JPH0119761Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention relates to a reflector used in automotive lighting equipment such as halogen head lamps, and more specifically relates to a metal reflector formed by press-molding a metal plate. It is something.

<Prior art> As shown in FIG. 3, a conventional reflector of this type is made by press-molding a single metal plate to form a reflector member b having a valve base mounting hole a formed therein.
A separately molded valve base plate c is fixed to the valve base mounting hole a by caulking or the like, and a spring d for pressing the support plate B' of the valve B is attached to the valve base plate c. As a result, the number of assembly man-hours and number of parts was large, resulting in a problem that increased costs. Moreover, since it is necessary to form a relatively large hole for mounting the valve base in order to fix the valve base plate, there is a problem that the area of the ineffective reflection part of the reflector member inevitably increases. There was a problem where the heat radiated from the bulb was easily trapped inside.

<Problems to be solved by the invention> The present invention has been developed in view of these conventional problems, and it is possible to reduce costs by reducing the number of parts and assembly man-hours, and to solve the problem of ineffective reflection in the reflector. To provide a metal reflector for an automobile lamp whose area can be reduced compared to conventional products and which can easily radiate heat from the bulb to the outside of the reflector.

<Means for Solving the Problems> The reflector of the automotive lamp of the present invention that achieves the above purpose is obtained by press-molding a single metal plate to form the reflector part and the bulb base part into one body. , the valve base portion includes a raised base plate having a substantially trapezoidal shape on which a valve support plate is placed, a valve insertion hole formed in the base plate to allow the valve to be inserted, and a valve support plate that is held down. Two locking pieces are punched out from a part of the periphery of the base plate to hold the presser spring, and a heat radiation hole is formed by the punched portion of the locking piece. It is characterized by being composed of.

<Embodiment> Hereinafter, an example of the embodiment of the present invention will be described based on the drawings.

The reflecting mirror A is constructed by press-molding a single metal plate to form a reflecting mirror part 1 and a bulb base part 2 into the same body.

The reflecting mirror part 1 is formed, for example, in the shape of a paraboloid of revolution so as to obtain the required light distribution performance, and a bulb base part 2 for attaching and supporting the bulb B is molded into a continuous and identical body at the deepest part thereof.

The bulb base portion 2 includes a base plate 2a for mounting a support plate B' of the bulb B, a bulb insertion hole 2c for inserting the bulb B into the reflecting mirror A,
A presser spring 4 for pressing the support plate B' of the bulb B onto the base plate 2a, two locking pieces 2b for hooking the presser spring 4, and heat inside the reflector A are removed. Heat radiation hole 2d for releasing heat to the outside
It consists of The base plate 2a is formed in a substantially trapezoidal shape so as to stably support the support plate B' of the valve B, and the valve insertion hole 2c is formed in the center of the base plate 2a. At the same time, a protrusion 6 for positioning is provided protrudingly.
Further, the two locking pieces 2b, 2b are arranged around the base plate 2a, specifically, at two places located between the base plate 2a, which is protruded in a substantially trapezoidal shape, and the reflecting mirror part 1, in a substantially fan shape. These locking pieces 2b are punched out with one side remaining and are made to stand up and protrude opposite each other, and engagement holes 7 for locking the presser springs 4 are bored in these locking pieces 2b. The heat radiation hole 2d is also formed by punching out the two locking pieces 2b, 2b.

Therefore, when attaching the bulb B to the reflector A, the bulb B is attached to the base plate 2a of the bulb base portion 2.
The support plate B' of the valve B is placed on the base plate 2a of the valve base part 2 by inserting it into the valve insertion hole 2c formed in the opening, and then the two locking pieces 2b of the valve base part 2, Pressing spring 4 across 2b
are engaged, and the support plate B' of the valve B is pressed and fixed to the base plate 2a by the presser spring 4.

<Effects of the invention> Since the metal reflector of the automotive lamp of the present invention is constructed in this way, the bulb base part is molded into the same body as the reflector part, and the bulb base part has a presser foot for holding down the support plate of the bulb. It is only necessary to assemble the spring, and therefore the number of parts and assembly man-hours can be significantly reduced compared to conventional products, and costs can be reduced.

Moreover, since the bulb base can be made as compact as necessary, the area of the effective reflection surface of the reflector can be increased, and the area of the ineffective reflection part (bulb base) can be reduced compared to conventional products. This makes it a reflector with good reflection efficiency.

Furthermore, heat radiation holes are formed in the bulb base by punching out the two locking pieces that hold the presser springs, so the heat from the bulb is discharged to the outside of the reflector through these heat radiation holes. Therefore, the hot air radiated from the bulb will not be trapped inside the reflecting mirror, and the adverse effects of the hot air can be prevented.

Further, since the base plate is formed in a substantially trapezoidal shape with a raised protrusion, the support plate of the valve can be stably mounted and supported.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of the implementation of the present invention;
The figure is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a sectional view showing a conventional example. In the figure, A is a reflector, B is a bulb, B' is a support plate,
1 is a reflector part, 2 is a bulb base part, 2a is a base plate, 2b is a locking piece, 2c is a bulb insertion hole, 2d
4 is a heat dissipation hole, and 4 is a presser spring.

Claims (1)

[Scope of utility model registration request] A base plate in which the reflector part and the bulb base part are formed into the same body by press-molding a single metal plate, and the bulb base part is raised into a substantially trapezoidal shape on which the bulb support plate is placed. A valve insertion hole is formed in the base plate for inserting the valve, and a part of the base plate is punched out to hold a presser spring that presses down the support plate of the valve. A metal reflector for an automobile lamp, characterized in that it is comprised of two locking pieces, and a heat radiation hole formed by punching out the locking pieces.