JPH07249304A - Lighting fixture for vehicle - Google Patents

Abstract

PURPOSE:To provide a lighting fixture for a vehicle by preventing overheat of a shade for shielding part of light from a bulb or a reflector, and improving appearance. CONSTITUTION:A shade 40 for shielding part of light to be emitted from a bulb 16L comprises a cap 41 for covering part of the bulb, a connecting portion 42 extending upward from the cap 41, and a fixing portion 43 obtained by bending the tip of the connecting portion 42. The connecting portion 42 is formed narrowly while the fixing portion 43 is formed widely. The shade 40 is locked at part of a reflector 20, which is partly covered with the fixing portion 43. Heat of the cap 41 is hardly transmitted to the fixing portion 43 by the narrow connecting portion 42. Consequently, radiation heat from the bulb 16L is shielded by the wide fixing portion 43, thus preventing thermal deterioration of the reflector 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp including a shade used to block a part of light emitted from a light bulb.

[0002]

2. Description of the Related Art A vehicular lamp such as a headlight of an automobile is required to have a required light distribution characteristic. Therefore, in order to satisfy this characteristic, a part of light emitted from a light bulb provided in the lamp is partially emitted. A shade is provided to block light. For example, a so-called low-beam lamp used when passing each other is configured to block direct light of light emitted from a light bulb and irradiate light reflected by a reflector from a lamp.

FIG. 11 shows an example thereof, in which a lens 102 is attached to a front opening of a lamp body 101 and a lamp chamber 1 is attached.
No. 03 is defined, and a reflector 104 is formed in the lamp chamber 103 by molding a resin material into a paraboloid of revolution and applying aluminum or the like to its inner surface to serve as a reflecting surface. Is used to support the light bulb 106. Then, in order to prevent the light emitted from the light bulb 106 from being directly irradiated through the lens 102, the light bulb 1
A shade 107 is arranged on the front side of 06 to shield light, and the light not shielded by the shade 107 is reflected by the reflector 104 and transmitted through the lens 102 for irradiation. The shade 107 has, for example, a cap portion 108 formed by molding a metal plate. A support piece 109 is extended from a part of the cap portion 108, and the support portion 109 is used to attach the cap portion 108 to the reflector 104. I support you. The support piece 109 is formed as, for example, a stem integrated with the cap portion 108,
The tip portion thereof is locked to the reflector 104 with a screw 110.

[0004]

In the conventional lamp having such a shade, the cap portion 108 includes the light bulb 106.
The heat generated by the light bulb 106 is directly transmitted to the cap portion 108 because it is provided so as to cover substantially the front half of the above, more precisely, the front side of the filament position.
08 will be overheated. Then, this heat is transmitted to the reflector 104 via the support piece 109, and a region in the vicinity of the screw 110 that engages with the reflector 104 may be overheated, and the resin forming the reflector 104 may be deteriorated by the heat. In addition, the heat generated by the light bulb 106 is radiated to the reflector 1 which is positioned directly above the light bulb 106.
There is a possibility that a partial region of 04 is overheated and the resin in this region is deteriorated by heat.

When the reflector 104 is partially deteriorated due to such heat, the fastening force of the screw 110 for supporting the shade 107 is reduced, and this portion is damaged by vibration or shock when the automobile is running. Shade 107
May be dropped. Further, the reflective surface of the thermally deteriorated region of the reflector 104 is deformed due to the thermal deterioration,
Alternatively, there is a problem in that the aluminum coating film on the surface is peeled off and light reflection for obtaining normal light distribution characteristics is not performed. Further, the shade 107 is attached to the reflector 10
Since it is fixed on the reflecting surface of No. 4, the reflecting surface may be accidentally scratched during the fixing work, which causes deterioration of the reflection efficiency and the light distribution characteristics.

With respect to such overheating of the reflector,
Conventionally, a structure such as disposing a heat shield plate on a part of the reflector has been adopted, but the need for such a heat shield plate as a separate component means that the number of components constituting the lamp is increased. Therefore, it is not preferable in terms of the number of parts, workability of assembling the parts, cost and the like. Also, if the shade is supported by a reflector with a screw or the like, it is necessary to fasten the screw when assembling the lamp, and this screw is exposed through the lens from the outside of the lamp, and the appearance of the lamp is good. Will be lowered. Further, the support by the support piece and the screw has a problem that the shade is easily moved around the screw and it is difficult to stably support the shade at a predetermined position.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp capable of ensuring a highly reliable shade structure without deterioration of the shade supporting function even when the shade is overheated. It is in. Another object of the present invention is to provide a vehicular lamp capable of preventing the shade from overheating by increasing the heat dissipation of the shade. Further, another object of the present invention is to provide a vehicular lamp capable of preventing the reflector from overheating without providing a heat shield plate or the like as a separate component. Another object of the present invention is to provide a vehicular lamp capable of supporting a shade without requiring screws and the like and preventing the appearance of the shade from being deteriorated. Further, at the same time, there is provided a vehicle lamp capable of supporting the shade stably and without damaging the reflector.

