Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberWO2000009941 A1
Publication typeApplication
Application numberPCT/KR1998/000353
Publication date24 Feb 2000
Filing date5 Nov 1998
Priority date11 Aug 1998
Publication numberPCT/1998/353, PCT/KR/1998/000353, PCT/KR/1998/00353, PCT/KR/98/000353, PCT/KR/98/00353, PCT/KR1998/000353, PCT/KR1998/00353, PCT/KR1998000353, PCT/KR199800353, PCT/KR98/000353, PCT/KR98/00353, PCT/KR98000353, PCT/KR9800353, WO 0009941 A1, WO 0009941A1, WO 2000/009941 A1, WO 2000009941 A1, WO 2000009941A1, WO-A1-0009941, WO-A1-2000009941, WO0009941 A1, WO0009941A1, WO2000/009941A1, WO2000009941 A1, WO2000009941A1
InventorsSung Chang Yang
ApplicantSung Chang Yang
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Light reflector for a fluorescent lamp
WO 2000009941 A1
Abstract
The light reflector for a fluorescent lamp according to the present invention has a plurality of reflecting surfaces inclined concavely at variously predetermined angles for maximum reflection of light rays radiated from a fluorescent lamp, and has a pair of couplings assembled on both ends of the reflector so that the couplings may be fixedly positioned on the caps of the fluorescent bulb. The reflecting light by the light reflector of this invention can radiate to the desired direction by adjusting the installed angle of the light reflector. The light reflector has a good appearance by positioning a pair of couplings assembled on both ends of the light reflector on the caps of the fluorescent bulb.
Claims  (OCR text may contain errors)
What is claimed is:
1. A light reflector for use in a lighting fixture having a fluorescent bulb, which comprises: a body reflector forming symmetrically in a longitudinal direction with a plurality of reflecting surfaces, which is inclined concavely at variously predetermined angles for maximum reflection of the light rays radiated from a fluorescent lamp; and a pair of couplings assembled on both ends of the body reflector wherein the couplings are fixedly positioned on the caps of the fluorescent bulb.
2. The light reflector as defined in claim 1 wherein said plurality of reflecting surfaces comprise a pair of reflecting central surfaces 15 and 15', a pair of first reflecting surfaces 14 and 14', a pair of second reflecting surfaces 13 and 13', and a pair of third reflecting surfaces 12 and 12'.
3. The light reflector as defined in claim 1 wherein said plurality of reflecting surfaces further comprise a pair of edge surfaces 11 and 11 '.
4. The light reflector as defined in claim 3 wherein said plurality of reflecting surfaces have angles of about 207┬░ between the reflecting central surface 15 and the reflecting central surface 15', about 138┬░ between the reflecting central surface 15 and the first reflecting surface 14, about 174┬░ between the first reflecting surface 14 and the second reflecting surface 13, about 171┬░ between the second reflecting surface 13 and the third reflecting surface 12, and about 255┬░ between the third reflecting surface 12 and the edge surface 11.
5. The light reflector as defined in claim 4 wherein said plurality of reflecting surfaces have widths of about 9 mm for reflecting central surfaces 15 and 15', of about 15 mm for first reflecting surfaces 14 and 14', of about 13 mm for second reflecting surfaces 13 and 13', of about 10 mm for third reflecting surfaces 12 and 12', and of about 3 mm for edge surfaces 11 and 11 '.
Description  (OCR text may contain errors)

Light Reflector for a Fluorescent Lamp

Field of the Invention The present invention relates to a light reflector which is installed behind a fluorescent lamp. More specifically, the present invention relates to a light reflector which is simply installed between the housing panel of a lighting fixture and the fluorescent bulb that has been installed with the lighting fixture. The light reflector has a plurality of reflecting surfaces inclined concavely at variously predetermined angles for maximum reflection of light rays radiated from a fluorescent lamp, and has a pair of couplings assembled on both ends of the reflector so that the couplings may be fixedly positioned on the caps of the fluorescent bulb.

Background of the Invention

Fluorescent lamps are extensively used for lighting work areas in offices, factories, underground facilities and residences.

