WO2008113409A1

WO2008113409A1 - Electric lamp comprising a light bulb that can be displaced in relation to the lower part

Info

Publication number: WO2008113409A1
Application number: PCT/EP2007/052580
Authority: WO
Inventors: Harald Dellian
Original assignee: Osram Gesellschaft mit beschränkter Haftung
Priority date: 2007-03-19
Filing date: 2007-03-19
Publication date: 2008-09-25
Also published as: TW200903559A

Abstract

The invention relates to an electric lamp comprising a lower part (3) and a light bulb (2) that is connected to the lower part (3) and contains at least one light source (4) and the light bulb can be displaced in relation to the lower part (3). The invention also relates to a method for operating an electric lamp.

Description

description

ELECTRIC LAMP WITH RELATIVELY TO THE LOWER PART OF MOVABLE LAMP PISTON

Technical area

The invention relates to an electric lamp and a method for operating such an electric lamp.

State of the art

There are known electric lamps in the form of so-called retro-lamps, which have a Glühlam ^¬ pe as a light source and have the task of generating light. Such retro-lamps can also have a light-emitting diode as the light source. Due to the light-emitting diode technology also light colors or lighting effects can be generated. A change of light characteristics, light colors and light effects of conventional bulbs is only possible by the fact that the user influenced by switching sequences on the light switch, the corresponding light characteristics, light colors or lighting effects. Such influence on retroreflectors via the light switch is relatively complex and also limited to only a few states.

Presentation of the invention

It is an object of the present invention to provide an electric lamp and a method for operating such an electric lamp, with which or with which the influence of light properties is made more flexible and less expensive.

This object is achieved by an electric lamp having the features of claim 1, and a method having the features of claim 14.

An electric lamp according to the invention comprises a Un ^¬ terteil and connected to the lower part of the lamp bulb. In the lamp envelope a Lichtquel ^¬ le is arranged at least. The lamp bulb is movable relative to the lower part. As a result, the use and range of use of the lamp can be expanded more flexibly and significantly.

In particular, depending on the relative position of the lamp bulb relative to the lower part, specific operating conditions can be set with the lamp during operation. At least two different positions are provided, in which the lamp bulb can be arranged to the lower part. Each of these positions is associated with an individual operating condition of the lamp. In a particularly simple and efficient manner, this embodiment of the electric lamp thus makes it possible to change the light properties, light colors or light effects with little effort. For this purpose, only the ent ^¬ speaking position adjustment of the lamp envelope is required relative to the lower part. Such relative posi ^¬ tion setting can be carried out before the operation, but in particular during operation of the lamp. In particular, when the electric lamp is inserted into a socket and is supplied with mains voltage, during a subsequent operation of the Lamp flask are moved relative to the lower part and then depending on a specific other operating mode can be adjusted.

It is preferably provided that the lamp bulb is rotatable relative to the lower part about a longitudinal axis of the lamp. This particularly simple movement a new position of the bulb is relative to the base ^¬ provides intuitive and easy to understand can be and thereby also a new mode of operation will be more safety-set for ei ^¬ nen users.

The light source, which is in the lamp bulb at ^¬ arranged, adapted to generate light beams of at least two colors of light is preferred. Preferably, a light source is designed as a light emitting diode. Depending on the control can then be provided that this emits a light source depending on a specific control light beams of different light color.

It can also be provided that the lamp has at least two light sources, which are arranged in the lamp bulb.

The lower part has a socket or a housing and egg ^¬ nen base, which is connected to the housing. The lamp bulb is preferably movably connected to the housing. Preferably, the lamp bulb is at least partially arranged in the housing. This means that the lamp bulb has at the the base, in particular the housing of the lower part, facing end a through ^¬ diameter which is smaller than the diameter of this bottom portion, in particular the housing of the base. In this interlocking section of the lamellae pe surrounds the lower part completely circumferentially the lamp ^¬ piston.

Are preferred in the case of the lower part on the one hand and the lamp envelope on the other hand complementary filling elements are formed, through which the lamp bulb and the lower part in the direction of the longitudinal axis of the lamp are supported ^¬ th, yet a rotational movement about the longitudinal axis is feasible. This allows the position of the two components of the bulb and bottom in long axis direction are fixed and held and yet the relative mobility be rotationally guarantees ^¬ making about the longitudinal axis. As a result, the mechanical stability of the lamp can be ensured and yet a flexible and smooth movement of the components relative to one another is made possible.