[0008]

The vehicle lamp of the present invention comprises:
A shade for shielding a part of the light emitted from the light bulb is formed by forming a cap portion that covers a part of the light bulb, a connecting portion extending upward from the cap portion, and an upper end portion of the connecting portion by bending. An attachment part is provided, the attachment part is locked to a part of a resin reflector provided in the lamp, and the attachment part covers a part of the reflector.

Further, the connecting portion is formed to have a narrow width, the attaching portion is formed to have a width dimension larger than that of the connecting portion, and the attaching portion is inserted and supported between a pair of rails provided on the reflector. Further, a tongue piece is projected on the attachment part, a slit is formed in the reflector through which the tongue piece is inserted, the tongue piece is inserted into the slit, and the tip of the tongue piece is bent to form a reflector. It is configured to be locked.

[0010]

According to the present invention, even when the shade is overheated by the heat generated by the light bulb, the connecting portion is formed to have a narrow width, so that the heat is immediately transferred to the attachment portion at the tip portion. In this case, the attachment portion is prevented from being overheated and the reflector is prevented from being deteriorated due to heat, and the support function of the shade is not deteriorated. In addition, by configuring the attaching portion provided at the tip of the attaching portion to be wide, the heat transferred from the cap portion to the attaching portion through the connecting portion is effectively radiated,
Prevents overheating of the reflector portion engaged with the attachment portion.

Further, since the attachment portion covers a part of the reflector, the reflector is prevented from being overheated by the direct light from the electric bulb, and the reflector is prevented from being overheated without providing a heat shield plate as a separate component. Also, the attachment part is inserted into a pair of rails provided on the reflector for attachment, and the tongue piece provided on the attachment part is passed through the slit of the reflector and then caulked and fixed to support the shade. This allows the shade to be supported without the need for screws, etc.
This can reduce the number of work steps and prevent the appearance of the lamp from being deteriorated due to the exposed screws. Furthermore,
Since the shade is fixed on the back side of the reflector, there is less risk of damaging the reflecting surface of the reflector.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is applied to a combination headlight of an automobile, and FIG. 2 is an enlarged plan view of a part thereof. The lamp body 10 is formed of a black resin in a horizontally long shape, and a lens 11 formed of a transparent resin is attached to a front opening of the lamp body 10 to define a lamp chamber 12 with the lamp body 10. A seal leg 11a is integrally formed on the peripheral edge of the lens 11 so as to project rearward, and the seal leg 11a is formed on the lamp body 1
It is inserted in the seal groove 10a formed in the peripheral portion of 0 and is fixed by a sealant 13 such as hot melt to seal the inside of the lamp chamber 12. Further, a plurality of stud pins 14 are provided upright on the back surface of the lamp body 10 and are used when the lamp is attached to a vehicle body (not shown).

The lamp chamber 12 in the lamp body 10 is divided into three lamp portions arranged in the left-right direction. In this embodiment, from the right side of FIG. 1, a high beam lamp (running lamp) HL and a low beam lamp ( Passing lamp) LL,
It is configured as a side marker lamp (clearance lamp) SL. The high beam lamp HL and the low beam lamp LL are provided on the back surface of the lamp body 10.
Has a large diameter light bulb insertion hole 15 at a position corresponding to the side marker lamp, and a small diameter light bulb insertion hole 15 at a position corresponding to the side marker lamp. Each light bulb insertion hole 15 has a light bulb 16H, 16L, 16S as described later. It is inserted and supported in the lamp chamber of each lamp section.

