JP5903279B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp provided with a reflector and a light guide plate.

  Conventionally, as described in, for example, “Patent Document 1”, the first lamp unit configured to reflect the emitted light from the first light source toward the front of the lamp by the reflector, and the second light source 2. Description of the Related Art A vehicular lamp is known that includes a second lamp unit configured to allow emitted light to be incident on a light guide plate and to be emitted toward the front of the lamp from its front end surface.

  In that case, in the vehicular lamp described in “Patent Document 1”, an opening is formed in the reflecting surface of the reflector, and a light guide plate is disposed so as to penetrate the opening. It has become.

JP 2007-250401 A

  In the vehicular lamp described in the above-mentioned “Patent Document 1”, the lighting method of the first lamp unit and the lighting method of the second lamp unit in the lamp front view can be made completely different. The appearance of the lamp can be improved.

  However, in the vehicle lamp described in “Patent Document 1”, a part of the light from the first light source reflected toward the front of the lamp by the reflector of the first lamp unit is a light guide plate of the second lamp unit. However, there is a problem that it cannot be used effectively because it is incident on the rear end face and becomes uncontrolled light.

  The present invention has been made in view of such circumstances, and in a vehicular lamp including a reflector and a light guide plate, the vehicular lamp can improve the appearance of the lamp and increase the light use efficiency. The purpose is to provide a lamp.

  The present invention is intended to achieve the above object by devising the arrangement of the first and second lamp units.

That is, the vehicular lamp according to the present invention is
A first lamp unit having a first light source and a reflector that reflects the emitted light from the first light source toward the front of the lamp; and a second light source and the emitted light from the second light source are incident to the front of the lamp from the front end surface. A vehicle lamp comprising: a second lamp unit having a light guide plate that emits light toward the
The light guide plate is disposed along a plane extending in the lamp front-rear direction,
The first lamp unit and the second lamp unit are adjacent to each other in a first direction intersecting the plane, and the front end surface of the light guide plate is positioned in front of the reflecting surface of the reflector. Are arranged in such a way that
The first light source is arranged so that light is incident on the reflector from a lamp front-rear direction and a second direction intersecting the first direction ;
The second light source is disposed so that light is incident on the light guide plate from the second direction;
The light guide plate has a rear end surface located rearward of the reflecting surface of the reflector, and is configured to reflect light from the second light source on the rear end surface. It is what.

  As long as the “light guide plate” is arranged along a plane extending in the front-rear direction of the lamp, it may be arranged along a horizontal plane, may be arranged along a vertical plane, You may arrange | position along an inclined surface.

  As long as the “first direction” is a direction intersecting the plane, the specific direction is not particularly limited.

  The above-mentioned “second direction” is not particularly limited as long as it is a direction crossing the lamp front-rear direction and the first direction.

  As shown in the above configuration, the vehicular lamp according to the present invention includes a first lamp unit configured to reflect light emitted from the first light source toward the front of the lamp by the reflector, and an output from the second light source. The second lamp unit is configured to allow incident light to be incident on the light guide plate and emitted from the front end face toward the front of the lamp. In this case, the second lamp unit is guided by the second lamp unit. The light plate is disposed along a plane extending in the front-rear direction of the lamp, and the second lamp unit and the first lamp unit are adjacent to each other in a first direction intersecting the plane, and The front end face of the light guide plate of the two lamp units is arranged in front of the reflecting surface of the reflector of the first lamp unit, and the first light source of the first lamp unit is attached to the reflector. Because it is arranged so as to be incident light from a second direction intersecting the lamp longitudinal direction and the first direction, and it is possible to obtain the following effects.

  That is, in the vehicular lamp according to the present invention, in the front view of the lamp, the first lamp unit provided with the reflector and the second lamp unit provided with the light guide plate can have completely different lighting methods. As a result, the appearance of the lamp can be improved.

  In the vehicular lamp according to the present invention, even if a part of the light from the first light source reflected toward the front of the lamp by the reflector of the first lamp unit is incident on the light guide plate of the second lamp unit, Since light enters from one surface of the light guide plate and then exits from the opposite surface in the same direction as the incident direction, it can be used effectively as controlled light.

  As described above, according to the present invention, in the vehicular lamp including the reflector and the light guide plate, it is possible to improve the appearance of the lamp and increase the light use efficiency.

  Moreover, in the present invention, when the lamp is observed obliquely from the front, the reflector of the first lamp unit can be seen to shine through the light guide plate of the second lamp unit. Improvements can be made.

