JP5343559B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that can be downsized by a configuration in which a pair of beam units are arranged adjacent to each other in the vertical direction.

  In recent vehicle lamps, a configuration in which a pair of beam units are arranged adjacent to each other in the vertical direction is employed. As a conventional vehicular lamp that employs such a configuration, a technique described in Patent Document 1 is known.

JP 2002-343109 A

  Here, in the above configuration, the height of the lamp is increased because the reflector of the beam unit arranged in the upper stage and the reflector of the beam unit arranged in the lower stage are arranged in the vertical direction. There are challenges.

  Accordingly, the present invention has been made in view of the above, and an object of the present invention is to provide a vehicular lamp that can reduce the size of the lamp with a configuration in which a pair of beam units are arranged adjacent to each other in the vertical direction. .

To achieve the above object, a vehicular lamp according to the present invention is a vehicular lamp in which a pair of beam units are arranged adjacent to each other in the vertical direction, and the beam unit arranged in the upper stage is a light source. and has a certain upper valve, have a lower valve the beam units arranged in the lower part is a light source, the ancillaries the upper valve and the lower valve is bent substantially at a right angle with respect to the optical axis of the lamp A plurality of upper reflectors, each of which is provided on the back surface and arranged so that the bending direction of the accessory part is inclined with respect to the vertical direction of the lamp, and the beam unit arranged in the upper stage constitutes the reflecting surface of the upper bulb. And the beam unit disposed in the lower stage has a plurality of lower reflectors constituting the reflecting surface of the lower bulb, and the upper valve And when at least one of the lower bulbs has a shadow in the irradiation light, the upper bulb is arranged such that the shadow of the lead wire and the boundary portions of the plurality of upper reflectors coincide with each other. In addition, the lower valve is arranged such that the shadow position of the lead wire and the boundary portions of the plurality of lower reflectors coincide with each other.

In this vehicular lamp, the upper and lower valves are arranged with the bending direction of the accessory parts on the back side inclined with respect to the vertical direction of the lamp, so the upper valve accessory parts and the lower valve accessory parts on the rear side of the lamp Interference is suppressed. Therefore, the upper bulb 21 and the lower bulb 31 can be arranged narrowed in the lamp height direction. Thereby, there exists an advantage which can make the height (width | variety of an up-down direction) of a lamp small.
In addition, the vehicular lamp has an advantage that the appearance of the lamp is improved because the shadow of the lead wire is not conspicuous from the outside. In addition, there is an advantage that light loss due to the lead wire is reduced and the light distribution performance of the lamp is improved.

  Further, in the vehicular lamp according to the present invention, the beam unit disposed in the upper stage includes an upper main reflector that constitutes the left and right reflecting surfaces of the upper bulb, and an upper stage that constitutes the upper reflecting surface of the upper bulb. A lower main reflector having a sub-reflector and the beam unit disposed in the lower stage constituting the left and right reflecting surfaces of the lower bulb, and a lower sub-reflector constituting the lower reflecting surface of the lower bulb And the focal length Fh of the upper main reflector and the focal length Fh ′ of the upper sub-reflector have a relationship of Fh> Fh ′, and the focal length Fl of the lower main reflector and the focal length Fl The focal length Fl ′ of the lower sub-reflector has a relationship of Fl> Fl ′.

  In this vehicle lamp, (1) the focal length Fh ′ of the upper sub-reflector disposed above the upper bulb is set shorter than the focal length Fh of the upper main reflector (Fh> Fh ′). In such a configuration, since the upper sub-reflector is positioned in front of the lamp relative to the upper main reflector, the height of the lamp is higher than that of the configuration in which the upper main reflector and the upper sub-reflector have the same focal length. Reduced. (2) The focal length Fl 'of the lower sub-reflector disposed below the lower valve is set shorter than the focal length Fl of the lower main reflector (Fl> Fl'). In such a configuration, since the lower sub-reflector is positioned in front of the lamp relative to the lower main reflector, the lamp height is lower than that in the configuration in which the lower sub-reflector and the lower main reflector have the same focal length. Reduced. Accordingly, there is an advantage that the lamp can be reduced in size in the configuration in which the pair of beam units are arranged adjacent to each other in the vertical direction.

  In the vehicular lamp according to the present invention, the upper valve and the lower valve are arranged with the bending direction of the accessory part on the back side inclined with respect to the vertical direction of the lamp, so the accessory part of the upper valve and the lower valve on the back side of the lamp Interference with accessory parts is suppressed. Therefore, the upper bulb 21 and the lower bulb 31 can be arranged narrowed in the lamp height direction. Thereby, there exists an advantage which can make the height (width of an up-down direction) of a lamp small.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. Further, the constituent elements of this embodiment include those that can be replaced while maintaining the identity of the invention and that are obvious for replacement. In addition, a plurality of modifications described in this embodiment can be arbitrarily combined within a range obvious to those skilled in the art.

