JP2002343102A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at reduction of a manufacturing cost of a lighting fixture, while preventing danger by a broken light source lamp in lightweight. SOLUTION: A reflector 20 is produced by forming a main part 21 of the reflector, which has a shape of an approximate hemisphere, of heat-resistant resin, such as polyetherimide resin(PEI), polyimide resin(PI), or the like, and by forming a reflective film 24 in the inside of the main part 21 of the reflector. Moreover, by producing a protector 30 of a resin film, such as polyethyleneterephthalate resin(PET), fluoride system resin, or the like, being integrated in one with the above reflector 20, at the front of the light source lamp 10 and the opening of the above reflector 20, the lighting fixture, in which a space 40, which covers the light source lamp 10, is formed between a protector 30 and the reflector 20, is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lighting fixture.
More specifically, the present invention relates to a lighting device provided with a protector for preventing a broken lamp piece from scattering when a light source lamp is damaged.

[0002]

2. Description of the Related Art In recent years, various measures have been taken to prevent broken lamp pieces from scattering when a light source lamp is damaged. For example, a lamp with an anti-scattering coating film is provided in which a coating film having an anti-scattering property is applied to the surface of a spherical lamp body and fired. In the lamp, since it is necessary to apply a coating film on the surface of the lamp body in a later process, the cost increases. In some cases, a fluorine film is applied to improve durability. In this case, the thickness of the coating film must be increased, and the lamp surface becomes whitish. On the other hand, in order to improve the transparency, it is necessary to apply a urethane resin film, but this has a problem that the durability is poor.

Also, in a multi-halogen lamp in which a metal halide is sealed inside the lamp body, the surface of the lamp body is coated with a Teflon film. However, in consideration of heat resistance, it is applied only to a halogen lamp of about 400 W. could not. In this case, if a highly efficient reflecting mirror (increased reflection processing) is used, the temperature of the lamp rises,
In some cases, this method cannot be applied to lamps of 400 W or less.

[0004] Further, a fluorescent lamp with a shatterproof coating film is also provided. In this fluorescent lamp, a polyester film is applied to the outer surface of a bulb body constituting a fluorescent lamp by applying heat from the outside. The film is inferior in durability, particularly heat resistance, and cannot be applied as it is to lamps such as so-called incandescent lamps because of its shape. Further, there is a problem that it is necessary to adhere the film to the valve body without wrinkling, which increases the production cost.

On the other hand, for example, as shown in FIGS. 4 and 5, the light source lamp 10 itself does not have a scattering prevention function, but an illumination provided with a scattering-preventing front protector 110 in front of the opening of a hemispherical reflecting mirror 100. An instrument is provided. However, in these lighting fixtures, the reflector 100
Not only is the weight of the front protector 110 itself heavy,
If the lighting equipment falls, the danger increases. In addition, because of the weight, the holding mechanism of the lighting fixture becomes large, and it is difficult to mount the lighting fixture. In addition, since the reflecting mirror 100 and the front protector 110 are configured separately, a dedicated fixing bracket 120 is required as shown in FIG. 4, for example, or the opening edge 101 of the reflecting mirror 100 is bent as shown in FIG. Then, it is necessary to attach the front protector 110, and the manufacturing cost is relatively high.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has been made to reduce the weight of a lighting fixture which prevents the risk of damage to a light source lamp and to reduce the weight of the lighting fixture. The purpose is to reduce manufacturing costs.

[0007]

A lighting device according to the present invention is provided with a light source lamp, a reflecting mirror for reflecting light emitted from the light source lamp, and a light source provided in front of the light source lamp.
And a protector that forms a space that covers the light source lamp between the reflector and the reflector.The reflector has a reflector surface formed on a base material made of a resin film, and the protector includes a light source. It is characterized by being formed from a resin film having transparency.

In the lighting device, for example, the protector can be joined to a mounting piece provided on the periphery of the opening of the reflecting mirror.

The protector may be provided in a substantially cylindrical shape that covers the light source lamp from the periphery of the socket opening at the bottom of the reflector.

As described above, in the present invention, it is preferable that the protector is formed integrally with the reflecting mirror.

At this time, it is preferable that the protector is made of a fluororesin film, and the reflecting mirror is made of a polyimide film.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic sectional view of a lighting device according to an embodiment of the present invention. The lighting device includes a light source lamp 10 such as an incandescent lamp or a halogen lamp, a reflecting mirror 20 that reflects light emitted from the light source lamp 10, and a protector 30 that covers a front opening of the reflecting mirror 20.