Further, a reflector 20 is disposed in the lamp chamber 12 so as to extend over each lamp portion of the high beam lamp HL and the low beam lamp LL, and the reflector 20 has each of the high beam lamp and the low beam lamp described above. 16H and 16L are held. That is, the reflector 20 has reflection surface portions 20H and 20L each having a substantially paraboloidal shape at positions corresponding to the high beam lamp HL and the low beam lamp LL, and these reflection surface portions 20H and 20L are adjacent to each other. It is integrally formed. In addition, each reflection surface portion 20H, 20L
The front surface of is coated or vapor-deposited with aluminum to form a light-reflecting surface. Then, the reflecting surface portions 20H, 20
In L, a socket insertion hole 21 is formed at the top on the back side, and a cylindrical socket attachment portion 22 is integrally provided facing the socket insertion hole 21.

As shown in FIG. 3 which is an enlarged sectional view taken along the line AA of FIG. 1, the light bulb socket 23 is inserted in the socket insertion hole 21.
(23H, 23L) is inserted and the socket mounting portion 2
It is fixed to 2 and the light bulb socket 23 holds the light bulb 16L in each of the reflecting surface portions 20L. The light bulb socket 23 is provided with a circular flange 23a, the circular flange 23a is brought into contact with the back surface of the socket mounting portion 22, and the fixing ring 24 is fitted into the socket mounting portion 22 from behind, The circular flange 23a is provided between the socket mounting portion 22 and the fixing ring 24.
The light bulb socket 23 holds the reflector 20
Fixed to. In this embodiment, the fixing ring 24 has lance-shaped engaging portions 24a formed at a plurality of circumferential positions, and the engaging portions 24a are provided on the same number of flange portions 22a provided on the periphery of the socket mounting portion 22, respectively. By engaging and disengaging, the light bulb socket 23 can be attached and detached. The rear portion of the light bulb socket 23 is configured as a connector portion 25 in which electrodes are bent by bending at a substantially right angle, and a connector connected to an electric cord (not shown) is fitted into the connector portion 25 to connect the light bulb socket. It is needless to say that the electric connection is made to 23 and the electric current is supplied to the light bulb 16L.

Further, a peripheral surface of the socket mounting portion 22,
In order to seal an annular gap formed between the lamp body 10 and the bulb insertion hole 15, a waterproof cover 30 made of rubber or resin in an annular plate shape is fitted. Figure 4
Is a perspective view in which a part of the waterproof cover 30 is cut away,
The inner edge portion 31 is formed into a thick-walled cylindrical shape having an inner diameter substantially equal to the outer diameter of the socket mounting portion 22, and a plurality of annular grooves 32 are formed on the inner peripheral surface thereof so as to be aligned in the axial direction. It is configured to be fitted to the peripheral surface of 22 with an elastic force. In addition, the middle band portion 33 is formed in a wavy cross-section,
The waterproof cover 30 is provided with flexibility in the thickness direction and the radial direction. Further, the outer edge portions 34 are both thickly formed on the inner diameter portion 3
5 and the outer diameter portion 36 are connected by a thin connecting portion 37 so as to have a U-shaped cross section, and a lance is formed on the outer peripheral surface of the inner diameter portion 35 over the entire circumference. It is configured as a stop 38. In addition, a plurality of annular grooves 39 are formed on the inner peripheral surface of the outer diameter portion 36 side by side in the axial direction.

The outer edge portion 34 is the lamp body 10.
It is fitted with an elastic force to an annular standing wall 17 provided on the periphery of the light bulb insertion hole 15. The standing wall 17 is integrally formed with an engaging projection 17a formed on the inner peripheral surface thereof, which is an annular projection directed in the inner diameter direction. The outer edge portion 34 is fitted so as to sandwich the standing wall 17 in a U-shaped gap formed by the inner diameter portion 35, the outer diameter portion 36, and the connecting portion 37. At this time, the standing wall 17 is fitted. On the outer peripheral surface of the outer diameter portion 3
The annular groove 39 of 6 is abutted, and the engaging portion 38 of the inner diameter portion 35 is engaged with the engaging protrusion 17 a provided on the inner peripheral surface of the standing wall 17. As a result, the inner edge portion 31 has improved contact with the peripheral surface of the socket attachment portion 22 due to the annular groove 32, and the waterproof effect thereof can be enhanced. Also, the outer diameter portion 3
The closeness between 6 and the standing wall 17 is enhanced, and the waterproof effect is enhanced. At this time, the engagement state of the outer edge portion 34 can be secured by the engagement of the locking portion 38 in the inner diameter portion 35 and the engagement protrusion 17a, and the reliability of the waterproof effect can be enhanced.

