JPS6110249Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamp assembly, and more particularly to a photography lamp assembly with improved performance and reduced number of parts.

In a conventional photographic lamp assembly for a vehicle, as shown in Fig. 1, the collar c of a bulb b is detachably attached to the rear of a reflector a, which is formed by pressing a metal plate into a substantially paraboloid of revolution. The bulb holder d is fixed with rivets or the like, and the peripheral leg h of the lens g is arranged in a watertight manner through an adhesive f applied in the groove e formed at the peripheral edge of the front opening of the reflector a. A rim frame j having a substantially L-shaped cross section is brought into contact with a flange i formed on a peripheral leg h of a lens g,
A lamp assembly was constructed by assembling the rim frame j and the pot-shaped housing k using screws or the like.

However, in the conventional lamp assembly having the above-mentioned configuration, the adhesive f leaks into the lamp chamber defined by the reflector a and the lens g. Impurities contained in the adhesive f evaporate due to changes in the temperature and adhere to the back surface of the lens g or the surface of the reflecting mirror a, resulting in a decrease in the amount of light transmitted through the lens g or reflection on the reflecting mirror a. This caused a decrease in lamp performance.

In addition, in order to prevent the lamp body from vibrating within the rim frame i and housing k when the lamp assembly is installed on the bumper of a vehicle, etc., the housing k is cut in several places around the periphery so that it can be moved inwardly. It was necessary to form a protruding piece l that is bent in a direction, and to provide a cushion material m between the protruding piece l and the bottom surface of the groove e. The process of bending the projecting piece l inward requires four pressing steps because it creates an undercut. Furthermore, a large number of parts are required, and a lot of time and effort is required for parts management. In addition, when spot welding is used, there is a problem in that the spots become pock-like and spoil the appearance.

In view of the above circumstances, it is an object of the present invention to provide a lamp assembly that can prevent deterioration of lamp performance due to adhesives, simplify the number of parts, and maintain vibration resistance.

Hereinafter, embodiments of the lamp assembly according to the present invention will be described with reference to FIGS. 2 to 6.

2 to 4 show a first embodiment of a lamp assembly according to the present invention, and the lamp assembly of this embodiment includes a reflector 2 in which a bulb 1 is disposed, and a reflector 2 in which a bulb 1 is disposed. A lens 3 that covers the front aperture of 2 and a reflecting mirror 2
A rising wall 32 is formed on the outside of the bottom surface 31a of the peripheral leg portion 31 of the lens 3, and a rising wall 32 is formed on the outside of the bottom surface 31a of the peripheral leg 31 of the lens 3.
A groove 20 is formed by the rising wall 32 and the opening periphery 21 by bringing the opening periphery 21 of the reflecting mirror 2 into contact with the opening periphery 21 , and applying an adhesive 5 that remains elastic even after solidification into the groove 20 . The housing 4 and the reflecting mirror are fixed with a screw with the opening peripheral portion 41 of the housing 4 in contact with the adhesive 5.

Specifically, a part of the inner surface of the reflecting mirror 2 is formed into a substantially paraboloid of revolution shape, and a bulb holder 22 is provided at the rear part of the reflecting mirror 2.
is permanently installed. The flange 11 provided on the bulb 1 is removably attached to the bulb holder 22 with screws, etc., so that the filament of the bulb 1 is positioned at the focal point of the reflector 2. A light shielding plate 23 that blocks direct light from the filament is fixed with rivets or the like.

The lens 3 is made of glass or transparent synthetic resin, and has a lens surface 33 on which many lens elements are formed.
The rising wall 32 and a projecting wall 34 for positioning the opening peripheral part 21 of the reflecting mirror 2 are protruded inward intermittently or over the entire circumference on the bottom surface 31a of the peripheral part 31 formed around the reflecting mirror 2.

The housing 4 is formed into a generally pan-shaped shape so as to house the reflector 2, and has a generally U-shaped mounting bracket 52 fixed to the lower part thereof with rivets or the like. A mounting device 6 for mounting on a bumper or the like is attached so that the angle can be freely adjusted. For details, refer to the mounting device 6 in this example.
consists of a substantially U-shaped bracket 61 and a bolt 62, and the angle can be adjusted by screwing mounting bolts 64a, 64b onto both side walls of the bracket 61 through washers 63a, 63b to both sides of the mounting bracket 52. It can be installed freely, with 6 bolts
2 is welded and fixed to the bottom wall of the bracket 61, and this bolt 62 is inserted into a mounting hole made in the bumper, and a nut 66 is screwed in from the back side of the bumper through washers 65a and 65b to enable installation to the bumper. be.

Note that the opening peripheral portion 41 of the housing 4 described above
The diameter is smaller than the inner diameter of the rising wall 32 formed around the entire circumference of the peripheral leg portion 31 of the lens, and larger than the outer diameter of the opening peripheral portion 21 of the reflecting mirror 2.