Fluorescent lamps of approximately 60 cm and 120 cm in length are world-widely used currently. A fluorescent lamp of approximately 60 cm in length usually has a capacity of 20 W. A fluorescent lamp of approximately 120 cm in length has a capacity of 32 W or 40 W. Of course, longer fluorescent lamps having higher capacities are used for certain purposes. The conventional lighting fixture for accommodating a fluorescent bulb has a housing panel over the fluorescent bulb. The housing panel of the conventional lighting fixture functions somewhat reflecting the light rays radiated from the fluorescent bulb.

The conventional housing panel is flat or has three surfaces folded concavely along two parallel lines. Such conventional housing panel only reflects a small amount of light rays radiated from the fluorescent bulb, which is not effective to enhance illumination of the light rays by reflection.

Further, in case of the lighting fixture equipped with two fluorescent bulbs, one fluorescent bulb is turned on and the other off in certain areas such as underground facilities, subway stations, factories, etc. in order to save electric energy. In these areas, the illumination is decreased in half to cause inconvenience.

US Patent No. 5,062,030 discloses a light reflector having a plurality of angled planar light reflecting surfaces disposed behind and symmetrically of the light source and includes a central reflecting surface. The US patent discloses a light reflector for use in a lighting fixture with an elongated light source, which comprises a substantially concave light reflecting element disposed in a coaxial parallel longitudinal fashion along a light source, said element having central light reflecting section and a pair of wing sections oppositely positioned parallelly on said central section. However, the structure of the reflecting surfaces is complicated and it causes a high manufacturing cost. Also, the US patent does not disclose a light reflector for installing one fluorescent bulb. According to the drawings of the US patent, it is believed that two light reflectors are jointed each other along the adjacent edges, and that the other edges of the reflectors are bonded to the lighting fixture.

Accordingly, the present inventor has developed a light reflector for each fluorescent bulb in a lighting fixture, which is capable of enhancing illumination of the light rays radiated from the fluorescent bulb, which is easily assembled to a conventional lighting fixture, and which is capable of varying the reflecting direction of the light rays.

Objects of the Invention An object of the present invention is to provide a light reflector for a fluorescent lamp which enhances as much as almost twice the illumination of the light rays radiated from the fluorescent lamp.

Another object of the present invention is to provide a light reflector for a fluorescent lamp so as to save electric energy by turning on one fluorescent bulb and turning off the other in case of the lighting fixture equipped with two fluorescent bulbs.

A further object of the present invention is to provide a light reflector which is easily installed over a conventional fluorescent lamp of a lighting fixture without taking apart the lighting fixture.

A further object of the present invention is to provide a light reflector which can radiate the reflecting light to the desired direction by adjusting the installed angle of the light reflector. A further object of the present invention is to provide a light reflector which has a good appearance by positioning a pair of couplings assembled on both ends of the light reflector on the caps of the fluorescent bulb.

A further object of the present invention is to provide a light reflector for a fluorescent lamp, in which a pair of couplings are easily and fixedly assembled to both ends of the light reflector.

Other objects and advantages of this invention will be apparent from the ensuing disclosure and appended claims.

Summary of the Invention

The light reflector for a fluorescent lamp according to the present invention has a plurality of reflecting surfaces inclined concavely at variously predetermined angles for maximum reflection of light lays radiated from a fluorescent lamp, and has a pair of couplings assembled on both ends of the reflector so that the couplings may be fixedly positioned on the caps of the fluorescent bulb.

In an embodiment of this invention, the angles of the light reflector are about 207 between a reflecting central surface 15 and a reflecting central surface 15', about 138 between a reflecting central surface 15 and a first reflecting surface 14, about 174 between a first reflecting surface 14 and a second reflecting surface 13, about 171 between a second reflecting surface 13 and a third reflecting surface 12, and about 255 between a third reflecting surface 12 and an edge surface 11. The same angles are formed between reflecting surfaces 12', 13', 14' and 15' and an edge surface 11 ', which are symmetric to the reflecting surfaces 12, 13, 14 and 15 and the edge surface 11.

In an embodiment of this invention, the widths of the reflecting surfaces are about 9 mm for reflecting central surfaces 15 and 15', about 15 mm for first reflecting surfaces 14 and 14', about 13 mm for second reflecting surfaces 13 and 13', about 10 mm for third reflecting surfaces 12 and 12', and about 3 mm for edge surfaces 11 and 11 '.

