JP2010080363A - Vehicle lamp - Google Patents

Abstract

To provide a vehicular lamp capable of reducing the cost by using a common housing.
A vehicle lighting device in which a separate additional device can be attached to a housing and a core extending from the additional device is connected to a light source in the housing through a hole formed in the housing. 1, a cover 8 covering the hole 7 formed in the housing 2 can be attached to the housing 2 instead of the additional device, and a cord 9 for supplying power to the light source 3 from a power source is attached to the cover 8 from the cover 8. It is configured to be pulled into the housing 2. The cover 8 has a plurality of reinforcing ribs 8B (a plurality of annular ribs concentrically formed around the circular hole 10 formed in the cover 8 and a plurality of radial ribs extending radially outward from the circular hole 10. A straight rib).
[Selection] Figure 2

Description

  The present invention relates to a vehicular lamp capable of mounting a separate additional device on a housing.

  Some vehicle lamps such as headlights use a discharge lamp such as a metal halide lamp as a light source. However, such a discharge lamp has a high voltage (eg, several thousand) which is not comparable to an incandescent bulb especially at the time of startup. Since application of V) is necessary, a separate additional device such as a startup / lighting circuit is detachably attached to the housing (see, for example, Patent Documents 1 and 2). An example of the configuration is shown in FIG.

  That is, FIG. 6 is a side sectional view of the lower part of a conventional vehicular lamp. As shown in FIG. 6, the housing 2 of the vehicular lamp 1 ′ such as a headlight has a separate addition device 20 at the bottom. Removably attached. Here, the additional device 20 is configured by housing an internal circuit 22 in a case 21. A circular hole 7 is formed in the bottom wall of the housing 2, and a plurality of bosses 2 </ b> A project integrally downward around the circular hole 7 on the bottom surface of the housing 2.

Thus, the additional device 20 is attached to the bottom of the housing 2 by screwing a screw 12 inserted into the bracket 21A formed integrally with the periphery of the case 21 from below into the boss 2A protruding from the housing 2. The cord 23 extending from the internal circuit 22 of the additional device 20 is drawn into the housing 2 through a circular hole 7 formed in the housing 2, and its end is connected to a discharge lamp (not shown). Yes. A ring-shaped gasket 24 is interposed between the circular hole 7 formed in the housing 2 and the case 21 of the additional device 20, and the circular hole 7 is hermetically sealed by the gasket 24.
JP 2000-090711 A JP 2000-235810 A

  Incidentally, in the vehicular lamp 1 ′ using a discharge lamp as a light source as shown in FIG. 6, a separate additional device 20 is mounted on the housing 2, and a cord 23 extending from the additional device 20 is drawn into the housing 2. A circular hole 7 is formed in the housing 2, and the vehicle lamp 1 using the incandescent bulb other than the discharge lamp as a light source, that is, the additional device 20 is mounted on the housing 2. If it can be shared with the housing of the vehicular lamp that does not need to be done, a great cost advantage can be obtained.

  The present invention has been made on the basis of the above-mentioned viewpoint, and an object of the present invention is to provide a vehicular lamp that can reduce the cost by using a common housing.

  To achieve the above object, according to the present invention, a separate additional device can be mounted on the housing, and a core extending from the additional device is connected to a light source in the housing through a hole formed in the housing. In this vehicular lamp, a cover for covering the hole formed in the housing can be attached to the housing instead of the additional device, and a cord for supplying power from the power source to the light source is provided from the cover to the housing. It is characterized in that it is configured to be pulled in.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, a plurality of reinforcing ribs are formed on the cover.

  According to a third aspect of the present invention, in the invention of the second aspect, the reinforcing rib includes an annular rib formed concentrically around a circular hole formed in the cover so as to pass the cord. It is characterized by including a plurality of linear ribs extending radially outward from the circular hole.

  According to the first aspect of the present invention, when the housing of the vehicular lamp with an additional device that uses a discharge lamp as the light source is used for the vehicular lamp that uses a light source other than the discharge lamp, the hole formed in the housing. The cover for covering can be attached to the housing in place of the additional device, and a cord for supplying power from the power source to the light source can be drawn into the housing from the cover using a hole formed in the housing. Therefore, the housing of the vehicle lamp with an additional device that uses a discharge lamp as the light source can be shared with the vehicle lamp using a light source other than the discharge lamp, and the cost of the vehicle lamp can be reduced by using common parts. Can do.

  According to the second and third aspects of the present invention, the hole opening in the housing is closed by the cover, and the strength and rigidity of the cover are enhanced by the reinforcing rib. Is prevented by.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a partial bottom view of a vehicular lamp according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is an exploded perspective view of the bottom of the vehicular lamp, and FIG. FIG. 5 is a plan view of the outer surface side of the cover.

