JPS606964Y2 - vehicle headlights - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a novel vehicle headlamp.

In particular, a new vehicle with a relatively simple structure that is designed to insulate heat between the light source and the part of the lamp space that is most susceptible to the effects of heat, and also to release heat within the lamp space to the outside of the lamp. The purpose of this project is to provide a headlamp for use in vehicles.

Vehicle headlights use relatively high-output light sources to obtain the illumination power necessary to ensure traffic safety.

On the other hand, since the installation space for accessories in vehicles, such as automobiles, is limited, it is necessary to make the external shape as small as possible.

Therefore, a light source with a relatively high output relative to the volume of the lamp chamber is often used, and the heat emitted from the light source causes the temperature inside the lamp chamber to increase.

Although high temperature inside the lamp chamber is a problem in itself, it is not so fatal if materials with high heat resistance are used for the reflector and lens, but if materials with less heat resistance are used, If used, it would be a huge problem.

Recently, there has been an increasing need to use synthetic resin reflectors in vehicle headlights in response to demands for weight reduction and greater freedom in design.

Therefore, preventing the temperature inside the lamp chamber from increasing has become an extremely important issue.

Furthermore, since the area directly above the light source in the lamp room is exposed to particularly high temperatures, there is a risk that this area will be destroyed by the synthetic resin reflector, so it is necessary to insulate that area from heat.

Therefore, the present invention is designed to insulate the area directly above the light source, which is the part most susceptible to heat in the lamp space, and also to make it possible to release the heat inside the lamp space to the outside of the lamp. The purpose is to provide a relatively simple new vehicle headlamp, in which the heat shield part and the heat radiation part are integrally formed, or the heat shield part of the temperature control member formed integrally with the light source in the lamp space. It is characterized in that it is disposed between the reflector and a heat-sensitive part of the reflector, and the heat radiation part is disposed outside the reflector.

The details of the vehicle headlamp of the present invention will be described above according to the illustrated embodiments.

1 to 3 show a first embodiment of the vehicle headlamp of the present invention.

Reference numeral 1 denotes a synthetic resin type reflector, which includes a paraboloid of revolution part 2 whose front shape is a substantially oblong rectangle, and four paraboloids of revolution that protrude approximately forward from the left and right upper and lower edges of the paraboloid of revolution part 2. Plane part 3
I, 3rt, 3u, and 3d are integrally formed, and each plane part 31? A rectangular opening edge is formed by the front edges of 3r, 3u, and 3d.

A light bulb insertion hole 4 is formed in the center of the paraboloid of revolution 2, and a light bulb mounting tube 5 is integrally provided rearwardly projecting from the peripheral edge of the light bulb insertion hole 4.

A synthetic resin lens 6 is integrated with the opening edge of the reflecting mirror 1 by welding, gluing, etc., and a lamp space 7 is formed between the lens 6 and the reflecting mirror 1.

Reference numeral 8 denotes a light source unit, which is separated from the halogen bulb 9, the terminal member 10, 10, and the mold part 11.

In the terminal member 10, a light bulb holding part 13 is integrally connected to the front end of the intermediate part 12 via a step part, and a terminal member 14 is integrally connected to the rear end of the intermediate part 12 through the step part. ing.

Most of the terminal member 10 is made into a two-layered structure with both side edges folded toward the center to provide the required strength.

However, in the center part, the center of 12 and the light bulb holding part 13 have a single structure.

The light bulb holder 13 is made up of clamping pieces 16, 16 which are continuous from both side edges of the main part 15 so as to form a U-shape in cross section together with the main part 15.

and intermediate portions 12, 12 of the terminal member 10.10.
is embedded in a molded part 11 made of synthetic resin, and a halogen light bulb 9 is held between the light bulb holding parts 13.

That is, both ends of the pinch seal part 17 of the halogen light bulb 9 are connected to the clamping pieces 16, 16 and 16 of the light bulb holding parts 13 and 13.
, 16.

Reference numeral 18.18 is an external lead wire of the nozzle bulb 9 led out through the pinch seal portion 17, and its tip is connected to the terminal member 10.10 by soldering or the like.