On the other hand, in the low-beam lamp LL whose sectional structure is shown in FIG. 3, as shown in FIG. 5 (a), which is a partially exploded perspective view of a main part, a reflector located directly above the held light bulb 16L. A pair of rails 26 are integrally formed on the reflecting surface portion 20L of 20 in the front-rear direction,
Moreover, the shade 40 is attached using the rail 26. The rails are formed on the upper surface of the reflector 20 so as to project downward in an L shape and an inverted L shape, respectively. In addition, the rail 26 on the rear surface of the reflector 20
A pair of slit openings 27 are provided side by side in the left-right direction at a location corresponding to the base of the.

The shade 40 is provided to prevent the light from the light bulb 16L from being directly irradiated to the front, and is constructed as a cap portion 41 for covering the front side of the light bulb with a metal material having high heat resistance. It Then, at the upper edge of the cap portion 41, a narrow plate-shaped connecting portion 4 is formed.
2 are integrally extended, the connecting portion 42 is extended upward, and the tip end portion on the upper side thereof is formed as the attaching portion 43 so as to be wide corresponding to the interval dimension of the rail 26. The attaching portion 43 is bent forward at a substantially right angle to the front end edge of the connecting portion 42 in an inverted L shape, and is then folded back at a slight distance from it, and further folded back. A pair of tongue pieces 44 are formed to project at the left and right positions of the tip edge. The minute interval of the folding back is approximately equal to the thickness of the rail, and the bent portion of the lower tip of the rail is sandwiched between the minute intervals. In addition, the width of the tongue piece 44 is the slit opening 27.
Of the slit opening 27, that is, slightly longer than the thickness of the back surface of the reflector 20.

Then, as shown in the assembled state in FIG. 5B, the folded-back portion of the attachment portion 43 is inserted between the rails 26 so that both sides of the attachment portion 43 are between the reflector 20 and the rail 26. It is held in a state of being sandwiched vertically. Then, the tongue piece 44 provided on the tip edge is inserted into the slit opening 27 of the reflector 20 so as to protrude toward the back surface side of the reflector 20, and the tongue piece 44 is further bent upward to bend the reflector 20.
The attachment portion 43 is prevented from being moved forward, and thus the attachment portion 43 is prevented from being detached from the rail 26 so that the shade 40 is held by the reflector 20. There is. The inner surface of the cap portion 41 is black in order to suppress reflection of light, and the surface of the portion extending from the cap portion 41 to the connecting portion 42 to the attachment portion 43 is coated or vapor-deposited with aluminum similarly to the reflector 20. The shade 40 and the reflector 20 are observed as a united body when the lamp is viewed from the outside.

By providing this shade 40, as shown in FIG. 3, of the light emitted from the light bulb 16L, it is prevented that the light is irradiated forward in the region covered with the cap portion 41. This prevents direct light from the light bulb 16L from being emitted through the lens 11. Therefore, only the light that is not blocked by the cap portion 41 is reflected forward in the optical axis direction on the parabolic surface of the reflecting surface portion 20L,
It will be irradiated through the lens 11. As a result, the irradiation of light above the horizontal optical axis is suppressed, and it functions as a so-called low-beam lamp that lights up when the vehicle passes each other.

Further, when the light bulb 16L is turned on, heat is generated, and the heat causes the cap portion 41 to be overheated. Further, this heat is further connected via the connecting portion 42 to the attaching portion 4
3 and the reflector 20 engaged with the attachment portion 43 may be overheated. However, since the connecting portion 42 is formed narrower here, the connecting portion 4
2 suppresses the amount of heat transferred and suppresses overheating of the attachment portion 43 and the reflector 20. In addition, a part of the heat that is transmitted to the attachment portion 43 through the connecting portion 42 is effective in the attachment portion 43 because the attachment portion 43 is formed wide and the heat radiation area is increased. To the reflector 2
Overheating of 0 is prevented.

A part of the heat generated by the light bulb 16L is
The radiation may overheat the region directly above the reflecting surface portion 20L of the reflector 20, but in this region the rail 26
Since the attachment portion 43 of the shade 40 made of a metal material supported by the wide area exists, the heat shielding effect of the attachment portion 43 avoids overheating due to direct radiation to the reflector 20. This prevents the reflector in the region directly above the bulb from being overheated by the heat of the bulb 16L, so that the reflector in this region is hardly thermally deteriorated, and the support strength of the shade 40 by the attachment portion 43 is increased. Shade 40 due to vehicle vibration or shock
Does not fall off the reflector 20. Further, this area of the reflector 20 is prevented from being damaged or deformed by heat, and the reflection characteristic of the light from the light bulb 16L is also prevented from being impaired.