The reflecting light by the light reflector of this invention can radiate to the desired direction by adjusting the installed angle of the light reflector. The light reflector has a good appearance by positioning a pair of couplings assembled on both ends of the light reflector on the caps of the fluorescent bulb. The reflecting surface of the light reflector is made of aluminium in order to maximize an effect of reflection of the light rays radiated from the fluorescent bulb.

Brief Description of the Drawings

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, and wherein:

Fig. 1 is a perspective view of a light reflector for a fluorescent lamp in accordance with the present invention, which consists of a body reflector 1 and a pair of couplings 2;

Fig. 2 is a side plane view of the body reflector shown in Fig. 1; Fig. 3 is an exploded perspective view of the body reflector and the coupling;

Fig. 4 is a cross-sectional view illustrating that the coupling has been assembled to the body reflector;

Fig. 5 is a perspective view illustrating another embodiment of the coupling which is assembled to the body reflector;

Fig. 6 is a perspective view illustrating that a light reflector according to the present invention is installed over a fluorescent bulb; and Fig. 7 is a side plane view illustrating the reflecting direction of light rays in accordance with the change of angle of a light reflector.

Detailed Description of the Invention

The present invention relates to a light reflector which is simply installed between the housing panel of a lighting fixture and the fluorescent bulb that has been installed with the lighting fixture.

Fig. 1 is a perspective view of a light reflector for a fluorescent lamp in accordance with the present invention, which consists of a body reflector 1 and a pair of couplings 2. The body reflector has a plurality of reflecting surfaces 12, 12', 13, 13', 14, 14', 15 and 15' inclined concavely at variously predetermined angles for maximum reflection of the light lays radiated from a fluorescent lamp. A light reflector for a fluorescent lamp according to the present invention has a symmetrical structure in a longitudinal direction along a fluorescent lamp. A pair of couplings 2 are assembled on both ends of the body reflector so that the couplings may fixedly positioned on the caps of the fluorescent bulb.

In order to maximize reflection of the light rays radiated from the fluorescent bulb and to reduce the manufacturing cost, the body reflector 1 according to the present invention is symmetrically and concavely formed with reflecting central surfaces 15 and 15', first reflecting surfaces 14 and 14', second reflecting surfaces 13 and 13', and third reflecting surfaces 12 and 12'.

Fig. 2 is a side plane view of the body reflector shown in Fig. 1. In an embodiment of this invention, the angles of the body reflector are about 207 between a reflecting central surface 15 and a reflecting central surface 15', about 138 between a reflecting central surface 15 and a first reflecting surface 14, about 174 between a first reflecting surface 14 and a second reflecting surface 13, about 171 between a second reflecting surface 13 and a third reflecting surface 12, and about 255 between a third reflecting surface 12 and an edge surface 11. The same angles are formed between reflecting surfaces 12', 13', 14' and 15' and an edge surface 11 ', which are symmetric to the reflecting surfaces 12, 13, 14 and 15 and the edge surface 11.

In an embodiment of this invention, the widths of the reflecting surfaces are about 9 mm for reflecting central surfaces 15 and 15', about 15 mm for first reflecting surfaces 14 and 14', about 13 mm for second reflecting surfaces 13 and 13', about 10 mm for third reflecting surfaces 12 and 12', and about 3 mm for edge surfaces 11 and 11 '. Fig. 3 is an exploded perspective view of the body reflector and the coupling. A pair of couplings 2 are assembled on both ends of the body reflector 1 so that the couplings may fixedly positioned on the caps of the fluorescent bulb. A flat edge 3 is formed on each central end of the body reflector to assemble with the coupling. A pair of convexo-concave grooves 24 are formed on the flat edge to receive fixedly the coupling. Fig. 4 is a cross-sectional view illustrating that the coupling has been assembled to the body reflector. The coupling has an upper clip 21 and a lower clip 22 to receive the body reflector 1. A pair of convexo-concave grooves 23 are formed on the upper clip, and a pair of holes 25 are formed on the lower clip. This coupling can be easily understood by an ordinary skilled person in the art to which the invention pertains. Fig. 5 is a perspective view illustrating another embodiment of the coupling which is assembled to the body reflector; Fig. 6 is a perspective view illustrating that a light reflector according to the present invention is installed over a fluorescent bulb 100. The light reflector is simply installed between the housing panel of a lighting fixture and the fluorescent bulb that has been installed with the lighting fixture. The fluorescent bulb is formed with a pair of caps 4 on both ends of the bulb, which is usually made of aluminum and is insulated from electricity. When the light reflector according to the present invention is installed behind a fluorescent bulb, it shows a good appearance by positioning the couplings assembled to the body reflector on the caps of the fluorescent bulb. The coupling may be made of polymer resin material and metal having elasticity, which is easily carried out by an ordinary skilled person in the art to which the invention pertains.

