JP2002008412A - Lamp equipment for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce thickness of a lamp equipment body and to reduce cost while quantity of irradiated light is increased when the lamp equipment body is shared with a lamp equipment of different function. SOLUTION: There are provided a lamp equipment body 1, a lens 2 which is attached to the lamp equipment body to constitute a lamp chamber, a bulb 5 provided in the lamp chamber, and a reflector 14 which is provided to the lamp equipment body 1 and reflects light coming from the bulb 5. The lamp equipment body 1 is provided with a reflector fitting opening part 13, and the reflector 14 is formed separately from the lamp equipment body 1 while an opening edge part 145 of the reflector 14 is so attached to the lamp equipment body 1 as to cover the inside perimeter of the reflector fitting opening part 13. By attaching the lamp equipment body 1 by selecting the reflector 14 according to light-distribution characteristics required for the lamp equipment, a lamp equipment of different function can be constituted. Even if the lamp equipment body 1 is shared with lamp equipments of different functions, the lamp equipment can be thinner while no resin material is wasted, for lower cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp used for vehicles such as automobiles, and more particularly to a vehicular lamp in which a plurality of lamps having different functions, such as lamps having different light distribution characteristics, share a lamp body. Lighting equipment.

[0002]

2. Description of the Related Art In a vehicular lamp such as an automobile, lamps having the same outer shape are sometimes configured as lamps having different functions. For example, since the outer shape of a lamp that can be installed at the rear of an automobile is determined by the design of the body of the automobile, the lamp may be configured as a backup lamp or a rear fog lamp in accordance with the determined outer shape. In such a case, in the past, in order to share the components of these lamps, in particular, to share the lamp body, a lamp body was designed for a backup lamp having a reflector that requires one light distribution characteristic, and another lamp was designed. In the case of configuring a rear fog lamp including a reflector that requires optical characteristics, a separate reflector configured as a separate component is provided inside the lamp body. That is, FIG. 8 is a diagram showing one example, and FIG. 8A is a cross-sectional view of a schematic configuration of a lamp body 801, a lens 802, and a bulb 803 as a light source when a backup lamp is configured. FIG. 8B is a cross-sectional view of a case where a rear fog lamp is formed using the lamp body 801. A separate reflector 304 and an inner lens 805 are provided inside the lamp body 801, and the bulb 803 is connected to the rear fog lamp. The emitted light is reflected by the reflector 804 and the light is controlled by the inner lens 805 so that required light distribution characteristics are obtained.

[0003]

In such a configuration,
Since a separate reflector 804 required for configuring the rear fog lamp must be provided inside the lamp body 801, the lamp body 801 needs to be formed large in advance with a margin. Therefore, as can be seen from FIG. 8, there is a problem that the dimension L in the front-rear direction of the lamp body 801 becomes unnecessarily large, and the entire lamp becomes thick. In this case, if the lamp body 801 is formed thin,
The size of the separate reflector 804 to be installed is reduced, and when the rear fog lamp is configured, the reflector 80
4, the reflection area is insufficient, which causes the brightness of the illumination to decrease. In addition, the heat resistance also decreases as the volume decreases. Further, when configured as a rear fog lamp, there is a part of the lamp body 801 that is functionally unnecessary behind the reflector 804, and the resin for forming the lamp body 801 in this part is wasted. This is an obstacle in reducing the manufacturing cost.

[0004] In view of such a problem, an object of the present invention is to provide:
It is an object of the present invention to provide a vehicular lamp in which, when a lamp body is shared by a plurality of lamps having different functions, the lamp body is made thinner, the cost is reduced, and the amount of illumination light is increased.

[0005]

SUMMARY OF THE INVENTION A vehicular lamp of the present invention comprises:
A lamp body, a lens attached to a lens mounting portion opened to the lamp body to form a lamp chamber, a light bulb disposed in the lamp chamber, and light emitted from the light bulb provided in the lamp body. A reflector for reflecting light, the lamp body is provided with a reflector mounting opening, the reflector is formed separately from the lamp body, and an opening edge of the reflector is formed inside the reflector mounting opening. It is characterized by being mounted on the lamp body so as to cover the periphery. Here, it is preferable that the reflector supports the light bulb and is formed of a material having higher heat resistance than the lamp body. Further, it is preferable that a front end edge of the opening edge of the reflector is positioned so as to protrude forward of the lamp from the reflector mounting opening. Further, it is preferable that the reflector includes an engagement means capable of engaging and supporting the inner lens.