In particular, it can be provided that a guide groove is formed on the lamp bulb, which engage in guide lugs in the lower part and thereby the holding together on the one hand and the rotation is ensured on the other hand.

Preferably, the mobility, in particular the Drehbe ^¬ movement, the lamp envelope is limited relative to the lower part by two end stops. In particular in Umlaufrich ^¬ tion about the longitudinal axis of the lamp mobility is thus limited by these end stops. As a result of this ^embodiment , the clarity in the setting of operating conditions can be increased and, moreover, the mechanical stability of the lamp can be improved.

In addition, this configuration can also better capture the setting by a user because it allows it to identify where, starting from the end stops, the respective specific relative positions can be achieved.

An elevation is preferably formed on the outside of the lamp bulb, which can be latched in the latching position of the lower part as a function of the movement of the lamp bulb. With this configuration, the defined setting of operating modes and thus also the defined setting of relative positions between the lamp bulb and the lower part can be significantly improved again. Even if, from the outside by a user, the survey on the lamp bulb and the detent positions in the lower part are not visible, very specific ei ^¬ ne specific position can be adjusted because it is perceived as a haptic feedback. The survey on the outside of the lamp envelope is provided in particular as a latching pin or latching lug.

Preferably, at least two separate and spaced apart electrical contacts are formed on the inside of the lower part, in particular ^¬ special in the housing of the lower part. Depending on the relative position of the lamp bulb, one of the electrical contacts can be contacted.

Is preferably between the electrical contacts on the lower part, which are arranged Benach in particular in the circumferential direction ^¬ discloses and spaced from each other, and He ^¬ surveys of the lamp bulb, a flexible electrically lei ^¬ tendes element, in particular a flexible strip, spaced from the electrical contacts arranged. Preference is given by the movement of the lamp bulb rela tive to the lower part ^¬ the electrically conductive element by the elevation of one of the electrical contacts kontak- tierbar and the associated electrical contact this contacted specific operating condition set.

Before switching on or during operation, the lighting characteristics of a lamp can be changed. The ^torque for rotating the piston relative to the lower part for selecting the light characteristic is smaller than the torque of the lamp socket. This means that when the electric lamp is screwed or plugged in its final state in a Lam ^¬ penfassung, by rotating the lamp bulb, the electric lamp can not be unscrewed from the lamp socket, so long one of the end stops between the lamp envelope and the lower part still is not reached.

If an electric lamp is used in such Lampenfas ^¬ sung, in particular screwed, it is initially provided by the torque input that the lamp bulb is moved relative to the lower part and only when reaching an end stop then the two compo ^¬ nents lamp bulb and lower part evenly the Lam ^¬ penfassung are screwed in to the final position. The even further turning of the bulb and the UN terteils is from reaching the end stop Runaway ^¬ leads. This end stop is reached when currency ^¬ the screwing of the electric lamp is achieved an equilibrium in the lamps ^¬ rend replaced by the rotary ^¬ moment for introducing the total electric lamp is equal to the torque in the lamp holder, with which the lamp bulb can be moved relative to the lower part.

Thus, both when inserting the electric lamp and when removing them into or out of the lamp socket, the lamp bulb is first rotated relative to the lower part up to an end stop and, after reaching this end stop, the entire electric lamp is moved further into the end position in the lamp socket or from this end position and thus also removed from the lamp socket.

Due to the preferred embodiment of a light source as a light emitting diode of the lamp bulb is almost not heated, so that it can be touched by a user during operation of the electric lamp. Thereby, also a rotation of the lamp vessel are made possible relative to the base during operation of the electric lamp at arbitrary times, and thereby also a change in the operating mode is brought about during the loading ^¬ drive. The relative position between the lamp bulb and the lower part is corresponding to a specifi ^¬'s contacting of the electrically conductive element with an electrical contact on the lower part, which can be detected by a control unit. The control unit can be arranged in the housing of the lower part.

The arranged on the inner wall or on the inside of the housing electrical contacts are preferably separated by radially oriented webs. The electrically conduct ^¬ de element is arranged on these webs and, in the state in which it is not acted upon by the elevation on the outer side of the lamp bulb with pressure or is pressed in the direction of an electrical contact, spaced from an electrical contact.