The light reflector of this invention is easily installed over a conventional fluorescent lamp of a lighting fixture without taking apart the lighting fixture. The couplings are exactly to be fitted to the aluminium caps 4 of the fluorescent bulb. The outer diameter of an aluminium cap of a fluorescent lamp is varied according to the length and capacity thereof. The outer diameters of conventional fluorescent bulbs are 24 mm, 26 mm, and 30 mm. Accordingly, the size of a coupling ring 2 is prepared to be fitted to the each outer diameter of the aluminium cap, and it is easily performed by those skilled in the art.

Fig. 7 is a side plane view illustrating the reflecting direction of light rays in accordance with the change of angle of a light reflector. The light reflector of the present invention can radiate the reflecting light rays to the desired direction by adjusting the installed angle of the light reflector. Fig. 7 shows that the reflecting light rays radiate to three different directions by simply changing the angle of the light reflector. Fig. 11(A) illustrates that a light is reflected to the squarely downward direction by squarely mounting a light reflector to the rear of a fluorescent lamp 100. Fig. 1KB) illustrates that a light is reflected to the right direction by shifting to the left in mounting a light reflector to the rear of a fluorescent lamp 100. Fig. 11(C) illustrates that a light is reflected to the left direction by shifting to the right in mounting a light reflector to the rear of a fluorescent lamp 100.

The body reflector 1 is made of a material which is capable of reflecting the light rays radiated from a fluorescent bulb. Aluminium panel is used for the present invention. It is preferable that the thickness of aluminium panel is 0.5 mm. Such an aluminium panel is purchased from ALANOD Aluminium Veredlung GmbH & Co. (trademark: MIRO 1 ~9) in Germany.

The present invention can be easily carried out by an ordinary skilled person in the art. Many modifications and changes may be deemed to be with the scope of the present invention as defined in the following claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
DE3507143A1 *28 Feb 19853 Oct 1985Fusion Systems CorpLampe zur abgabe eines relativ gleichmaessigen lichtstroms
DE3725106A1 *29 Jul 19877 Apr 1988Schuch Lichttech Kg AdolfLeuchte
US4499529 *24 Aug 198312 Feb 1985Figueroa Luisito ALight reflector
US4514793 *13 Dec 198130 Apr 1985Knud AndreasenReflector system for securing to a light source
US4719546 *21 May 198612 Jan 1988Spitz Russell WFluorescent lighting apparatus
US5062030 *10 Dec 199029 Oct 1991Figueroa Luisito ACustomized light reflector
US5192129 *6 Sep 19919 Mar 1993Figueroa Luisito ACustomized light reflector
Classifications
International ClassificationF21V7/00, F21V17/04, F21V7/09
Cooperative ClassificationF21Y2103/00, F21V7/005, F21V7/09, F21V17/04
European ClassificationF21V17/04, F21V7/00E, F21V7/09
Legal Events
DateCodeEventDescription
24 Feb 2000AKDesignated states
Kind code of ref document: A1
Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW
24 Feb 2000ALDesignated countries for regional patents
Kind code of ref document: A1
Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG
19 Apr 2000121Ep: the epo has been informed by wipo that ep was designated in this application
14 Dec 2000REGReference to national code
Ref country code: DE
Ref legal event code: 8642
17 Jan 2001122Ep: pct application non-entry in european phase
11 Apr 2001NENPNon-entry into the national phase in:
Ref country code: CA