  The vehicular lamp 1 according to the present embodiment is a headlight, and as shown in FIG. 2, an incandescent light other than a discharge lamp is placed inside a resin housing 2 whose front surface (the left side in FIG. 2 is the front) is opened. A light source 3 such as a light bulb or a halogen lamp, a reflector 4 that reflects light emitted from the light source 3 forward, a shade 5 that shields part of the light reflected by the reflector 4, and the like are accommodated. The front opening of the housing 2 is covered with a transparent lens 6.

  The vehicular lamp 1 according to the present embodiment uses an incandescent bulb, a halogen lamp, or the like other than the discharge lamp as the light source 3 as described above, and the housing 2 has an additional device as shown in FIG. In the present embodiment, the housing 2 used in the vehicular lamp 1 ′ shown in FIG. 6 is shared as a housing 2 in order to share parts.

  Therefore, a circular hole 7 (circular hole for passing the cord 23 extending from the additional device 20 shown in FIG. 6) is formed in the bottom wall of the housing 2 as shown in FIGS. A cylindrical boss 2A is integrally protruded downward (upward in FIG. 3) at these three locations. As shown in FIG. 3, a plurality of reinforcing ribs 2B are integrally formed in a lattice pattern around the circular hole 7 on the bottom surface of the housing 2, and the peripheral portion of the circular hole 7 in the housing 2 is the reinforcing rib 2B. Increases strength and rigidity.

  Thus, in the present embodiment, the cover 2 having a substantially rectangular plate shape shown in FIGS. 4 and 5 is detachably attached to the bottom surface of the housing 2 in place of the additional device 20 shown in FIG. The circular hole 7 opened in the bottom wall of the battery is covered with a cover 8 and a cord 9 for supplying power to the light source 3 from a power source (battery) (not shown) is drawn into the housing 2 from the cover 8. .

  The cover 8 is an integrally molded product of a resin such as PBT / PET, and a circular hole 10 is formed in the center thereof, and the surrounding three locations (the boss 2A protruding from the housing 2 (see FIG. 3)). Brackets 8A are integrally formed at three corresponding locations, and circular bracket-shaped screw insertion holes 8a are respectively provided through the brackets 8A. A plurality of reinforcing ribs 8B are provided around the circular hole 10 on the outer surface of the cover 8 (the surface facing the outer side (lower side) when the cover 8 is attached to the housing 2 as shown in FIGS. 1 and 2). As shown in FIGS. 2 and 4, a plurality of triangular reinforcing ribs 8b whose height increases toward the outside are formed on the inner peripheral surface of the circular hole 10 in the circumferential direction. Projected integrally at intervals.

  Here, the reinforcing rib 8B formed around the circular hole 10 on the outer surface of the cover 8 is an annular shape formed concentrically around the circular hole 10, as shown in FIGS. The rib 8c and a plurality of linear ribs 8d extending radially outward from the circular hole 10 are formed, and the strength and rigidity around the circular hole 10 of the cover 8 are increased by the reinforcing rib 8B. Has been enhanced. Further, the circular hole 10 formed in the center portion of the cover 8 is reinforced by a plurality of reinforcing ribs 8b that are integrally projected on the inner peripheral surface thereof.

  On the other hand, as shown in FIG. 4, the inner surface of the cover 8 (the surface facing the inner side (upper side) when the cover 8 is attached to the housing 2 as shown in FIGS. 1 and 2) An annular groove 10e is formed concentrically. Further, as shown in FIGS. 4 and 5, a pair of left and right projecting pieces 8C reinforced by triangular ribs 8f are integrally projected on one side surface of the cover 8, and sandwiched between these projecting pieces 8C. A rectangular notch 8D is formed in the portion to be cut. Further, a horizontally extending engagement piece 8E is integrally projected at the base end portion of the notch 8D.

  Thus, as shown in FIG. 2, the cover 8 has a ring-shaped gasket 11 fitted in the annular groove 8 e (see FIG. 4) formed on the inner surface thereof, and the gasket 11 is attached to the bottom surface of the housing 2. It is pressed against the bottom surface of the housing 2 in a state where the position is adjusted so as to contact the peripheral edge of the circular hole 7. At this time, the center of the circular hole 10 of the cover 8 and the circular hole 7 of the housing 2 coincide with each other, and both communicate with each other. While maintaining this state, the screws 12 are passed from below through the screw insertion holes 8a of the three brackets 8A protruding around the cover 8, and the screws 12 are protruded from the housing 2 to the boss 2A. The cover 8 is attached to the bottom of the housing 2 as shown in FIGS.