Since the connecting portion 42 is formed to have a narrow width, there is almost no obstacle when the light from the light bulb 16L is reflected by the reflector 20 and radiated forward. Further, the attachment portion 43 is arranged on the upper surface of the reflector 20, and the tongue piece 44 for fixing the attachment portion 43 is arranged on the rear surface of the reflector 20. Therefore, screws or the like are not exposed on the reflection surface portion 20L. Is not exposed to the outside through the lens 11 and the appearance is not deteriorated. In addition to this, since the tongue piece 44 is bent and formed on the back surface side of the reflector 20, there is no risk of accidentally scratching the reflecting surface of the reflector during the work, and deterioration of the reflection efficiency and the light distribution characteristic can be prevented in advance. . Further, since both sides of the attachment portion 43 are held by the pair of rails 26, the shade 40 can be stably supported at a predetermined position, and the shading characteristics of the cap portion 41 can be stabilized. Becomes Furthermore, in order to prevent the heat deterioration of the reflector 20, there is no need for a heat shield plate which is a separate component from the shade 40, so that it is possible to prevent an increase in the number of components.

On the other hand, the reflector 20 is tilted vertically and horizontally in the lamp body 10 so that the optical axes of the light bulbs 16H and 16L of the attached beam lamps HL and LL can be adjusted. Supported as possible.
When viewed from the front of the headlamp shown in FIG. 1, a lower right position O on the rear surface of the reflector, an upper right position Y immediately above the rear surface, and a lower left position X arranged in the horizontal direction are shown in FIG. As described above, the brackets 50, 51, 52 each having a substantially L-shaped cross section are formed so as to project rearward. Then, as shown in FIG. 7A together with an enlarged cross-sectional view taken along the line BB of FIG. 1, a hole 51a is formed in the bent portion of the tip of the bracket 51 at the lower right position, and this hole 51a is formed.
A clip pin 61 is fitted into and supported by. The clip pin 61 is integrally formed with a clip portion 61a having a pair of clip pieces elastically deformable in the radial direction and a spherical portion 61b provided at the tip of the clip portion 61a.

By inserting the clip portion 61a into the hole 51a of the bracket 51, the clip piece is fitted to the inner edge of the hole 51a, and the clip pin 61 is fixedly supported by the bracket 51. Further, a pivot receiving portion 62 is integrally formed on the inner surface of the lamp body 10 at a position corresponding to the clip pin 61, and a spherical concave portion 62a formed in the pivot receiving portion 62 has a spherical portion of the clip pin 61. 61
b is inserted. The pivot receiving portion 62 is composed of a plurality of receiving pieces divided in the circumferential direction, and the spherical portions 61 b of the clip pin 61 are formed by elastically deforming each receiving piece in the radial direction.
Can be fitted into the pivot receiving portion 62. By fitting the clip pin 61 and the pivot receiving portion 62, the reflector 20 can be tilted vertically and horizontally with the spherical portion 61b as a fulcrum.

A hole 52a is formed in the bent portion of the tip of the bracket 52 at the upper right position, and a clip nut 63 is fitted and supported in the hole 52a. The clip nut 63 has a clip portion 63a having a pair of clip pieces that are elastically deformed in the radial direction, and a screw thread is formed in a shaft hole provided inside thereof to form a female thread 6a.
It is configured as 3b. Then, by inserting the clip portion 63a into the hole 52a of the bracket 52, the clip piece is fitted to the inner edge of the hole and the clip nut 63 is fixedly supported by the bracket 52. A through hole 64 is formed in the rear surface of the lamp body 10 at a position corresponding to the clip nut 63, and a vertical aiming bolt 65 is inserted into the through hole 64 from the rear surface side.

The upper and lower aiming bolts 65 are axially rotatably supported in a state in which they are prevented from being separated from the lamp body 10 by a snap washer 66 or the like fitted on the inner surface side of the lamp body 10 and have a screw portion 65a thereof. Is screwed onto the clip nut 63. Therefore, by axially manipulating the upper and lower aiming bolts 65 from the rear side of the lamp body 10, the clip nut 63 and the bracket 52, which are screwed into the upper and lower aiming bolts 65, are screwed in the axial direction of the upper and lower aiming bolts 65, and thereby the reflector. It is possible to tilt the 20 up and down in the vertical plane with the clip pin 61 as a fulcrum, and adjust the tilt angle.

