JP2583320Y2 - Incandescent light bulb with mirror - Google Patents

Description

[Detailed description of the invention]

[0001] The present invention relates to an incandescent lamp with a mirror used for general lighting such as store lighting.

[0002]

2. Description of the Related Art Incandescent lamps, such as halogen incandescent lamps,
Although it is widely used for various purposes in general lighting, incandescent lamps with a mirror integrated with a mirror are often used in order to increase lighting efficiency and further illuminate in a specific direction. In this incandescent lamp with a mirror, the base of the incandescent lamp is inserted into an internal hole of a cylindrical neck provided at the top of a bowl-shaped concave mirror, and is fixed with an adhesive or a reflecting plate having a spring property. . When such an incandescent light bulb with a mirror is used for illuminating a product in a store, etc., when infrared light radiated from the incandescent light is reflected on the concave mirror to irradiate the product, the temperature of the product rises, so that the infrared light passes through the reflecting surface. Further, a cold mirror type concave mirror having a multilayer reflective film for reflecting visible light is used.

[0003] A halogen incandescent lamp with a mirror has a high luminance and can provide three-dimensional illumination with a clear shadow. However, the light emitted directly from the incandescent lamp without being reflected by the mirror is very dazzling. is there. For this reason, a cap is arranged in front of the incandescent lamp to block the direct light, or a hood is attached to the front opening of the mirror so that the direct light is reflected by the hood.

On the other hand, an incandescent light bulb emits a small amount of ultraviolet light, the amount of which is much smaller than that of an ultraviolet lamp such as a mercury discharge lamp, and is absorbed or transmitted by a multilayer reflective film. , Very small. However, when the product to be illuminated is, for example, clothing or the like, even a minute amount of ultraviolet rays has an adverse effect.
For this reason, the front opening of the mirror may be covered with a windshield absorbing ultraviolet rays. Also, even if the incandescent lamp is damaged due to any abnormal cause, if the front opening of the mirror is covered with a windshield, the fragments do not scatter outside and the safety is improved.

[0005]

The windshield is bonded to the front opening of the mirror with an organic adhesive such as a silicon-based adhesive, but the adhesive is deteriorated by the influence of heat. Then, when this deterioration proceeds, there is a risk that the windshield separates from the mirror and falls.

Next, conventionally, in the case where the front opening of the mirror is covered with the windshield, the windshield is previously adhered to the mirror and integrated, so that a cap for shielding the direct light is used. This cap was located outside the windshield. Therefore, the cap is moved closer to the windshield in order to enhance the light-shielding effect, but cannot be further moved closer to the light-emitting portion of the incandescent lamp because it is blocked by the windshield. For this reason, it is necessary to increase the outer diameter of the cap. However, if the outer diameter of the cap is increased, light that is not so dazzling reflected from a mirror having a light diffusion effect is also blocked, and light efficiency is reduced. Therefore, there is a limit to increasing the outer diameter of the cap, and direct light is radiated.

Accordingly, the present invention is to provide an incandescent lamp with a mirror, which has no danger of the windshield fixed with an adhesive coming off the mirror and falling off, and which can efficiently and completely block direct light. Aim.

[0008]

In order to achieve this object, the present invention fixes the base of an incandescent lamp to the neck of a bowl-shaped concave mirror and fixes the windshield to the front opening of the mirror with an adhesive. In the incandescent light bulb with a mirror, a hood provided with means for mechanically fixing the periphery of the mirror opening and the periphery of the windshield is arranged in front of the windshield, and the hood is located between the incandescent bulb and the windshield. A cap is provided to block direct light from the front edge toward the front.

[0009]

Since the hood disposed in front of the windshield is provided with means for mechanically fixing the periphery of the opening of the mirror and the periphery of the windshield, the windshield is fixed by adhesive and mechanically. Even if the adhesive deteriorates, the risk of falling off from the mirror and falling is eliminated.

Further, since the cap for blocking direct light from the front edge of the hood to the front is disposed between the incandescent lamp and the windshield, the cap can approach the light emitting portion of the incandescent lamp. Thus, the incandescent lamp can be efficiently covered with a small outer diameter, and the direct light can be efficiently and completely blocked in cooperation with the hood disposed in front of the windshield.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. In FIG. 1, an incandescent lamp 1 is a general lighting halogen lamp having a rating of 110 V and 100 W,
A sealing body 11 in which a small amount of halogen gas is sealed together with an inert gas is made of quartz glass, and one end is pinch-sealed to form a base 12. The base 12 has a pair of molybdenum foils 13 embedded therein. One end of the filament 1 serving as a light emitting portion is welded to the molybdenum foil 13 by a pair of internal lead wires 14 extending into the envelope 11.
5 are held along the axis of the enclosure 11. And
A pair of external leads 16, also welded at one end to the molybdenum foil 13, extend out of the base 12.