The reflecting mirror 20 includes a reflecting mirror main body 21 having a substantially semi-spherical shape and a mounting piece 22 provided on the periphery of an opening of the reflecting mirror main body 21. It is integrally molded from a resin film. A socket opening 23 for mounting the light source lamp 10 is provided at the bottom of the reflecting mirror 20, and a socket portion 25 projects outward from the socket opening 23. The light source lamp 10 is attached to the socket 25. Further, a reflection film 24 is formed on the inner surface of the reflecting mirror main body 21 to be the reflecting mirror main body 21.

An acrylic resin (PMMA), a polycarbonate resin (PC), a polyethylene terephthalate resin (PE)
T), polyethylene naphthalate resin (PEN), polyetherimide resin (PEI), polysulfone resin (P
SF), polyether sulfone resin (PES), polyether ether ketone resin (PEEK), polyphenylene sulfide resin (PPS), polyimide resin (P
Each resin such as I) is used. Among them, especially when heat resistance of 150 ° C. or more is required, polyethylene naphthalate resin (PEN), polyetherimide resin (PEI), polysulfone resin (PSF), polyether sulfone resin (PES), It is preferable to use a heat-resistant resin such as polyether ether ketone resin (PEEK), polyphenylene sulfide resin (PPS), and polyimide resin (PI). The reflecting mirror 20 is formed into a predetermined shape by using a molding method such as press molding or vacuum molding using these resins, and the reflecting mirror main body 21 is obtained.

On the inner surface of the reflecting mirror body 21, a reflecting film 24 having a mirror surface is formed. The reflection film 24 is made of, for example, a metal film such as aluminum, silver, or chromium, a low refractive index material such as silica oxide (SiO ₂ ) or magnesium fluoride (MgF ₂ ), titanium oxide (TiO ₂ ), tantalum oxide ( It is composed of an optical multilayer film or the like in which high refractive materials such as Ta ₂ O ₅ ) are alternately formed. The reflective film 24 is not particularly limited as long as it can be formed on the base material, and a vacuum evaporation method, an ion plating method, a sputtering method, or the like is generally used.

Further, in order to secure the adhesion to the reflector body 21 and the surface smoothness and to protect the quality of the reflector 20, a base coat (undercoating) or a protective film (top coating) may be provided as necessary. It may be formed. Of course, when there is no problem in quality, it is not necessary to apply these undercoatings or topcoatings.

Further, when a white surface is required for the reflective film 24, a melamine or acrylic white paint containing a white pigment such as titanium oxide may be baked after the application.

A protector 30 is provided in front of the opening of the reflecting mirror 20 manufactured as described above, that is, in front of the light source. The protector 30 is provided so that a broken piece of the damaged light source lamp 10 is not scattered. The protector 30 and the reflecting mirror 20 form a space 40 that covers the light source lamp 10. As a result, the light source lamp 10
In the case where is damaged, the broken pieces can be prevented from scattering outside.

In the present invention, the protector 30 is made of a light-transmitting resin film. The resin must have light transmissivity,
For example, the above PMMA resin, PC resin, PET resin, P
EN resin, silicon-based resin, fluorine-based resin, rubber, and the like are used. Further, among these resins, it is preferable to use a fluorine-based resin having excellent heat resistance and durability (weather resistance). In addition, these resins are generally colorless and transparent, but colored resins can also be used to impart color rendering properties. When coloring, for example, PEI resin, PES resin, PSF resin, P
I resin is preferred, and PI resin is particularly preferably used when heat resistance and light resistance are desired.

The protector 30 has, for example, an adhesive 3 attached to the mounting piece 22 of the reflector 20 as shown in FIG.
1 or by heat fusion. Or,
It can also be integrally molded by press molding or vacuum molding.

As described above, according to the lighting apparatus of the present invention, since both the reflecting mirror 20 and the protector 30 are made of a resin film, the weight of the entire lighting apparatus can be significantly reduced. As a result, the mounting of the lighting fixture can be performed with a simple structure. In addition, since both are made of a resin film, they can be easily formed integrally, or can be easily integrated by a method such as heat fusion or adhesion without using a fixing member, and the manufacturing cost can be reduced.