Further, as shown in FIG. 7B together with an enlarged sectional view taken along line CC of FIG. 1, the bracket 5 at the lower left position is shown.
A hole 53a is also formed in 3, and a clip nut 67 is fitted and supported in this hole 53a. This clip nut 67
The configuration is the same as that of the clip nut 63, and the left and right aiming bolts 68 axially supported by the lamp body 10 by the snap washers or the like 66 are screwed into the clip nuts 67 in the same manner as the upper and lower aiming bolts 65. Therefore, by pivotally operating the left and right aiming bolts 68, the clip nuts 67 screwed to the bolts 67 are screwed.
Also, the bracket 53 is screwed in the axial direction of the left and right aiming bolts 68, whereby the reflector 20 can be tilted left and right in the horizontal plane with the clip pin 61 as a fulcrum, and the tilt angle can be adjusted. In the present embodiment, a scale plate 69 for confirming the axial movement amount of the left and right aiming bolts 68 is provided on the rear surface of the lamp body 10 in which the left and right aiming bolts 68 are arranged, and the left and right of the reflector 20 are provided. The reference position in the direction and the deviation amount thereof can be visually confirmed.

Further, as shown in FIG. 6, a stem 54 extends rearward along the optical axis of the reflector 20 at a portion of the reflector 20 close to the bracket 52. A level 55 is supported on the rear end of 54 by a holder and screws (not shown). This level 55 has been conventionally used, in which a colored liquid is put in a sealed glass tube which is arcuate and has a scale in the lengthwise direction, and the moving position of bubbles generated in a part thereof is calibrated. The tilting angle, that is, the tilting angle of the reflector 20 in the vertical direction is detected by reading. As shown in FIG. 8 which is an enlarged sectional view taken along the line DD of FIG. 1, a circular window 10b is opened in the lamp body 10 immediately above the position where the level 55 is installed, and the window 10b is transparent. The cap 56 is closed, and the level 55 can be observed from the outside of the lamp body 10 through the transparent cap 56.

Further, on the back surface of the lamp body 10, as shown in a perspective view in FIG. 9A and an enlarged vertical sectional view in FIG. 9B, in order to ventilate the inside and outside of the lamp body 10. Vent 70 is provided. The vent hole 70 has a cylindrical portion 71 protruding rearward from the rear surface of the lamp body 10,
Moreover, the inside of the cylindrical portion 71 is vertically divided by a partition plate portion 72 having a length shorter than that of the cylindrical portion. And the partition 7
In the upper space partitioned by 2, a window 73 for communicating the inside and outside of the lamp body 10 is opened in the lamp body 10, and the window 73 is provided at the center of the crosspiece 7.
4 as two quarter-arc windows. A filter 75 is inserted into the upper space to clean the air that permeates the windows 73. As the filter 75, a structure in which rubber fine particles are impregnated in synthetic resin fiber is used,
By adsorbing the pollutant particles contained in the exhaust gas of the automobile, it is possible to prevent these pollutant particles from entering the lamp body. The filter 75 is prevented from falling off inside the lamp body 10 through the window 73 by the crosspiece 74.

In the lower space defined by the partition plate portion 72, a slit 76 is provided by cutting a part of the circumference of the cylindrical portion 71 in the length direction. And the cylindrical portion 7
The first opening is covered with a cylindrical cap 77 to prevent the upper and lower partitioned spaces from being exposed to the outside through the opening of the cylindrical portion 71. Further, the cylindrical portion 7
A gate-shaped upper cover 78 is formed integrally with the back surface of the lamp body 10 at an upper portion of the first portion 1 so that water droplets from above do not directly adhere to the cylindrical portion 71. In addition, a lower roof-shaped cover 79 is integrally formed with the back surface of the lamp body 10 at a lower portion of the cylindrical portion 71 so that water droplets from below directly adhere to the cylindrical portion 71 or through the slit 76. It prevents from entering into 71.

By providing the vent hole 70, the inside and outside of the lamp chamber are ventilated, and water droplets are prevented from entering the lamp chamber, while dew condensation and the like in the lamp chamber are prevented. In this case, the air is ventilated through the window 73, the filter 75, and the slit 76. At this time, the partition wall 72 causes the window 73 and the slit 76.
Since it has a labyrinth structure, it effectively prevents water from entering the lamp body 10 from the slit 76 through the window 73. Further, at this time, the filter 75 also prevents contaminant particles from entering the lamp body 10.

