JPS5834644Y2 - headlights - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sealed beam type headlamp.

Conventional headlights of this type include those with an all-glass reflector body and those with a metal back.

However, the former has the disadvantage that it is heavy because the reflector is made entirely of glass.

Further, in the latter case, since the reflector body is a metal back and not an insulator, it is necessary to insulate the lead-in wire or external terminal of the bulb from the reflector body, which has the disadvantage of complicating the structure.

The present invention aims to provide a headlamp that overcomes the above-mentioned drawbacks.

Hereinafter, two rows of the embodiments of the headlight according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a first embodiment of a headlamp according to the present invention.

The headlight of the present invention in this embodiment includes a halogen bulb 1 having an inlet line 10, a resin reflector body 2, and an external terminal 3.
, a pair of fixing plates 4, 4, and a pair of heat insulating plates 5, 5.

The resin reflector body 2 is made of resin, and aluminum or the like is vapor-deposited on its inner surface to improve reflection efficiency.
0, and a through hole 21 for inserting the lead-in wire 10 and a through hole 22 for gas filling are provided approximately at the center of the back.

First ribs 23 , 23 are provided around the through hole 21 in a ring shape so as to accommodate the fixing plates 4 , 4 and the heat insulating plates 5 , 5 so as to protrude from both the inner and outer surfaces of the resin reflector body 2 . A second rib 24 is provided outwardly from the first rib 23 in a ring shape so as to protrude only on the outer surface side of the resin reflecting mirror body 2.

The fixing plate 4 is connected to the first
It has a disc shape that can be stored in the rib 23, and has a through hole 4 in the center thereof having a diameter slightly smaller than the diameter of the lead-in wire 10 of the valve 1.
0, and a pair of elastic pieces 41, 41 having elasticity are formed by cutting and raising opposing portions of the peripheral edge of the through hole 40.

Further, the heat insulating plate is similar to the fixing plate 4 and has the first rib 2.
It has a disc shape that can be stored in 3, and the introduction line 1 is in the center
Provide a through hole through which 0 passes.

Then, the introduction wire 10 of the bulb 1 cut to a specified length is inserted into the through hole 21 of the resin reflector body 2, and the first
Set a pair of heat insulating plates 5, 5 to the ribs 23, 23, set the external terminal 3 to the outer heat insulating plate, and then fix the pair to the outside of the pair of heat insulating plates 5, 5 and the external terminal 3. The leads 10 of the bulb 1, the external terminal 3, and the pair of heat insulating plates 5, 5 are fixed at the first ribs 23, 23 by fixing the plates 4, 4 together.

At this time, the lead-in wire 10 is connected to the elastic pieces 41.4 of the fixed plates 4, 4.
1.41.41) and is electrically connected to the top terminal 3 through the outer fixing plate 4.

Then, gas is filled in through the gas filling hole 22, and an insulating sealant 6 is applied to the second rib 24 to seal the lead-in wire 10, external terminal 3, heat insulating plates 5, 5, and fixing plates 4, 4. It is sealed and fixed, and the through hole 24 for gas filling is sealed.

In the headlight of the present invention in this embodiment, the reflector body 2 is made of resin, so it is lighter in weight compared to an all-glass one, and the bulb lead-in wire 10 and external terminals are lighter than in a metal-backed one. There is no need to insulate between the reflector 3 and the reflector 2, and the structure is simple.

Moreover, the portion of the resin reflector body 2 closest to the bulb 1, that is, the first rib 23 provided with the through hole 21 for insertion of the lead-in wire.
Since the inner part is covered with the heat insulating plate 5, that part can be protected from the heat generated by the bulb 1.

Therefore, a heat-resistant resin can be used in the resin reflecting mirror body 2, and the range of selection of resin materials to be used is widened, and physical properties against heat are not selected.

Further, since the second rib 24 is provided on the back surface of the resin reflector body 2, the sealing agent 6 does not protrude outside, so that the sealing performance is perfect and reliable.

FIG. 3 is a sectional view showing a second embodiment of the headlamp according to the present invention.

In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same parts.

Therefore, in the headlamp of the present invention in this embodiment, a heat insulating member 7 (for example, an insulator) molded into a bobbin shape is set in a mold for molding a resin reflector body, and the lead-in wire is formed at the same time as the resin reflector body 2 is molded. A lead-in wire 10 cut to a specified length is integrally molded at a portion corresponding to the insertion hole 21, and the lead-in wire 10 cut to a specified length is passed through the heat insulating member 7, and the lead-in wire 10 and the external terminal 3 are connected with solder 8.
Since the structure is fixed by the above-mentioned structure, it is possible to obtain the same effects as those of the above-mentioned embodiments, and also to reduce the number of parts.

As is clear from the above examples, the headlight of the present invention has a reflective body made of resin, so it is much lighter in weight than an all-glass headlight, and it is also lighter in weight than a metal-backed headlamp. In comparison, there is no need to insulate between the bulb lead-in wire or external terminal and the reflector, and the structure is simple.

In particular, in the present invention, a heat insulating member is provided at least on the inner side of the through hole for the insertion of the bulb lead-in wire in the resin reflector body, that is, in a portion close to the bulb. Therefore, it is possible to use a heat-resistant resin for the resin reflecting mirror body, and the range of selection of resin materials to be used is widened, and there are effects such as not having to choose physical properties against heat.

Note that, as a matter of course, the headlamp of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the first embodiment of the headlamp of the present invention, Fig. 2 a, l) is a plan view and front view of the fixing plate, and Fig. 3 is a cross-sectional view of the headlamp of the present invention. FIG. 3 is a sectional view showing a second embodiment. 1...Valve, 10...Introduction line, 2.
...Resin reflecting mirror body, 20...Reflecting mirror surface,
21...Through hole for introducing lead wire, 3...External terminal, 5...Insulating plate, 7...Insulating member.

Claims (1)

[Scope of utility model registration request] A bulb having a lead-in line, a resin reflector body made of resin and having a reflective mirror surface on the inner surface, an external terminal, and a heat insulating member, a through hole is formed in the back of the resin reflector body, and the through hole is provided with the A headlamp characterized in that the lead-in wire of the bulb is passed through, the lead-in wire and the external terminal are integrally connected, and the heat insulating member is arranged on the inner surface of the resin reflecting body at least near the through-hole. .