  1 and 2 are a front perspective view (FIG. 1) and a rear view (FIG. 2) showing a vehicular lamp according to an embodiment of the present invention. FIG. 3 is an explanatory view showing the operation of the vehicular lamp described in FIG. 4 and 5 are explanatory views showing a modification of the vehicular lamp described in FIG. FIG. 6 is an explanatory diagram showing a configuration of a general valve. FIG. 7 is an explanatory view showing a modification of the vehicle lamp group shown in FIG.

[Vehicle lamp]
This vehicular lamp 1 is applied to a headlamp of a vehicle, for example. The vehicular lamp 1 has an upper beam unit 2 and a lower beam unit 3, and these beam units 2 and 3 are arranged adjacent to each other in the vertical direction (see FIGS. 1 and 2). ). For example, in this embodiment, the upper beam unit 2 is arranged vertically adjacent to the lower beam unit 3 in the vehicle installation state of the lamp. Thus, the upper beam unit 2 constitutes a beam unit for low beam (for traveling beam), and the lower beam unit 3 constitutes a beam unit for high beam (for passing beam). In this embodiment, when the pair of beam units 2 and 3 are arranged adjacent to each other, the side on which the upper beam unit 2 is arranged is called “upper”, and the lower beam unit 3 is arranged. This side is called “downward”. In addition, the direction orthogonal to the vertical direction in the front view of the lamp is referred to as “left and right”.

  The upper beam unit 2 includes an upper valve 21, a shade 22, an upper main reflector 23, and a pair of upper sub reflectors 24 and 25 (see FIGS. 1 and 2). The upper bulb 21 is a light source of the upper beam unit 2 and is composed of, for example, a halogen lamp. The upper stage valve 21 is inserted into an insertion opening opened substantially at the center of the upper stage beam unit 2 (upper stage main reflector 23), and is fixed to the back surface of the upper stage main reflector 23 via a valve holder 211. The shade 22 is attached to the upper bulb 21 and blocks a part of the light from the upper bulb 21. The upper main reflector 23 is disposed behind the upper bulb 21 and constitutes a reflection surface for reflecting light from the upper bulb 21 forward of the lamp. The upper main reflector 23 particularly constitutes the left and right (left and right in the lamp width direction) reflecting surfaces of the upper bulb 21. The upper stage sub-reflectors 24 and 25 are respectively disposed above and below the upper stage bulb 21 and reflect light from the upper stage bulb 21 forward of the lamp. The reflecting surfaces of the upper sub-reflectors 24 and 25 are free-form surfaces based on a paraboloid, and constitute the basic paraboloid of the reflecting surface of the upper beam unit 2.

  The lower beam unit 3 includes a lower valve 31, a lower main reflector 32, and a pair of lower sub reflectors 33 and 34, and is disposed in the lower stage of the upper beam unit 2 (FIGS. 1 and 2). reference). The lower bulb 31 is a light source of the lower beam unit 3, and is constituted by, for example, a halogen lamp. The lower bulb 31 is inserted into an insertion opening opened substantially at the center of the lower beam unit 3 (lower main reflector 32), and is fixed to the back surface of the lower main reflector 34 via the valve holder 311. The lower main reflector 32 is disposed behind the lower bulb 31 and reflects light from the lower bulb 31 forward of the lamp. The lower main reflector 32 particularly constitutes the left and right reflecting surfaces of the lower valve 31. In this embodiment, the lower main reflector 32 and the upper main reflector 23 are integrally formed. The pair of lower stage sub-reflectors 33 and 34 are respectively disposed below and below the lower stage bulb 31 and reflect light from the lower stage bulb 31 forward of the lamp. The reflecting surfaces of the lower sub-reflectors 33 and 34 are free-form surfaces based on a paraboloid, and constitute a basic paraboloid of the reflecting surface of the lower beam unit 3.

  In this embodiment, for example, the upper beam unit 2 is used as a low beam (traveling beam) when the vehicle is traveling (see FIG. 3). Further, in addition to the basic light distribution pattern X by the upper main reflector 23, an additional light distribution pattern Y by the upper sub reflector 24 is formed. Further, an additional light distribution pattern Y is added in the traveling direction of the vehicle. Thereby, for example, the light distribution performance of the lamp relating to night visibility is improved.