According to the present invention, it is possible to configure lamps having different functions by selecting a reflector according to the light distribution characteristics required of the lamp and attaching the reflector to the lamp body, so that the lamp can be shared. In this case, the lamp can be made thinner and the cost can be reduced by eliminating waste of the resin material. In particular, in order to prevent damage due to heat generated in a light bulb, only the reflector can be formed of a resin having high heat resistance, so that further cost reduction can be achieved. In addition, since the reflector opening edge is located in front of the lamp, the entire inner surface of the reflector can be used as a reflection surface, the amount of illumination can be increased, and the reflector mounting opening is not exposed outside the lamp. The appearance appearance is improved.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment in which the present invention is configured as a backup lamp using a lamp LAMP mounted on the right rear portion of an automobile. FIG.
Is a sectional view taken along the line BB. FIG. 4 is a partially exploded perspective view as viewed from the front. In these figures, a lamp room 3 is formed by a lamp body 1 and a lens 2 attached to a lens mounting portion 1a opened to the front thereof. The lamp body 1 is formed as a reflective surface by depositing aluminum on its inner surface. The central region, which has a substantially circular shape when viewed from the front, is formed as an effective reflective surface portion 11 in a shape close to a hemisphere. Are formed in a flat dish shape as the dummy reflection surface portion 12. Further, the effective reflection surface portion 1
1, a socket mounting hole 111 is opened on the back surface,
A bulb socket 41 supporting a bulb (bulb) 4 for a backup lamp is detachable from the socket mounting hole 111. The structure of the valve socket 41 is as follows.
Since a conventional general-purpose valve socket is used as it is, a detailed description is omitted here. A boss 121 having a screw hole 122 is formed on a part of the rear surface of the dummy reflection surface portion 12 of the lamp body 1 so as to project toward the rear surface. The boss 121 is unnecessary when the lamp is configured as a backup lamp.

In this embodiment, the area of the lens 2 corresponding to the effective reflecting surface 11 is constituted by a pink lens 21, the area of the lens 2 corresponding to the dummy reflecting surface 12 is constituted by a red lens 22. , 22 are integrally joined. The lens 2 has a lens mounting portion 1a of the lamp body 1 at a peripheral portion 2a.
And integrated. The effective reflection surface portion 11 is provided with irregularities 112 for diffusing reflected light so as to obtain required light distribution characteristics. Further, a required step 123 is formed on the dummy reflection surface portion 12. Therefore, in such a configuration of the lamp LAMP,
The light emitted from the bulb 4 is reflected by the reflecting surface of the effective reflecting surface portion 11, passes through the pink lens 21, and is irradiated toward the rear of the vehicle, and functions as a backup lamp.

On the other hand, when the lamp LAMP is configured as a rear fog lamp using the lamp body,
Cross-sectional structures corresponding to the lines AA and BB in FIG. 1 are as shown in FIGS. FIG. 7 is a partially exploded perspective view seen from the front. When the rear fog lamp is configured as described above, the dummy reflecting surface portion 12 of the lamp body 1 shown in FIGS. 2 and 3 is shared, but the effective reflecting surface portion 11 is a lamp body. 1 is not integrally formed, and a reflector mounting opening 13 formed of a circular hole is provided in the area. A reflector 14 formed separately is fitted into the reflector mounting opening 13 to fit the lamp body 1.
Thus, the lamp body 1 is constituted by the dummy reflection surface portion 12 and the reflector 14.

That is, in the lamp body 1, the dummy reflecting surface portion 12 is formed by molding the effective reflecting surface portion 11 in a molding die for resin molding the lamp body 1 shown in FIGS. By performing resin molding with the nest inserted in the cavity portion, the area excluding the effective reflection surface portion 11, that is, only the dummy reflection surface portion 12, is resin-molded, and the reflector mounting opening 13 is formed in an area corresponding to the effective reflection surface portion 11. Is formed. Therefore, it is possible to form the dummy reflection surface portion 12 in the lamp body 1 of the rear fog lamp by using the mold for resin molding the lamp body 1 of the backup lamp shown in FIG. 1 as it is. .