FIG. 2 is a schematic sectional view of a lighting apparatus according to another embodiment of the present invention. In the lighting device, the protector 30 is formed in a substantially cylindrical shape, and is provided inside the reflecting mirror 20 so as to cover the light source lamp 10. More specifically, the lower opening 32 of the protector 30 is formed to have substantially the same size as or larger than the socket opening 23, and the protector 30 is provided on the reflecting mirror 20 so as to substantially coincide with the socket opening 23. I have. The protector 30 is formed integrally with the reflecting mirror main body 21.
Is provided with a reflective film 24 on the inner surface thereof. As a result, the space 40 is formed by the reflecting mirror 20 and the protector 30, and the broken pieces of the light source lamp 10 are prevented from scattering outside. The object of the present invention can be achieved also by such a configuration.

FIG. 3 is a schematic perspective view of a lighting apparatus according to another embodiment of the present invention. In the lighting fixture, a cylindrical fluorescent lamp is used for the light source lamp 10 instead of the spherical light source lamp 10. In the lighting fixture, the reflecting mirror 20 is formed along the light source lamp 10 to have a substantially mountain-shaped cross section. Protector 30
Is bonded to a mounting piece 22 provided on the periphery of the opening of the reflecting mirror 20 with an adhesive (not shown) or the like. As described above, the present invention can be applied not only to the light source lamp 10 having a spherical shape but also to a light source lamp 10 having a tubular shape such as a fluorescent lamp.

[0024]

Next, the present invention will be described in more detail based on a lighting fixture according to an embodiment of the present invention. (Example 1) A 2 mm thick silicone rubber was used for the protector 30, and a 125 µm thick polyether sulfone film (trade name "Sumilite FS-
1300 "manufactured by Sumitomo Bakelite Co., Ltd.). By pressing, a reflector body having the shape shown in FIG. 1 is formed,
An optical multilayer film subjected to dichroic treatment was formed on the inner surface of the reflector body. Thereafter, the protector was bonded to the mounting piece around the opening of the reflector by press molding using an adhesive. A mini halogen lamp was attached to the light source lamp.

(Example 2) A 2 mm thick polycarbonate sheet (trade name "PANLITE MR sheet")
PC-7189 "manufactured by Teijin Chemicals Limited, and a 250 μm-thick polyetherimide film (trade name" Sumilite FS-1400 "manufactured by Sumitomo Bakelite Co., Ltd.) was used for the reflector body. The reflector main body having the shape shown in FIG. 1 was formed by press molding, and a dichroic-processed optical multilayer film was formed on the inner surface of the reflector main body. Thereafter, the protector was thermally bonded to the mounting piece around the opening of the reflector by press molding. A mini halogen lamp was attached to the light source lamp.

Example 3 A 125 μm-thick polyimide film (trade name “Kapton SKJ” manufactured by Toray DuPont) was used for the protector and the reflector body. The reflector and the protector were integrally formed into the shape shown in FIG. 2 by vacuum forming, and an optical multilayer film subjected to dichroic treatment was formed on the inner surface of the reflector body. A mini halogen lamp was attached to the light source lamp.

Example 4 A 100 μm-thick fluorine film (trade name “PFA TOYOFLON 100P”) was used for the protector.
Toray Co., Ltd.)
m thick polyimide film (trade name "Yurex R
N "manufactured by Ube Industries, Ltd.). By press molding,
A reflector main body having the shape shown in FIG. 1 was molded, and an optical multilayer film subjected to dichroic treatment was formed on the inner surface of the reflector main body. Thereafter, the protector was thermally bonded to the mounting piece around the opening of the reflector by press molding. A mini halogen lamp was attached to the light source lamp.

Example 5 A 100 μm-thick fluorine film (trade name “PFA TOYOFLON 100P”) was used for the protector.
Toray Co., Ltd.)
m thick polyimide film (trade name “Kapton SKJ”
(Manufactured by Toray Industries, Inc.). A reflector body having the shape shown in FIG. 1 was formed by vacuum forming, and a reflective film (top coat: VT6556L) made of aluminum was formed on the inner surface of the reflector body by vapor deposition (baking at 200 ° C. for 15 minutes). Thereafter, the protector was thermally bonded to the mounting piece around the opening of the reflector by press molding. A mini halogen lamp was attached to the light source lamp.

(Embodiment 6) A 50 μm thick P
An ET film (trade name “Lumirror Transparent T60” manufactured by Toray Industries, Inc.) was used, and a 250 μm-thick polyetherimide film (trade name “Superior UT-
F] An inorganic coating (IS92, manufactured by Matsushita Electric Works, Ltd.) is previously formed on a reflective film (aluminum deposition / top coat) on a Mitsubishi Plastics Co., Ltd., and the reflector and protector having the shape shown in FIG. The protector was thermally bonded to the reflector.