[Valve mounting structure]
Further, in the vehicular lamp 1, the upper bulb 21 of the upper beam unit 2 and the lower bulb 31 of the lower beam unit 3 have accessory parts bent at substantially right angles with respect to the optical axis direction of the lamp, on the back portion. (See FIG. 2). At this time, each valve | bulb 21 and 31 is arrange | positioned by making the bending direction of an accessory component each incline with respect to the up-down direction of a lamp.

  For example, in this embodiment, the upper bulb 21 and the lower bulb 31 are made of a halogen lamp, and sockets 212 and 312 are attached to the back surface portions as accessory parts (see FIG. 2). The sockets 212 and 312 extend in a direction orthogonal to the axial direction of the valves 21 and 31. For this reason, the sockets 212 and 312 extend in a direction orthogonal to the optical axis direction of the lamp when the upper bulb 21 and the lower bulb 31 are attached. At this time, the sockets 212 and 312 are arranged with the extending direction inclined with respect to the vertical direction (height direction) of the lamp. Specifically, the sockets 212 and 312 are disposed so as to be inclined at the same direction and the same inclination angle with respect to the vertical direction of the lamp when viewed from the rear side of the lamp. However, the present invention is not limited to this, and the sockets 212 and 312 may be arranged to be inclined in different directions with respect to the vertical direction of the lamp.

  For example, in the configuration in which the bulb is made of a halogen lamp, the bulb connector or socket corresponds to the bulb accessory (see FIG. 2). Further, the present invention is not limited to this, and the valve and the accessory part may have an integral structure (not shown).

[effect]
For example, in a configuration in which the upper and lower bulbs are arranged with the bending direction of the accessory parts on the back facing the vertical direction of the lamp (not shown), the accessory parts (for example, connectors or sockets) of each bulb interfere with each other. To do. Then, a large installation space is required between the upper beam unit and the lower beam unit. In this respect, in this vehicle lamp 1, the upper bulb 21 and the lower bulb 31 are arranged with the bending direction of the accessory parts on the back side inclined with respect to the vertical direction of the lamp, so that the upper bulb is attached to the back side of the lamp. Interference between the parts and the attached parts of the lower valve is suppressed. Furthermore, the upper stage bulb 21 and the lower stage bulb 31 can be arranged narrowed in the height direction of the lamp. Thereby, there exists an advantage which can make the height (width | variety of an up-down direction) of a lamp small.

[Modification]
In the vehicle lamp 1, as described above, the upper beam unit 2 includes a plurality of upper reflectors (upper main reflector 23 and upper sub reflector 24) that constitute the reflecting surface of the upper bulb 21. The lower beam unit 3 includes a plurality of lower reflectors (lower main reflector 32 and lower sub reflectors 33 and 34) that constitute the reflecting surface of the lower bulb 31 (see FIG. 1).

  Here, the general valve | bulb 10 has the lead wire 12 for electrically connecting with the filament 11 inside (refer FIG. 6). Since the lead wire 12 causes a shadow on the irradiation light of the bulb 10, there is a problem that the appearance of the lamp is deteriorated.

  Therefore, in the vehicular lamp 1, it is preferable that the upper bulb 21 is arranged so that the shadow position of the lead wire coincides with the boundary portions of the plurality of upper reflectors 23 and 24 (see FIG. 5). Moreover, it is preferable that the lower valve | bulb 31 arrange | positions the position of the shadow of a lead wire, and the boundary part of the several lower reflectors 32-34 correspond. Such a configuration has an advantage that the appearance of the lamp is improved because the shadow of the lead wire is not conspicuous from the outside. In addition, there is an advantage that light loss due to the lead wire is reduced and the light distribution performance of the lamp is improved.

  In this vehicular lamp 1, (1) the focal length Fh ′ of the upper sub-reflector 24 disposed above the upper bulb 21 is set shorter than the focal length Fh of the upper main reflector 23 (Fh> Fh ′). In such a configuration, the upper sub-reflector 24 is positioned in front of the lamp relative to the upper main reflector 23. Therefore, the upper sub-reflector 24 and the upper sub-reflector have the same focal length. Is reduced. Further, (2) the focal length Fl ′ of the lower sub-reflector 33 disposed below the lower valve 31 is preferably set shorter than the focal length Fl of the lower main reflector 32 (Fl> Fl ′). In such a configuration, the lower sub-reflector 33 is positioned in front of the lamp with respect to the lower main reflector 32, so that the lower main reflector and the lower sub-reflector have a higher focal length than the configuration having the same focal length. Is reduced. Accordingly, there is an advantage that the lamp can be downsized in the configuration in which the pair of beam units 2 and 3 are arranged adjacent to each other in the vertical direction.