  By the way, the cord 9 for supplying power to the light source 3 from a power source (battery) (not shown) is formed by bundling two lead wires 9a as shown in FIG. 3, and is connected to one end of each lead wire 9a. The connectors 13 and 14 are attached to each other, and the coupler 15 is attached to the other end. Further, a grommet 16 made of an elastic material such as rubber is passed through the cord 9.

  Thus, the cord 9 is drawn into the inside of the housing 2 through the circular hole 10 formed in the cover 8 and the circular hole 7 formed in the housing 2, and the grommet 16 inserted therethrough is inserted into the grommet 16. The cover 8 is held by the cover 8 by being fitted into the circular hole 10, and the through portion to the cover 8 is sealed by the grommet 16. The coupler 15 attached to one end of the cord 9 extending outside the cover 8 is fitted into the notch 8D (see FIGS. 4 and 5) formed in the cover 8, and is formed in the notch 8D. It is attached to the cover 8 by being inserted into the engaging piece 8E. Further, the connectors 13 and 14 attached to the lead wires 9a of the portion of the cord 9 drawn into the housing 2 are respectively inserted into terminals 18 and 19 provided in the socket 17 shown in FIG. 3 is electrically connected (see FIG. 2). This eliminates the need for mold correction such as providing a boss for newly attaching the coupler 15 on the housing 2 side, and the housing 2 can be shared. In addition, since the coupler 15 is integrated with the cover 8, the assembling property is improved without the coupler 15 becoming an obstacle when the cover 8 is detached. The coupler 15 can be supplied with power from the power source (battery) to the light source 3 by inserting a plug (not shown) attached to the end of a cord extending from the power source (battery) (not shown). Become.

  As described above, in the present embodiment, the housing 2 of the vehicular lamp 1 ′ with the additional device 20 shown in FIG. 6 that uses a discharge lamp as the light source is used for the vehicular lamp 1 that uses a light source 3 other than the discharge lamp. In this case, the cover 8 covering the hole 7 formed in the housing 2 can be attached to the housing 2 in place of the additional device 20, and a cord 9 for supplying power from the power source (battery) to the light source 3 is provided in the housing 2. The cover 7 is pulled into the housing 2 using the holes 7 formed in the above. Therefore, the housing 2 of the vehicular lamp 1 ′ shown in FIG. 6 with the additional device 20 that uses a discharge lamp as a light source can be shared with the vehicular lamp 1 having a light source 3 other than the discharge lamp, and common parts are used. Thus, the cost of the vehicular lamp 1 can be reduced.

  In the present embodiment, the circular hole 7 opening in the housing 2 is closed by the cover 8, and the strength and rigidity of the cover 8 are enhanced by the reinforcing rib 8B. Also, the effect that the lowering of rigidity is prevented by the cover 8 can be obtained.

  In the above, the embodiment in which the present invention is applied to the headlight of a vehicle has been described. However, the present invention is naturally applicable to other arbitrary vehicle lamps such as a fog lamp. .

It is a partial bottom view of the vehicular lamp according to the present invention. It is the sectional view on the AA line of FIG. It is a disassembled perspective view of the vehicle lamp bottom part which concerns on this invention. It is the perspective view which looked at the cover from the inner surface side. It is a top view of the outer surface side of a cover. It is a sectional side view of the lower part of a vehicle lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Housing 2A Housing boss 2B Housing reinforcing rib 3 Light source 4 Reflector 5 Shade 6 Lens 7 Housing circular hole 8 Cover 8A Cover bracket 8B Cover reinforcing rib 8C Cover protrusion 8D Cover cut Notch 8E Cover engagement piece 8a Bracket screw insertion hole 8b Cover reinforcement rib 8c Cover annular rib 8d Cover linear rib 8e Cover annular groove 8f Cover triangle rib 9 Cord 10 Cover circular hole 11 Gasket 12 Screw 13, 14 Connector 15 Coupler 16 Grommet 17 Socket 18, 19 Terminal

Claims (3)

In a vehicle lamp, wherein a separate additional device can be attached to the housing, and a core extending from the additional device is connected to a light source in the housing through a hole formed in the housing.
A cover for covering the hole formed in the housing can be attached to the housing instead of the additional device, and a cord for supplying power from a power source to the light source is drawn into the housing from the cover. A vehicular lamp.   The vehicular lamp according to claim 1, wherein a plurality of reinforcing ribs are formed on the cover. The reinforcing rib includes an annular rib formed concentrically around a circular hole formed in the cover for passing the cord, and a plurality of straight lines extending radially outward from the circular hole. The vehicular lamp according to claim 2, comprising a rib.

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