On the other hand, an extension reflector 80 is disposed in the lamp chamber 12 defined by the lamp body 10 and the lens 11. As shown in the perspective view of FIG. 10, the extension reflector 80 is formed by integrally molding a resin and then coating or vapor-depositing aluminum on the surface thereof. Further, a mounting piece 81 is integrally projected on the lower surface, and a locking piece 82 is integrally projected on the upper surface.
Then, the extension reflector 80 is installed inside the lamp chamber 12 in the lamp body, and as shown in FIG.
The mounting piece 81 is fixed to the lens 11 with the screw 83, and the locking piece 82 is locked to the locking portion 11 b provided in a part of the lens 11, whereby the lens 11 is integrally attached.

The extension reflector 80 is
The portions 80H and 80L corresponding to the regions of the low beam lamp and the high beam lamp are provided in the entire area of the above-mentioned three lamps and are formed in a frame shape. These frame-shaped portions 80H and 80L are the reflectors 2
0 and the lens 11, and is arranged so as to cover the inner portion of the black lamp body 10 around the reflector 20 so that this portion is not exposed from the outside of the lamp through the lens 11. In this case, the extension reflector 80 has a shape such that the reflector 20 and the extension reflector 80 do not interfere with each other even when the reflector 20 is tilted vertically and horizontally by the aiming adjustment mechanism as described above.
The size and the arrangement position are set.

Further, a portion 80S corresponding to the area of the side marker lamp SL of the extension reflector 80.
2 is configured as a reflector 84 of the side marker lamp SL in this portion, as shown in FIG.
That is, in the side marker lamp SL, the extension reflector 80 is formed as a reflector 84 having a required light distribution characteristic, and a part 85 thereof serves as a partition wall portion for partitioning the adjacent low beam lamp LL. It is extended to a position close to the inner surface of the lens,
The other portion 86 extends along the inner surface of the lamp body 10. Then, a light bulb mounting hole 87 is opened in a part of the reflector 84 through the lamp body 10 and the reflector 84, and the light bulb socket 23S is attached thereto.
As the attachment structure, although not shown, for example, the light bulb mounting hole 87 is a bayonet hole, a bayonet piece is integrally provided in the light bulb socket 23S, and the light bulb socket 23S is connected to the light bulb socket 23S by engaging the bayonet hole and the bayonet piece. It is configured to be detachably attached to the mounting hole 87. The light bulb socket 23S supports the light bulb 16S in the side marker lamp portion.

In this structure, three lamps HL, LL,
Although the SL is integrated, one reflector 20 common to the high beam lamp HL and the low beam lamp LL, and one extension reflector 80 common to the reflector of the side marker lamp SL and the extension reflector of each lamp 80. As a result, it is possible to configure all the reflectors and extension reflectors of the headlight with two parts. Then, when the reflector 84 of the side marker lamp SL is assembled to the lamp body 10, this means that the extension reflector 80 is assembled to the lamp body 10.
Therefore, after that, each beam lamp HL, LL is simply
By assembling the common reflector 20 in the lamp body 10, the assembling of the respective reflectors 20 and 80 can be completed, and the assembling work can be simplified. Further, since the molding of the reflector 84 of the side marker lamp SL and the extension reflector 80, the aluminum coating, and the like are all performed at the same time, the number of manufacturing steps can be reduced and the manufacturing can be facilitated.

A plurality of ridges 85a having a sawtooth-shaped cross section are formed on the inner surface of the partition wall portion 85 which constitutes a part of the reflector 84 of the side marker lamp SL. 88 is formed. Then, a part of the light emitted from the light bulb 16S is partially reflected by the specific reflection portion 88.
Is configured to reflect toward a lens region corresponding to a so-called turn-in portion 11A of the lens 11, which is extended to the side, that is, the side portion of the vehicle body.

As a result, when the light bulb 16S is turned on, a part of the light emitted from the light bulb 16S is located at the side of the lens in the specific reflection portion 88, that is, the lens of the wrap-around portion located far from the light bulb 16S. The image is projected on the area 11A. Therefore, the temperature of the lens area 11A is raised by the light energy, and the temperature is prevented from being relatively lowered as compared with the other lens areas near the light bulb. The air in the room is cooled, and it is prevented that the lens is fogged due to dew condensation on the lens surface. As a result, the light transmission amount of the side marker lamp is not deteriorated due to dew condensation, and the light distribution characteristic thereof is not deteriorated, and the appearance of the lamp is not deteriorated.