  For example, in this embodiment, the upper sub-reflector 24 is disposed above the upper valve 21 and substantially at the center of the reflecting surface of the upper main reflector 23 (see FIG. 1). The reflection surface of the upper sub-reflector 24 is a free-form surface based on a paraboloid, and constitutes the basic paraboloid of the reflection surface of the upper beam unit 2. Further, the focal length Fh of the upper main reflector 23 and the focal length Fh ′ of the upper sub reflector 24 are set to a predetermined relationship (Fh> Fh ′). Thereby, the reflective surface of the upper sub-reflector 24 is disposed so as to protrude forward of the lamp relative to the reflective surface of the upper main reflector 23 (see FIG. 7). At this time, the rear surface of the upper sub-reflector 24 is positioned in front of the lamp relative to the rear surface of the upper main reflector 23.

  Similarly, a lower sub-reflector 33 is disposed below the lower valve 31 and substantially at the center of the reflecting surface of the lower main reflector 32 (see FIG. 1). The reflection surface of the lower sub-reflector 33 is a free-form surface based on a paraboloid, and constitutes the basic paraboloid of the reflection surface of the lower beam unit 3. Further, the focal length Fl of the lower main reflector 32 and the focal length Fl 'of the lower sub reflector 33 are set to a predetermined relationship (Fl> Fl'). As a result, the reflecting surface of the lower sub-reflector 33 is disposed so as to protrude forward of the lamp relative to the reflecting surface of the lower main reflector 32 (see FIG. 7). At this time, the back surface of the lower sub-reflector 33 is positioned in front of the lamp relative to the rear surface of the lower main reflector 32.

  In this embodiment, the height of the lamp is adjusted by setting the focal length Fl ″ of the lower main reflector 32 and the focal length Fl ″ of the auxiliary reflector 34 to a predetermined relationship (Fl> Fl ″). It is further reduced.

  As described above, the vehicular lamp according to the present invention is useful in that the lamp can be reduced in size by a configuration in which a pair of beam units are arranged adjacent to each other in the vertical direction.

It is a front perspective view which shows the vehicle lamp concerning the Example of this invention. It is a rear view which shows the vehicle lamp concerning the Example of this invention. It is explanatory drawing which shows the effect | action of the vehicle lamp described in FIG. It is explanatory drawing which shows the modification of the vehicle lamp described in FIG. It is explanatory drawing which shows the modification of the vehicle lamp described in FIG. It is explanatory drawing which shows the structure of a general valve | bulb. It is explanatory drawing which shows the lamp group modification for vehicles described in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Upper beam unit 21 Upper valve 211 Valve holder 212 Socket 22 Shade 23 Upper main reflectors 24 and 25 Upper sub reflector 3 Lower beam unit 31 Lower valve 311 Valve holder 32 Lower main reflector 33 Lower sub-reflector 10 Valve 11 Filament 12 Lead wire

Claims (2)

A vehicular lamp comprising a pair of beam units arranged adjacent to each other in the vertical direction,
Together with the beam unit which is arranged in the upper has a top valve as a light source, have a lower valve the beam units arranged in the lower part is a light source,
The upper bulb and the lower bulb each have an accessory part bent at a substantially right angle with respect to the optical axis direction of the lamp, and are arranged with the bending direction of the accessory part inclined with respect to the vertical direction of the lamp ,
The beam unit arranged in the upper stage has a plurality of upper reflectors that constitute the reflecting surface of the upper bulb, and the plurality of lower reflectors in which the beam unit arranged in the lower stage constitutes the reflecting surface of the lower bulb And
When a shadow is generated in the irradiation light by a lead wire included in at least one of the upper valve and the lower valve, the upper valve causes the shadow position of the lead wire to coincide with the boundary portions of the plurality of upper reflectors. And the lower bulb is arranged such that the shadow position of the lead wire coincides with the boundary portions of the plurality of lower reflectors . The beam unit arranged in the upper stage has an upper main reflector that constitutes the left and right reflecting surfaces of the upper bulb, and an upper sub reflector that constitutes the upper reflecting surface of the upper bulb, and is arranged in the lower stage The beam unit includes a lower main reflector that constitutes the left and right reflecting surfaces of the lower bulb, and a lower sub-reflector that constitutes a lower reflecting surface of the lower bulb, and
The focal length Fh of the upper main reflector and the focal length Fh ′ of the upper sub reflector have a relationship of Fh> Fh ′, and the focal length Fl of the lower main reflector and the focal length of the lower sub reflector. fl 'and is Fl>Fl' vehicular lamp mounting serial to claim 1 having a relationship.

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