  In the above configuration, the second light source of the second lamp unit is arranged so that light is incident on the light guide plate from the second direction, and the light guide plate is moved from the reflecting surface of the reflector of the first lamp unit. If the light source plate is viewed from the front of the lamp when the light source plate is viewed from the front of the lamp, the rear light source is configured to have a rear end surface located on the rear side, and the rear end surface reflects light from the second light source. Can be prevented. As a result, the appearance of the lamp can be further improved.

  In the above configuration, when the pair of first lamp units are arranged so as to sandwich the second lamp unit, even when the light guide plates of the second lamp unit are observed from the diagonally forward direction of the lamps on both sides thereof, this It is possible to make the reflector of the first lamp unit appear to shine through the light guide plate, thereby further improving the appearance of the lamp.

  In the above configuration, if a plurality of sets of first lamp units and second lamp units are alternately arranged, both lamp units can be seen repeatedly in completely different ways of lighting when viewed from the front of the lamp. The appearance of the lamp can be further improved.

  At this time, the first direction is set in the vehicle width direction, and the plurality of second lamp units are arranged such that the second lamp unit located outward in the vehicle width direction has the front end surface of the light guide plate at the rear. If the lamp is mounted on a vehicle having a vehicle body shape that is formed so as to wrap around to the rear side of the lamp toward the outer side in the vehicle width direction, the vehicle body is arranged. A lamp design suitable for the shape can be realized.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention II-II sectional view of FIG. III-III sectional view of FIG. IV-IV sectional view of FIG. It is a front view which shows the said vehicle lamp in a lighting state, Comprising: (a) is a figure which shows the state lighted in tail lamp lighting mode, (b) is a figure which shows the state lighted in stop lamp lighting mode The same figure as FIG. 4 which shows the modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a vehicular lamp 10 according to an embodiment of the present invention. 2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a sectional view taken along the line IV-IV in FIG.

  As shown in these drawings, a vehicular lamp 10 according to the present embodiment is a tail and stop lamp provided at the right rear end of a vehicle, and is attached to a lamp body 12 and a front end opening of the lamp body 12. The four first lamp units 20 and the five second lamp units 30 are incorporated in a lamp chamber formed by the transparent transparent cover 14 thus formed.

  In the description of the present embodiment, the front-rear direction such as “front” or “rear” is the direction as the vehicular lamp 10 and is opposite to the direction as the vehicle.

  The translucent cover 14 is formed so as to curve and wrap around toward the outside in the vehicle width direction. The translucent cover 14 is formed so as to extend slightly inclined rearward in the vertical direction.

  Each first lamp unit 20 includes a first light source 22 and a reflector 24 that reflects the emitted light from the first light source 22 toward the front of the lamp.

  The first light source 22 is a red light emitting diode, which is arranged with its light emitting surface facing downward, and allows light to enter the reflector 24 from above.

  The reflecting surface 24a of the reflector 24 is composed of a plurality of reflecting elements 24s. The plurality of reflecting elements 24 s are allocated to a plurality of segments that are divided in a lattice shape in the up-down direction and the left-right direction. At this time, each of the reflecting elements 24s is formed in a concave shape with a rotating paraboloid having a central axis as an axis extending in the front-rear direction of the lamp and having a light emitting center of the first light source 22 as a focal point. As a result, each of the reflecting elements 24s diffuses and reflects the light emitted from the first light source 22 in the vertical and horizontal directions toward the front of the lamp.

  On the other hand, each of the second lamp units 30 includes a second light source 32 and a light guide plate 34 that allows the light emitted from the second light source 32 to enter and emit the light from the front end surface 34a toward the front of the lamp. ing.

  The light guide plate 34 is a transparent plate-like member formed with a constant thickness, and is disposed along a vertical plane extending in the front-rear direction of the lamp.

  The second light source 32 is a red light emitting diode, and is disposed with its light emitting surface facing downward, so that light enters the light guide plate 34 from its upper end surface 34b. On the upper end surface 34b of the light guide plate 34, a spherical concave portion 34b1 is formed for allowing the light emitted from the second light source 32 to enter without being refracted.

  The rear end surface 34c of the light guide plate 34 is configured as a paraboloid of revolution having a light emission center of the second light source 32 as a focal point and an axis extending in the longitudinal direction of the lamp as a central axis. As a result, the light guide plate 34 reflects the emitted light from the second light source 32 toward the front of the lamp as the substantially parallel light on the rear end surface 34c. In order to realize this, the rear end face 34c of the light guide plate 34 is subjected to a reflection process such as aluminum vapor deposition.

  A plurality of lens elements 34 s are formed on the front end surface 34 a of the light guide plate 34. The plurality of lens elements 34 s are assigned to a plurality of segments that are divided into horizontal stripes in the vertical direction. At this time, each of the lens elements 34s is formed in a convex shape. As a result, the internally reflected light that has reached the front end surface 34a of the light guide plate 34 as substantially parallel light is diffused and emitted in the vertical and horizontal directions from the lens elements 34s toward the front of the lamp.