(Comparative Example 1) A glass (borosilicate or soda lime) plate having a thickness of 1 to 5 mm was used for both the protector and the reflector body, and the protector and the reflector body were formed by press molding into the shape shown in FIG. Then, the protector was attached to the reflector with a special fixing bracket. Further, an optical multilayer film subjected to dichroic processing was formed on the reflection film.

(Comparative Example 2) The protector had a thickness of 4 mm.
And a reflective glass body ("A1070" manufactured by Showa Aluminum Co., Ltd.) was used for the reflecting mirror body. The reflecting mirror body was formed by spinning into the shape shown in Fig. 1 and then a reflecting film (aluminum deposition / top coat with an inorganic coating (IS92, manufactured by Matsushita Electric Works, Ltd.)) was used. As shown in FIG. 5, the mounting piece of the reflecting mirror main body was bent and mounted.

(Comparative Example 3) A reflector having the shape shown in FIG. 3 was prepared from a steel plate which had been painted white (paint: Nippon Steel Co., Ltd., view coat type I), and a fluorescent lamp having a shatterproof film attached to the surface was used. It was attached to the reflector.

[Evaluation Test] The following evaluation tests were performed on the lighting fixtures of the above Examples and Comparative Examples. Measurement of Weight The weight of only the protector and the reflector was measured. Evaluation of scattering prevention performance The broken piece of the lamp body was put into the space formed by the reflector and the protector, and was shaken up and down about 30 times to visually confirm that there was no scattering to the outside. Manufacturing cost “○” indicates that the lamp can be manufactured at the same cost as a normal lamp, and “△” indicates that the lamp can be manufactured at a cost less than 1.5 times the normal lamp. When it could be manufactured at a cost five times or more, it was evaluated as "x".

[Evaluation Results] The results are shown in Tables 1 to 3 below. As can be seen from each table, in the lighting fixture of the present invention, except for the fluorescent lamp type lighting fixture, the weight is about 1/10 or less as compared with the lighting fixture of the comparative example. did it. Also, the scattering prevention performance was comparable to the lighting fixture of the comparative example. Further, in the case of a fluorescent lamp-type lighting device, it was possible to reduce the manufacturing cost slightly as compared with the comparative example.

[0035]

[Table 1]

[0036]

[Table 2]

[0037]

[Table 3]

[0038]

According to the lighting apparatus of the present invention, since the reflecting mirror and the protector for forming the space covering the light source lamp between the reflecting mirror and the reflecting mirror are made of a resin film,
The weight of the lighting fixture itself can be reduced. In particular, since both the reflecting mirror and the protector are made of a resin film, both can be integrally formed, eliminating the need for mounting parts and simplifying the manufacturing method. Therefore, the manufacturing cost can be reduced.

As described above, a highly safe lighting device that prevents scattering when the light source lamp is broken can be provided at a low weight and at a low cost. Further, since the lighting equipment itself can be easily attached, it is expected that the lighting equipment will be widely used.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a lighting device according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a lighting device according to another embodiment of the present invention.

FIG. 3 is a schematic perspective view of a luminaire according to still another embodiment of the above.

FIG. 4 is a schematic cross-sectional view of a lighting device as a conventional example.

FIG. 5 is a schematic sectional view of another conventional example of a lighting fixture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Light source lamp 20 Reflector 21 Reflector main body 22 Mounting piece 23 Socket opening 24 Reflective film 30 Protector 40 Space covering light source lamp

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F21V 15/00 F21M 1/00 J // F21Y 101: 00 7/00 G

Claims (6)

[Claims] 1. A light source lamp, a reflector for reflecting light emitted from the light source lamp, and a protector provided in front of the light source lamp and forming a space between the reflector and the reflector to cover the light source lamp. In the lighting apparatus, the reflecting mirror has a reflecting mirror surface formed on a base material made of a resin film, and the protector is formed from a resin film having a light transmitting property. . 2. The lighting apparatus according to claim 1, wherein the protector is joined to a mounting piece provided around an opening of the reflecting mirror. 3. The lighting apparatus according to claim 1, wherein the protector is provided in a substantially cylindrical shape covering the light source lamp from a peripheral edge of a socket opening at a bottom of the reflector. 4. The lighting apparatus according to claim 1, wherein the protector is formed integrally with the reflector. 5. The lighting fixture according to claim 1, wherein the resin film forming the protector is a fluororesin film. 6. The resin film forming the reflecting mirror,
The polyimide film according to claim 1,
The lighting fixture according to any one of 2, 3, 4, and 5.