Next, to describe the assembly of the lamp assembly of this example, the opening periphery 21 of the reflecting mirror 2 is brought into contact with the bottom surface 31a of the peripheral leg 31 of the lens 3, and the space between the opening periphery 21 and the rising wall 32 is A groove 20 is formed in the groove 20. That is, the groove 20 is formed by the bottom surface 31a, the rising wall 32, and the opening peripheral portion 21 of the reflecting mirror 2. Then, an adhesive 5 that remains elastic even when hardened, such as a silicone-based or vinyl chloride-based adhesive, is applied to the entire circumference of the groove, and is allowed to harden in a drying oven. After that, the opening peripheral part 41 of the housing 4 is brought into contact with the adhesive 5, and in this state, the screw 7 is screwed into the mounting pieces 24 fixed at several places on the back surface of the reflecting mirror 2 from the rear of the housing 4. Assemble the reflecting mirror 2 and the housing 4.

As described above, in the lamp assembly of the present invention, since the adhesive 5 is not exposed in the lamp chamber defined by the reflector 2 and the lens 3, the adhesive may be damaged by heat from the bulb 1 and changes over time. Even if the impurities in 5 evaporate,
Since impurities can be prevented from adhering to the reflecting surface of the reflecting mirror 2 and the lens surface 33 of the lens 3, deterioration of lamp performance can be prevented.

Furthermore, since the adhesive 5 applied in the groove 20 remains elastic even when solidified, it functions as a cushion material.
It is possible to eliminate the use of a separate cushion material for vibration resistance as in the past, and there is no need to provide the protrusion l on the housing 4, so the number of parts and assembly can be simplified accordingly.

Furthermore, the screw 7 is attached to the mounting piece 24 of the reflecting mirror 2.
When screwing together the housing 4 from the rear, the opening peripheral edge 41 of the housing 4 is pressed against the adhesive, so that the water resistance between the reflecting mirror 2 and the housing 4 can also be improved.

FIG. 5 shows a second embodiment, and redundant explanations from the previous embodiments will be omitted, and only different points will be explained.

This example is a cross-sectional view corresponding to the - line in FIG.
A positioning projecting wall 34 of the opening peripheral portion 21 of the reflecting mirror 2 is formed approximately at the center of the bottom surface 31a, and a rising wall 32 is continuously provided to the projecting wall 34.

FIG. 6 shows a third embodiment, in which the housing 4 is made of synthetic resin or die-casting, and a lens peripheral leg portion 31 is provided around the opening peripheral portion 41.
A protective wall 43 is integrally formed therein. The outer peripheral surface of this protective wall 43 may be decorated.

As mentioned above, the lamp assembly of the present invention is
A rising wall that protrudes rearward from the outside of the bottom surface of the peripheral leg of the lens, comprising a reflecting mirror in which a bulb is disposed inside, a lens that covers the front opening of the reflecting mirror, and a housing that houses the reflecting mirror. At the same time, the opening periphery of the reflecting mirror is brought into contact with the bottom surface of the lens periphery leg so that a groove is formed by the rising wall and the opening periphery of the reflecting mirror, and an elastic adhesive is placed in the groove. Since the housing and reflector are assembled with a screw or the like with the opening edge of the housing in contact with the adhesive, the adhesive will not be exposed inside the lamp chamber and impurities will not evaporate. It is possible to prevent deterioration of lamp performance due to In addition, since the adhesive remains elastic even after solidifying, it acts as a cushion and prevents the lamp from vibrating within the housing, and does not require a separate cushion material, etc., as in the past. Therefore, the number of parts, assembly time, and man-hours for managing these parts can be reduced accordingly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional example. 2 to 4 show a first embodiment of the present invention, in which FIG. 2 is a front view, FIG. 3 is a sectional view taken along the - line in FIG.
The figure is a sectional view taken along the line -- in FIG. 2. FIG. 5 is a sectional view taken along the - line in FIG. 2 showing the second embodiment, and FIG. 6 is a sectional view taken along the - line in FIG. 2 showing the third embodiment. DESCRIPTION OF SYMBOLS 1...Bulb, 2...Reflector, 21...Aperture periphery, 3...Lens, 31...Peripheral leg, 31a
... Bottom surface, 32 ... Rising wall, 4 ... Housing, 41 ... Opening periphery, 5 ... Adhesive, 7 ...
Screw, 20...groove.

Claims (1)

[Scope of utility model registration request] A rising wall that is composed of a reflecting mirror in which a bulb is arranged inside, a lens that covers a front opening of the reflecting mirror, and a housing that houses the reflecting mirror, and that projects rearward outside the bottom surface of the peripheral leg of the lens. At the same time, the opening periphery of the reflecting mirror is brought into contact with the bottom surface of the lens periphery leg, and a groove is formed by the rising wall and the opening periphery of the reflecting mirror. 1. A lamp assembly characterized in that a housing and a reflecting mirror are assembled with a screw or the like with the opening peripheral portion of the housing being in contact with the adhesive.