In the above embodiment, the present invention is applied to the shade used for the low beam lamp, but the present invention can be applied to the shades used for other lamps. Also, the attachment part of the shade is supported by rails that are integrated with the reflector.However, parts corresponding to the rails are provided separately from the reflector, and these parts are attached to the reflector and attached to the shade. May be configured to support. Further, instead of the rail, a plurality of hook-shaped projections may be arranged and formed on the reflector, and the attachment portions may be supported by the reflector by these hook-shaped projections.

[0041]

As described above, according to the present invention, the narrow connecting portion is connected to the cap portion of the shade, and the attaching portion connected to the connecting portion is supported by the reflector, and at the attaching portion. Since the reflector that covers the part that faces the light bulb is covered, even if the shade is overheated by the heat generated by the light bulb, the connecting part is formed in a narrow width, so the heat immediately attaches to the attachment part of the tip part. It is possible to prevent the reflector from being deteriorated due to heat due to overheating of the attachment part, and it is possible to secure a highly reliable shade structure without deteriorating the support function of the shade. It will be possible.

Further, by forming the attachment portion provided at the tip of the attachment portion to be wide, the heat transferred from the cap portion to the attachment portion through the connecting portion has a large area of the attachment portion. Therefore, the heat dissipation effect is excellent, and while the reflector portion engaged with the attachment portion is prevented from overheating, the heat of the shade is radiated from the attachment portion and the shade is prevented from being overheated. Further, the attachment part shields the heat radiated from the light bulb and the shade to prevent the reflector from being overheated by the direct light from the light bulb, so that it is not necessary to provide a separate heat shield plate for the reflector. It is possible to prevent the reflector from overheating without increasing the number of points.

Further, the attachment part is inserted by inserting it into a pair of rails provided on the reflector, and the tongue piece provided on the attachment part is passed through the slit of the reflector and then caulked and fixed to the shade. By supporting the shade, it is possible to support the shade without the need for screws, etc., and it is possible to reduce the number of work steps and prevent the appearance of the lamp from being deteriorated due to the exposed screws. . Further, in this case, since the shade is fixed on the rear side of the reflector, there is no fear of damaging the reflecting surface of the reflector during the fixing work, and it is possible to prevent deterioration of the reflection efficiency and the light distribution characteristic. Furthermore, since both sides of the attachment portion are held by the rails, the shade can be stably supported at a predetermined position.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a vehicular lamp of the present invention.

FIG. 2 is a plan view in which a part of FIG. 1 is cut away.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partially cutaway perspective view of the waterproof cover.

FIG. 5 is a partially exploded perspective view of the shade and a perspective view of an assembled state.

FIG. 6 is a partially exploded perspective view of a main part of the back surface of the reflector.

FIG. 7 is an enlarged cross-sectional view taken along line BB and line CC of FIG.

FIG. 8 is an enlarged cross-sectional view taken along line DD of FIG.

FIG. 9 is a perspective view of a vent and an enlarged vertical sectional view thereof.

FIG. 10 is a perspective view of an extension reflector.

FIG. 11 is a vertical sectional view showing an example of a lamp having a conventional shade.

[Explanation of symbols]

 10 Lamp Body 11 Lens 20 Reflector 26 Rail 27 Slit Opening 30 Waterproof Cover 40 Shade 41 Cap Part 42 Connection Part 43 Attachment Part 44 Tongue 70 Vent 80 Extension Reflector

Claims (3)

[Claims] 1. A vehicle lamp including a shade for blocking a part of light emitted from a light bulb, wherein the shade extends upward from a cap portion that covers a portion of the light bulb. A connecting portion and an attaching portion formed by bending an upper end portion of the connecting portion are provided, and while supporting the shade by locking the attaching portion to a part of a resin reflector provided in the lamp, A vehicle lamp characterized in that the attachment portion covers a part of the reflector. 2. The connecting portion is formed to have a narrow width, the attaching portion is formed to have a width dimension larger than that of the connecting portion, and the attaching portion is inserted and supported between a pair of rails provided on the reflector. 1
Vehicle lights. 3. A reflector is provided by projecting a tongue piece on the attachment part, opening a slit into which the tongue piece is inserted, and inserting the tongue piece into the slit, and bending the tip end portion of the reflector. The vehicular lamp according to claim 2, which is locked to the.