However, such a light source unit 8 is a halogen light bulb 9.
is inserted through the mounting tube 5 and placed into the lamp space 7, and the mold part 11 is fitted into the light bulb mounting tube 5. In this state, the mold part 11 is fixed to the light bulb attachment tube 5 by adhesion, welding, or the like.

Reference numeral 19 denotes a temperature control member made of a metal plate with good thermal conductivity, which extends from the rear end of the approximately plate-shaped heat shielding part 20 to the approximately plate-shaped heat dissipating part 21.
It has an integrally extending shape.

The temperature control member 19 is provided so as to penetrate the upper end portion of the paraboloid of revolution portion 2 of the reflecting mirror 1 in the front and back directions.
covers the underline of the upper flat part 3u of the reflecting mirror 1, and the heat dissipating part 21
is made to protrude rearward from the rear of the reflector 1.

To provide the temperature control member 19 in this way, for example, when molding the reflecting mirror 1, the temperature control member 19 is placed in the mold.
It is better to insert and make an integral shape.

In the vehicle headlight as described above, the temperature control member 19
Since the heat shielding part 20 is arranged between the light bulb 9 and the upper flat part 3u of the reflector 1, the heat is prevented from flowing to the upper flat part 3u, which is the part of the lamp space 7 that is most exposed to high heat. Heat shield part 2
0 protects the portion 3u from heat.

Further, the heat radiation part 21 of the temperature control member 19 is projected outside the reflecting mirror 1, and it is connected to the heat shield part 2 in the lamp space 7.
0, the heat in the lamp space 7 is transferred to the heat shield part 20 →
Since the heat is transmitted to the heat radiating part 21 and radiated to the outside, it is possible to prevent the temperature in the lamp space 7 from becoming too high.

4 and 5 show a second embodiment of the vehicle headlamp of the present invention.

In this embodiment, the same reflecting mirror 1, lens 6 and light source unit 8 as in the first embodiment are used.

The temperature control member 22 also has a heat shielding part 23 and a heat radiating part 24 formed integrally, but the heat radiating part 24 is formed in a corrugated plate shape to increase the heat radiation area, and the heat shielding part 23 The width of the intermediate portion 25 between the heat dissipating portion 24 and the heat dissipating portion 24 is narrowed,
The intermediate portion 25 is held in a pinched manner between the light bulb mounting tube 5 of the reflecting mirror 1 and the mold portion 11 of the light source unit 8.

In this embodiment as well, the heat shielding part 23 blocks the heat directly radiated from the light source to the upper plane part 3u and protects the part 3u, and the heat is transmitted from the heat shielding part 23 to the intermediate part 25 to the heat radiating part 24 of the lamp. Heat within the space 7 is released.

6 to 8 show a third embodiment of the vehicle headlamp of the present invention.

In this embodiment, the heat shielding part 27 of the temperature control member 26 is grooved so that the center of the front face protrudes downward, and the heat dissipating parts are arranged upwardly on both sides of the heat shielding part 27 with a phase interval. A plurality of protrusions 28.
2B......appears closed.

Then, this temperature control member 26 is formed into a heat dissipating protrusion 2 by a method such as forming an insert bottom when the reflecting mirror 1 is molded.
8. 28. . . . are integrated into the reflecting mirror 1 so that their bases are buried within the thickness of the upper flat part 3u of the reflecting mirror 1 and their tips protrude from the upper surface of the upper flat part 3u.

In this embodiment as well, the heat of the light source that is directly radiated onto the upper flat part 3u of the reflecting mirror 1 is shielded by the heat shielding part 27 of the temperature control member 26, and furthermore, the heat shielding part 27 and the heat radiation protrusion 28 in the lamp space 7 .28. Heat is radiated to the outside through...

It should be noted that if the heat shielding portion 26 is curved as in this embodiment, convection due to heat within the lamp space 7 is likely to be promoted while being slightly disturbed, and local increases in temperature can be relatively avoided.

9 to 14 show a fourth embodiment of the vehicle headlamp of the present invention.

In this embodiment, the vehicular headlamp of the present invention is assembled into a housing to achieve even greater heat dissipation effects.