The mirror 2 is a glass bowl-shaped body having an opening 21 which is widened forward and has a reflective surface which reflects a visible light but transmits an infrared ray. It is a mirror. The base of the incandescent lamp 1 is inserted into the internal hole of the cylindrical neck 23 provided on the top of the mirror 2.
2 is fixed by the reflection plate 4. That is, the reflection plate 4
As shown in FIG. 4, is a basin made of a metal plate having a high spring property, and has a rectangular hole 41 corresponding to the size of the base 12 of the incandescent lamp 1 formed in the center. The base 12 of the incandescent lamp 1 is inserted into the rectangular hole 41, and the incandescent lamp 1 is held by the spring property of the reflector 4. The reflecting plate 4 is press-fitted into the inner hole of the neck portion 23, and the mirror 2 and the reflecting plate 3 are also fixed by the spring property of the reflecting plate 4. If necessary, the base 12 may be fixed to the neck 2 by an adhesive from the back side of the reflection plate 4.
It may be fixed directly to the inner hole of 3. Mirror 2 neck 23
A screw base 3 having a contact 31 is fixed to the end, and ends of the external lead wires 16 of the incandescent lamp 1 are electrically connected to the screw base 3 and the contact 31, respectively.

The windshield 5 made of, for example, borosilicate glass has a flange-shaped peripheral edge 51 fixed to the same flange-shaped opening peripheral edge 22 of the mirror 2 with an adhesive to cover the opening 21 of the mirror 2. And, as will be described next, the cylindrical hood 6 disposed in front of the windshield 5 is also auxiliary-fixed by mechanical fixing means provided.

That is, as shown in FIG. 3, an inward flange 61 is formed at the base end of the hood 6, and this inward flange 61 comes into contact with the back surface of the opening peripheral edge 22 of the mirror 2. I have. Then, an L fitting 62 abutting on the surface of the peripheral edge 51 of the windshield 5 is fixed to the hood 6 by a screw 63,
Opening edge 22 of mirror 2 and edge 51 of windshield 5
Is held by the L fitting 62 and the inward flange 61 of the hood 6. Therefore, even if the adhesive deteriorates due to the influence of heat, the windshield 5 does not separate from the mirror 2, and the safety is significantly improved.

Next, a cap 7 for blocking direct light directed forward from the front edge 6a of the hood 6 is provided between the incandescent lamp 1 and the windshield 5. The cap 7 is a bottomed cylindrical body having a small outer diameter, and the mounting portion 71 is fixed to the windshield 5 with screws 73. Alternatively, FIG.
As shown in the figure, a holding rod 72 having one end fixed to the reflection plate 4.
May hold the cap 7.

As described above, since the cap 7 is of a built-in cap type disposed between the incandescent lamp 1 and the windshield 5, the cap 7 can be brought close to the filament 15 which is a light emitting portion, and the outer diameter of the cap 7 can be reduced. The incandescent lamp 1 can be efficiently covered with the small cap 7. Then, as shown by a dashed line in FIG.
When the leading edge 6a of the hood 6 is positioned on the line connecting the base side end of the cap 7 and the leading edge 7a of the cap 7, the light reflected by the mirror 2 having a light diffusion effect is hardly blocked, and the direct light that is not reflected by the mirror 2 Only light can be completely blocked, and glare can be eliminated with a simple structure.

[0017]

As described above, the incandescent lamp with a mirror according to the present invention has a hood disposed in front of the windshield mechanically fixing the periphery of the opening of the mirror and the periphery of the windshield. In addition, since the cap is of a built-in type in which the cap is disposed between the incandescent lamp and the windshield, there is no danger that the windshield will fall off the mirror and fall, and direct light can be efficiently and completely blocked.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of another embodiment.

FIG. 3 is an enlarged explanatory view of a mechanical fixing means of the hood.

FIG. 4 is a perspective view of a reflection plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Incandescent lamp 12 Base of incandescent lamp 15 Filament 2 Mirror 21 Front opening of mirror 22 Peripheral edge of mirror opening 23 Mirror neck 3 Screw cap 4 Reflector 5 Windshield 51 Peripheral edge of windshield 6 Hood 7 Cap 72 Cap holding rod

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01K 7/00 F21M 1/00 F21V 7/09

Claims (3)

(57) [Scope of request for utility model registration] 1. An incandescent lamp with a mirror in which a base of an incandescent lamp is fixed to a neck of a bowl-shaped concave mirror, and a front glass is fixed to an opening at the front of the mirror with an adhesive. A hood provided with means for mechanically fixing the periphery of the hood is disposed in front of the windshield, and a cap for blocking direct light directed forward from the front edge of the hood is provided between the incandescent bulb and the windshield. An incandescent light bulb with a mirror, which is arranged. 2. The incandescent lamp with a mirror according to claim 1, wherein said cap is supported by a windshield. 3. The incandescent lamp with a mirror according to claim 1, wherein the base of the incandescent lamp is fixed to a mirror via a reflector, and the cap is supported by the reflector.