The relative positions between the lamp envelope and the base and thus the associated specific contacts of an electrical contact may be realized by a voltage divider. A control unit can evaluate these voltage signals. In particular, a pin of this control unit is sufficient in order to capture all switching positions ^¬ and evaluate.

It can also be provided that the electric lamp, guided by the cycle of the mains voltage, which is in particular about 50 Hz, permanently changes the color and a plurality of such electric lamps are synchronized in an illumination system and essentially simultaneously a color change of this kind imple ^¬ ren. may be individually a set of these lamps by turning of the lamp envelope relative to the base with a different mode and characterized examples of play perform oppositely directed as compared to the other lamps color change in a lighting system with a plurality of such lamps. In addition, a freewheeling mode for color change may also be provided. A generation of flashing light, a dimming or the like can also be provided. By turning the lamp bulb to another switch position, a user can select a lighting characteristic of the electric lamp without having to replace the light source or having to program it accordingly via light switches. In a method according to the invention for operating an electric lamp, with a lower part and a lamp piston which can be moved relative to the lower part, in which at least one light source is arranged, moving the lamp piston relative to the lower part sets a specific position between these two components and depending on the set position is set in the operation of the lamp one of the position associated with specific operating condition or mode of operation of the lamp.

Advantageous embodiments of the electric lamp according to the invention are to be regarded as advantageous embodiments of he ^¬ inventive method.

Brief description of the drawings

An embodiment of the invention will be explained in more detail with reference to schematic drawings. Show it:

Fig. 1 is a schematic side view of an embodiment ^¬ example of an electric lamp ^according to the invention;

FIG. 2 is a schematic representation of a partial section of the electric lamp according to FIG. 1; FIG.

Fig. 3 is a side view of the illustration of FIG. 2;

4 shows a circuit arrangement for operating the electric lamp according to FIG. 1. Preferred embodiment of the invention

In the figures, identical or functionally identical ^elements with the same reference numerals are provided.

In Fig. 1, a Eleekt ^¬ cal lamp 1 is shown in a schematic side view, which is designed as a so-called retrorem lamp. The lamp 1 comprises a lamp bulb 2, which is made of plastic. In addition, the lamp 1 comprises a lower part 3, which comprises a housing 31 and an adjoining base 32. The base 32 is formed in the embodiment as a screw base, whereby the electric lamp 1 can be screwed into a lamp holder, not shown, and can be supplied with mains voltage.

In the lamp envelope 2, a single light source 4 is arranged in the embodiment, which is formed as a light-emitting diode. The light source 4 can be controlled in the embodiment so that it emits light rays of different light color. However, it can also be provided that at least two light sources 4 are arranged in the lamp bulb 2.

The lamp bulb 2 is movable relative to the lower part 3. In the exemplary embodiment, the lamp bulb 2 is rotatable about the longitudinal axis A of the lamp 1 relative to the lower part 3 in ^¬ the directions. The interface is formed in the area 5. The lamp bulb 2 and the lower part 3 are mechanically connected to one another by guide elements, wherein it is provided in particular that one or more guide ^grooves 6 are formed on the lamp bulb 2, which engage in guide lugs 7 which are arranged on the lower part 3. This allows the position in Longitudinal axis A of the lamp bulb 2 and the lower part 3 are fixed. A falling apart or the like can be prevented. Nevertheless, the rotation about the axis A can be ensured by this configuration.

Depending on the relative position between the lamp bulb 2 and the lower part 3 specific operating ^¬ conditions of the lamp 1 can be adjusted. Each possible adjustable relative position of these two components to one another is then assigned a specific operating mode of the lamp 1. In particular, each possible relative adjustable position is assigned different operating conditions with regard to light properties, light colors or light effects of the lamp 1.

This mechanism will be explained in more detail below.

In Fig. 2 is a partial section of the illustration in Fig. 1 is shown, which shows a sectional view in a sectional plane perpendicular and horizontal to the plane of the figure in plan view. It can be seen that in the area 5 of the lamp bulb 2 in the direction of the longitudinal axis A (FIG. 1) is arranged overlapping with the housing 31 of the lower part 3. For this purpose, the lamp bulb 2 in the region 5 on the lower part 3 side facing a diameter which is smaller than the diameter of the housing 31. On an outer side 21 of the lamp bulb 2, a survey 8 is formed in this area 5, wel ^¬ che for example may be a locking pin or a locking lug.