The temperature control member 29 used in this embodiment is integrally connected by a plate-shaped heat radiation part 31 and an intermediate part 32, like the plate-shaped heat shield part 30, and has a substantially U-shape as a whole. A plurality of through holes 33 are formed in the portion 32, and several protrusions 34 protruding toward the heat shielding portion 30 are formed in the heat radiation portion 31.

A protrusion 35 corresponding in number and size to the through holes 33 of the temperature control member 29 is formed at the upper part of the lens 6 where it abuts against the front end surface of the reflecting mirror 1.
With the lens 6 and the reflecting mirror 1 fitted into the through hole 33, the lens 6 and the reflecting mirror 1 are integrated by adhesion, welding, etc., and thereby the temperature control member 29 is also integrated with the reflecting mirror 1 and the lens 6.

At this time, the protrusions 3 provided on the heat dissipation part 31
4 is in contact with the upper surface of the upper flat part 3U of the reflecting mirror 1, and the heat dissipation part 31
An appropriate distance is formed between the upper flat part 3u of the reflecting mirror 1 and the upper flat part 3u of the reflecting mirror 1.

Reference numeral 36 denotes a metal mountain ring, and the vehicle headlamp of the present invention is held in a pinched manner between this and a metal glue tening ring 37.

The mountain ring 36 is formed with an annular mounting edge 38 on which the rear surface of an annular flange 39 at the junction with the lens 6 of the reflector 1 is placed.

Further, the mountain ring 37 has several coupling ears 40 and two coupling ears 41 protruding outward, and the coupling ears 41 are provided with engagement notches 42. has been done.

The retaining ring 37 has a locking edge 43 formed by folding its front end edge inward and is engaged with the front surface of the annular flange 39, and has mounting ears 4 protruding outward.
4 is the screw 4 on the connecting ear piece 40 of the mountain ring 36.
5, and thereby the vehicle headlamp of the present invention is held in a pinched manner between the mountain bling and the retaining ring 37.

46 is a housing, to which the mountain ring 36 is attached so that its angle can be adjusted.

The housing 46 is formed with a sliding edge 47 that protrudes inward, and the mountain ring 36 runs over this sliding edge 47.
A protrusion 48 formed on the outer surface along the axial direction is brought into contact with the protrusion 48 .

Further, a self-locking nut 49 is attached to the housing 46 at a location corresponding to the connecting lug 41 of the mountain ring 36, and the head 50 is attached to the locking nut 49 which is engaged with the engagement notch 42 of the connecting lug 41. The tip of the sting screw 51 is screwed into a self-locking nut 49.

Furthermore, a coil spring 52 is tensioned between the mountain ring 36 and the housing 46 at a location other than the one where they are connected by the adjusting screw 51, so that the mountain ring 36 is kept pressed against the housing 46. It has become.

By screwing one or both of the two adjusting screws 51 into or out of the self-locking nut 49, the protruding ridge 48 of the mountain ring 36 touches the sliding edge 47 of the housing 46. This causes the mountain ring 36 to tilt relative to the housing 46.

In the vehicle headlamp of this embodiment, when held in a sandwiched manner between the mountain ring 36 and the retaining ring 37, the heat dissipating portion 31 of the temperature control member 29
The rear end of the mountain ring 36 is adapted to be brought into contact with the inner surface of the mountain ring 36.

In this embodiment, the upper plane part 3u of the reflecting mirror 1 is shielded from heat from the light source by the heat shielding part 30, and the heat in the lamp space 7 is released through the heat shielding part 30, the intermediate part 32, and the heat radiation part 31. Since the rear end of the heat dissipation section 31 is in contact with the inner surface of the mountain ring 36, the heat transmitted to the heat dissipation section 31 is further transferred to the mountain bring 36.
6, which has the advantage of further increasing the heat dissipation effect.

15 and 16 show a fifth embodiment of the vehicle headlamp of the present invention.

In this embodiment, the heat shielding part 53 and the heat radiating part 54 are integrally connected at their front ends by a connecting part 55 to form a temperature control member 56.

By embedding the connecting portion 5 in the front end of the upper flat portion 3u of the reflecting mirror 1, the temperature control member 56 is integrally fixed to the reflecting mirror.