The reflector 14 is resin-molded into a bowl shape in which the back surface 141 has a shape close to a paraboloid of revolution, and the peripheral surface 142 along the opening edge has a shape close to a cylindrical shape. It is formed as a reflective surface. Here, the reflector 14 is connected to the lamp body 1.
Are formed using a resin having higher heat resistance than the resin constituting the above. A socket mounting hole 143 is opened on one side of the back surface 141, and the bulb socket 51 supporting the bulb (bulb) 5 of the rear fog lamp is detachable in the socket mounting hole 143. In addition, a screw insertion hole 144 is formed at a tip of a part of the outer surface of the rear portion 141.
The bracket 144 is formed so as to protrude in the outer diameter direction.
2 is formed at a position corresponding to the boss 121 on the rear surface. On the other hand, the opening edge 145 of the peripheral edge 142 is larger in diameter than the peripheral edge 142 in the outer diameter direction, and the tip edge 145a is formed in a tapered shape. A plurality of lances 146 are formed on the outer surface of the enlarged opening edge portion 145 so as to increase in height in the rear direction at a plurality of circumferential positions, here three positions, and these lances 146 are formed. A plurality of stopper pieces 147 are formed at a plurality of positions in the circumferential direction with a small gap in the optical axis direction of the reflector 14 with respect to the lance 146. Further, in a region on the base end side of the opening edge portion 145, a part of the opening edge portion 145 is opened in a rectangular shape at three places in a circumferential direction different from the lance, and penetrates in an outer radial direction. A mating groove 148 is formed.

Therefore, when the reflector 14 is integrated with the lamp body 1, as shown in FIG.
When the opening edge 145 of the reflector 14 is inserted into the reflector mounting opening 13 from behind the lamp body 1, three lances 146 are fitted over the inner edge of the reflector mounting opening 13, and Stopper piece 1
47 contacts the inner edge of the reflector mounting opening 13. Therefore, the lance 146 and the stopper piece 14
7, the reflector mounting opening 13 is interposed therebetween, whereby the reflector 14 is fitted and attached to the lamp body 1. At this time, the opening edge 145 of the reflector 14
Are fitted in such a manner that the leading edge 145a of the rim projects forward from the reflector mounting opening 13. At the same time, the bracket 144 is connected to the boss 121 of the dummy reflection surface 12.
And the bracket 144 is attached to the boss 121.
By using the screws 6, the reflector 14 can be more firmly integrated with the lamp body 1 to form a lamp body as a rear fog lamp.

On the other hand, in the case of a rear fog lamp, a portion of the lens 2 facing the reflector 14 is constituted by a white lens 23, and is integrally joined with a red lens 22 facing the dummy reflection surface portion 12. Also, inside the lens 2, the opening edge 1 of the reflector 14
Inside 45, a red inner lens 7 is attached. The inner lens 7 is connected to the opening edge 1 of the reflector 14.
It is formed in a circular plate shape corresponding to the shape of 45, and a short sleeve portion 71 is integrally formed on the circumferential edge thereof, and three circumferential portions of the sleeve portion 71 are directed toward the front. A lance 72 protruding in the outer diameter direction is formed so as to be higher. As shown in FIG. 5, when the sleeve portion 71 of the inner lens 7 is fitted into the opening edge portion 145 from the front side of the reflector 14, the lances 72 of the sleeve portion 71 are positioned at three positions in the circumferential direction of the reflector 14. The inner lens 7 is engaged and supported by the reflector 14 by this engaging force. Therefore, in the lamp of this configuration, the light emitted from the bulb 5 is reflected by the reflecting surface of the reflector 14 and passes through the inner lens 7 to form the white lens 2.
By transmitting the light through 3, required diffusion is performed, and the light is radiated toward the rear of the automobile, and functions as a rear fog lamp.

As described above, in the lamp of this embodiment, when it is configured as a rear fog lamp, the dummy reflective surface portion 12 of the lamp body 1 when configured as a backup lamp is shared, but the effective reflective surface portion 11 is used. Is replaced with a reflector 14 formed separately. Therefore, it becomes possible to form the lamp body thinner as compared with a conventional configuration in which a reflector is provided inside the lamp body. In addition, a structure in which the reflector and the lamp body overlap doubly can be avoided, the resin material can be reduced, and the cost can be reduced. Further, when molding the dummy reflection surface portion 12 of the rear fog lamp with a resin, the molding die for resin-molding the lamp body 1 of the backup lamp can be used as it is, so that the cost of the mold is increased. Nothing.

In the above embodiment, the reflector 14
Since the bulb 5 is attached to the reflector 14 by using the bulb socket 51 in the socket attachment hole 143 provided in the light source, only the reflector 14 needs to be changed or replaced even when configuring a lamp having a different bulb mounting form. Can easily respond to design changes. In addition, since the resin forming the reflector 14 is formed of a resin having higher heat resistance than the resin forming the lamp body 1, a bulb such as a rear fog lamp that requires high brightness is used for the reflector. Even when attached, the reflector can be prevented from being damaged by heat. On the other hand,
It is not necessary to generally form the entire lamp body and the reflector with an expensive resin having high heat resistance, which is advantageous in realizing cost reduction. Furthermore, in the above-described embodiment, the front edge 145a of the opening edge 145 of the reflector 14 is configured to protrude forward of the lamp mounting opening 13 of the lamp body 1, so the inner surface area of the reflector 14, in other words, The area effectively functioning as a reflection surface can be increased, and brighter illumination can be realized. At the same time, the connection boundary between the lamp body 1 and the reflector 14 is not exposed to the outside through the lens 2, so that the external appearance of the lamp can be improved.