On an inner side 31a of the housing 31, three electrical contacts 9, 10 and 11 are arranged, which are positioned at a distance from each other. The electrical contacts 9 to 11 are viewed in the longitudinal ^¬ direction of the axis A viewed at the same height ^¬ assigns.

Each adjacent and spaced from an electrical contact 9 to 11 webs 12, 13, 14 and 15 are ^{ausgebil ¬} det. These extend in the radial direction and have a length in the radial direction which is greater than that of the electrical contacts 9 to 11.

In addition, a elekt ^¬ driven conductive member 16 is disposed at the inner side 31a which is a flexible sheet strips in the exporting ^¬ approximately example. This extends from end points which are fixed directly on the inside 31a, via the webs 12 to 15. The length dimensioning of the webs 12 to 15 and the electric contacts 9 to 11, the elekt ^¬ driven conductive member 16 is in the unloaded condition spaced arranged to these electrical contacts 9 to 11.

In the exemplary embodiment shown, the lamp bulb 2 can be adjusted in three different relative positions to the lower part 3. These are characterized in that the three electrical contacts 9 to 11 are arranged spaced from one another in the ^{circumferential} direction ^¬ . Each of these three relative positions is assigned to a specific Be ^¬ triebsart. In Fig. 2 is an exemplary view is shown, in which a second relative position is set. This is given by the fact that the Erhe ^¬ bung adjacent in the circumferential direction 8 see the second electrical contact 10 is arranged. The survey 8 is in Radial direction dimensioned so that it presses the flexible electrically conductive element 16 in the direction of an electrical contact 9 to 11, in the embodiment shown in the direction of the electrical contact 10, and thus an electrical contact between the electrically conductive member 16 and the electrical contact 10th generated .

This closed contact can be detected by a control unit 20 (FIG. 4) and, depending on this, set the operating mode assigned to this relative position between the lamp bulb 2 and the lower part 3. The STEU ^¬ ereinheit 20 may be disposed in the housing 31st

Starting from the illustration in FIG. 2, a further adjustment of a mode by be made possible that, for example, the lamp bulb 2 is rotated clockwise relative to the lower part 3, whereby the ge ^¬ connected contact between the electrical conductive member 16 and the electrical contact 10 is opened and subsequently the contact between the electrically conductive element 16 and the electrical contact 9 is closed. This is then also detected by the control unit 20. Due to the arrangement and design of the webs 12 to 15, an individual set position between the lamp bulb 2 and the lower part 3 can be detected haptically moreover, since virtually each over-snapping over a web 12 to 15 is perceived. In addition, by means of this embodiment with the webs 12 to 15, a secure fixing of a set relative position between the lamp bulb 2 and the lower part 3 can be ensured. A uner ^¬ wünschtes displacement or rotation of the lamp bulb 2 can be prevented. As a result, a high reliability of the electric lamp 1 can be achieved.

Furthermore, it is provided that the lamp bulb 2 may be moved back and only within the segment between the end stops 17 and 18 ^¬ rotated back about the axis A. Beyond these end stops 17 and 18, further ^{rotation is} not possible. The torque for the selection of the luminous property and thus for the relative movement between the lamp bulb 2 and the lower part is formed smaller than the torque for unscrewing the e-lectric lamp 1 from a lamp holder. This can be prevented by inserting the electric lamp 1 in the lamp holder and a desired change of the mode by turning the lamp bulb 2, that then also the lamp 1 is rotated out of the socket ^¬ .

In Fig. 3 is a further schematic representation of a partial section is shown, wherein a side view of the inside 31 a of the housing 31 is shown. Both the webs 12 to 15 and in the circumferential direction at the same height cher ^¬ cher height spaced electrical contacts 9 to 11 are shown.

4, a simplified circuit diagram for an e-lectric lamp 1 is shown. The example shown

Light source 4 is connected to a driver unit 19, which in turn is connected to the control unit 20.