The heat dissipating part 54 is bent so that its middle part is sloped, and the rear horizontal part 57 is bent like a mountain bling 3.
It is designed to make surface contact with the inner surface of 6.

In this embodiment, since the heat dissipation part 54 is in contact with the mountain ring 36 over a wider area, the heat dissipation part 54 is in contact with the mountain ring 36 over a wider area.
The heat transfer effect from the mountain ring 36 to the mountain ring 36 is better than that in the fourth embodiment described above, and the heat dissipation effect is also greater.

Note that in the temperature control member 56, the connecting portion 55 is connected to the heat shielding portion 53.
Although it is formed integrally with the heat radiation part 54, the connecting part 55
The heat shielding part 53 and the heat dissipating part 54 may be formed separately and then integrated by welding or the like.

In this case, it is preferable to use a heat pipe as the connection part because heat conduction is good.

17 and 18 show a sixth embodiment of the vehicle headlamp of the present invention.

In the temperature control member 58 of this embodiment, a heat radiation part 60 is integrally projected rearward from the center of the rear end of the heat shield part 59.

The heat shield portion 59 is formed in the shape of a corrugated plate, and bent pieces 61° 61 are formed slightly upwardly from both side edges of the heat shield portion 59.

Then, the heat radiating part 60 is projected rearward from the upper part of the paraboloid of revolution part 2 of the reflecting mirror 1, and in this state, the base of the heat radiating part 60 is fixed to the reflecting mirror 1 by adhesive or welding.

At this time, bent pieces 61 formed on both side edges of the heat shield part 59
．． The upper end of 61 is brought into contact with the inner surface of the upper flat part 3u, and the corrugated main part is separated from the upper flat part 3u.

In this embodiment, since the heat shielding portion 59 is curved in the shape of a corrugated plate, convection within the lamp space 7 seems to be promoted while being disturbed.

It is possible to prevent localized increases in temperature.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the vehicle headlamp of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a partially cutaway perspective view, and FIG. 3 is a light source. An enlarged perspective view of the unit, FIGS. 4 and 5 show a second embodiment of the vehicle headlamp of the present invention, FIG. 4 is a longitudinal sectional view, and FIG. 5 is a perspective view of the temperature control member.
6 to 8 show a third embodiment of the vehicle headlamp of the present invention, FIG. 6 is a partially cutaway perspective view, FIG. 7 is a perspective view of the temperature control member, and FIG. 8 is a perspective view of the temperature control member. are longitudinal sectional views, Figures 9 to 1
Figure 4 shows the fourth embodiment of the vehicle headlamp of the present invention, and the ninth embodiment shows the vehicle headlight of the present invention.
The figure is a front view, FIG. 10 is a sectional view taken along the line X-X in FIG. 9, FIG. 11 is a sectional view taken along the
The figures are a cross-sectional view taken along the ■ - cutting line in Fig. 9, Fig. 13 is a perspective view of the temperature control member, Fig. 14 is a perspective view of the lens, and Figs. 15 and 16 are the vehicle headlight of the present invention. 15 is a longitudinal sectional view, FIG. 16 is a perspective view of a temperature control member, and FIGS. 17 and 18 are a sixth embodiment of the vehicle headlamp of the present invention. 17 is a longitudinal sectional view, and FIG. 18 is a perspective view of the temperature control member. Explanation of symbols: 1...Reflector, 7...Lamp space, 9...Light source, 19...Temperature control member, 20...・Heat shielding part, 21... Heat dissipation part, 22... Temperature control member, 23...
・Heat shielding part, 24... Heat dissipation part, 26...
Temperature control member, 27... Heat shield part, 28...
...Heat radiation part, 29...Temperature control member, 30...
...Heat shielding part, 31... Heat dissipation part, 53...
...Heat shielding part, 54... Heat radiation part, 56...
...Temperature control member, 58...Temperature control member 5
9... Heat shielding part, 60... Heat radiation part.

Claims (1)

[Scope of utility model registration request] A heat shielding part of a temperature control member in which a heat shielding part and a heat radiating part are formed integrally or integrally is arranged between the light source and a heat-sensitive part of the reflector in the lamp space, and the heat radiating part A vehicle headlamp characterized by being placed outside the reflector.