Here, as a configuration for fitting the reflector 14 to the reflector mounting opening 13 of the lamp body 1,
When a sufficient supporting strength can be obtained only by the lance 146, the supporting structure by screwing using the brat 144 and the boss 121 may be omitted, which is advantageous in reducing the number of parts and reducing the cost. become.

In the above-described embodiment, the lamp requiring a reflector may be constituted by a lamp other than the above-mentioned rear fog lamp, or the lamp not requiring the reflector may be constituted by a lamp other than the backup lamp. It goes without saying that it is good. When a lamp having a function different from that of the above-described embodiment is configured as described above, the light distribution characteristics required for the lamp may be satisfied by replacing the inner lens with a different one from the above-described embodiment. It is possible.

[0018]

As described above, according to the present invention, the lamp body is provided with the reflector mounting opening, the reflector is formed separately from the lamp body, and the opening edge of the reflector is formed in the reflector mounting opening. Since it is mounted on the lamp body so as to cover the inner circumference, it is possible to configure lamps with different functions by selecting a reflector according to the light distribution characteristics required for the lamp and attaching it to the lamp body. Become
Even when the lamp is shared, the thickness of the lamp can be reduced and the cost can be reduced by eliminating waste of the resin material. Further, in order to prevent damage due to heat generated in the light bulb, only the reflector can be formed of a resin having high heat resistance, so that further cost reduction can be achieved. Further, the front edge of the opening edge of the reflector projects forward of the lamp from the reflector mounting opening, so that the entire inner surface of the reflector can be effectively used as a reflecting surface, the amount of illumination can be increased, and the reflector mounting opening can be increased. The part is not exposed to the outside of the lamp, and the appearance can be improved.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along the line AA of FIG. 1 when the vehicle lamp of FIG. 1 is configured as a backup lamp.

FIG. 3 is a sectional view taken along the line BB of FIG. 1 when the vehicle lamp of FIG. 1 is configured as a backup lamp.

FIG. 4 is a partially exploded perspective view of a vehicle lamp (backup lamp).

FIG. 5 is a cross-sectional view taken along line AA of FIG. 1 when the vehicle lamp of FIG. 1 is configured as a rear fog lamp.

FIG. 6 is a sectional view taken along the line BB of FIG. 1 when the vehicle lamp of FIG. 1 is configured as a rear fog lamp.

FIG. 7 is a partially exploded perspective view of a vehicular lamp (rear fog lamp).

FIG. 8 is a cross-sectional view illustrating a schematic configuration of a conventional vehicle lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp body 1a Lens mounting part 2 Lens 3 Light room 4 Valve 5 Valve 6 Screw 7 Inner lens (red) 11 Effective reflection surface part 12 Dummy reflection surface part 13 Reflector mounting opening part 14 Reflector 21 Pink lens 22 Red lens 23 White lens 41 Valve 51 Valve 71 Sleeve part 72 Lance 121 Boss 141 Rear part 142 Peripheral part 143 Socket mounting hole 144 Bracket 145 Opening edge 145a Tip edge 146 Lance 147 Stopper piece 148 Engagement groove

Claims (4)

[Claims] 1. A lamp body, a lens attached to a lens mounting portion opened in the lamp body to form a lamp chamber, a light bulb disposed in the lamp chamber, and a lamp body provided in the lamp body. A reflector for reflecting light emitted from the light bulb, wherein the lamp body is provided with a reflector mounting opening, and the reflector is formed separately from the lamp body, and an opening of the reflector is provided. A vehicular lamp, wherein an edge portion is mounted on the lamp body so as to cover an inner periphery of the reflector mounting opening. 2. The vehicular lamp according to claim 1, wherein the reflector supports the bulb and is made of a material having higher heat resistance than the lamp body. 3. A front edge of an opening edge of the reflector,
The vehicular lamp according to claim 1, wherein the vehicular lamp is protruded forward of the lamp with respect to the reflector mounting opening. 4. The vehicular lamp according to claim 1, wherein the reflector includes an engagement means capable of engaging and supporting the inner lens.