Specific values for the red, green, and blue color channels can be output to the driver unit 19 by the control unit 20, and then depending on that Light source 4 is driven accordingly. This read ^¬ all possible colors of the color chart sen set. The circuit diagram shows still further an analog input 21 and the portion 5 of the electric lamp 1, wherein this sliding contacts are illustrated and Un ^¬ terschied to the embodiment in FIGS. 2 and 3, four different electrical contacts are shown. Since ^¬ through can be adjusted to the lower part 3 and thus four different operating modes of the lamp 1 processin ^¬ ren four different relative positions of the bulb. 2

. As indicated in Figure 4, is by means of a voltage ^¬ divider depending on the relative position between the lamp bulb 2 and the lower part 3 and thus dependent (by the contacting of an electrical contact in Figure 4, four different contacts; in Fig. 2 and 3. produces three different ver ^¬ contacts 9 to 11) a respective clamping ^¬ voltage signal, which is detected by the control unit 20, in particular a microprocessor. This makes it possible that with only one pin of the control unit 20 all switching positions of the lamp 1 can be detected and evaluated.

Claims

claims

An electric lamp having a lower part (3) and a lamp bulb (2) connected to the lower part (3), in which at least one light source (4) is arranged and which is movable relative to the lower part (3).

2. An electric lamp according to claim 1, characterized in that at least two different positions between the lamp bulb (2) and the lower part (3) are adjustable and each position is associated with a specific operating mode of the lamp (1).

3. Electric lamp according to claim 1 or 2, characterized in that the lamp bulb (2) relative to the lower part (3) about a longitudinal axis (A) of the lamp (1) is rotatable.

4. Electric lamp according to one of the preceding claims, characterized in that the light source (4) for generating light beams is formed with at least two light colors.

5. Electric lamp according to one of the preceding claims, characterized in that the lamp (1) has at least two light sources (4) on ^¬ .

6. Electric lamp according to one of the preceding ^¬ claims, characterized in that the light source (4) is a light emitting diode.

7. An electric lamp as claimed in any one of the preceding ^¬ claims, characterized in that the lower part (3) comprises a housing (31) and a base (32) and the lamp bulb (2) movable in the housing is disposed (31) in regions.

8. An electric lamp according to claim 7, characterized in that in the housing (31) of the lower part (3) and the Lam ^¬ penkolben (2) guide elements (6, 7) are formed, through which the lamp envelope (2) and the Un ^¬ terteil (3) in the direction of the longitudinal axis (A) of the lamp (1) are held and a rotational movement about the longitudinal axis ^¬ (A) can be performed.

9. An electric lamp according to one of the preceding arrival claims, characterized in that the mobility, in particular the rotational movement, of the lamp envelope (2) relative to the lower part (3) by two end stops (17, 18) is limited.

10. An electric lamp as claimed in any one of the preceding ^¬ claims, characterized in that on the outer side (21) of the lamp bulb (2) an Er ^¬ elevation (8) is formed, which is latched depending on the movement of the lamp envelope (2) in locking positions of the lower part (3).

11. An electric lamp as claimed in any one of the preceding claims, characterized in that on the inside (31a) (of the lower part (3), and in ^¬ particular the housing (31) of the lower part (3), separate at least two and spaced apart to each other, electrical contacts 9, 10, 11), and depending on the position of the lamp bulb (2) one of the electrical contacts (9, 10, 11) can be contacted.

12. An electric lamp according to claim 10 or 11, characterized in that between the electrical contacts (9, 10, 11) on the lower part (3) and the survey (8) of Lampenenkol ^¬ bens (2) a flexible, electrically conductive element (16), in particular a strip, spaced from the electrical contacts (9, 10, 11) is arranged.

13. An electric lamp according to claim 12, characterized in that by the movement of the lamp bulb (2) relative to the lower part (3), the electrically conductive element (16) through the elevation (8) with one of the electrical contacts (9, 10, 11 ) is contactable and a spe ^¬ cific operating condition of the lamp (1) is adjustable.

14. A method for operating an electric lamp (1) having a lower part (3) and a relative to the lower part (3) movable lamp bulb (2) in which at least one light source (4) is arranged, in which by the movement of the lamp envelope ( 2) a specific position is set relative to the lower part (3) and, depending on the set position during operation of the lamp (1), a specific operating condition of the lamp (1) assigned to the position is set.