  In the vehicular lamp 10 according to the present embodiment, four first lamp units 20 and five second lamp units 30 are alternately arranged so as to be adjacent to each other in the vehicle width direction. At that time, a pair of second lamp units 30 are arranged at both left and right ends, and each of the remaining three second lamp units 30 located inside thereof is a pair of first lamps located on both the left and right sides. They are arranged so as to be sandwiched between the units 20.

  The four first lamp units 20 and the five second lamp units 30 are arranged such that the front end surface 34a of the light guide plate 34 in each second lamp unit 30 is reflected by the reflecting surface of the reflector 24 in each first lamp unit 20 adjacent thereto. The rear end surface c of the light guide plate 34 in each second lamp unit 30 is positioned behind the reflecting surface 24a of the reflector 24 in each first lamp unit 20 adjacent thereto. It is arranged like that. Further, the light guide plate 34 of each second lamp unit 30 has an upper end surface 34b located above the reflecting surface 24a of the reflector 24 of each first lamp unit 20, and a lower end edge of each light guide plate 34. The unit 20 is located below the reflecting surface 24a of the reflector 24.

  The five second lamp units 30 are arranged such that the second lamp unit 30 located outward in the vehicle width direction displaces the front end face 34a of the light guide plate 34 to the rear side. The light guide plate 34 of each of the second lamp units 30 has a front end surface 34 a arranged along the wraparound shape of the translucent cover 14. Further, the front end face 34a of each of the light guide plates 34 is formed so as to extend rearwardly along the rearward inclined shape of the translucent cover 14 in the vertical direction.

  The first light source 22 of each first lamp unit 20 and the second light source 32 of each second lamp unit 30 are supported by a common light source support member 40. The light source support member 40 is supported by the lamp body 12.

  The reflectors 24 of the four first lamp units 20 are integrally formed as a single reflector unit 26. The reflector unit 26 is supported by the lamp body 12.

  The reflector unit 26 includes a connecting portion 26 a that connects the reflectors 24 to each other at the rear end portion of each reflector 24. The reflector unit 26 includes a curved surface portion 26b extending along the rear end surface c of the light guide plate 34 behind the light guide plate 34 of each second lamp unit 30, and the light guide plate 34 is provided at the curved surface portion 26b. Support.

  As described above, the reflector 24 of each first lamp unit 20 is configured so that the light emitted from the first light source 22 is directed in the vertical direction and the left and right directions toward the front of the lamp in each of the plurality of reflecting elements 24s constituting the reflecting surface 24a. Since the light is diffusely reflected in the direction, part of the light reflected in this way reaches the side surface of the light guide plate 34 adjacent to the reflector 24. Then, the reflected light reaching the side surface of the light guide plate 34 in this way passes through the light guide plate 34 and is emitted from the opposite side surface in the same direction as the incident direction.

  In the vehicular lamp 10 according to the present embodiment, the second light source 32 of each second lamp unit 30 is lit in the tail lamp lighting mode, and the first light source 22 of each first lamp unit 20 is lit in the stop lamp lighting mode. It has become.

  FIG. 5 is a front view showing the vehicular lamp 10 in a lighting state.

  (A) of the same figure is a figure which shows the state lighted by the tail lamp lighting mode.

  In this lighting mode, when viewed from the front of the lamp, the front end surface 34a of the light guide plate 34 of each second lamp unit 30 appears to emit light in horizontal stripes at a plurality of positions in the vertical direction for each lens element 34s.

  FIG. 6B is a diagram showing a state where the lamp is lit in the stop lamp lighting mode.

  In this lighting mode, when the lamp is viewed from the front, the reflecting surface 24a of the reflector 24 of each first lamp unit 20 appears to emit light at multiple points in the vertical and horizontal directions for each reflective element 24s. Become.

  Next, the effect of this embodiment is demonstrated.

  The vehicular lamp 10 according to the present embodiment includes a first lamp unit 20 configured to reflect light emitted from the first light source 22 toward the front of the lamp by the reflector 24, and light emitted from the second light source 32. Is incident on the light guide plate 34 and is emitted from the front end surface 34a toward the front of the lamp, and the second lamp unit 30 is configured to include the second lamp unit 30. The light guide plate 34 is disposed along a vertical plane extending in the lamp front-rear direction, and the second lamp unit 30 and the first lamp unit 20 are arranged in the vehicle width direction (that is, the vertical plane extending in the lamp front-rear direction). In the first direction intersecting with each other) and the front end surface 34a of the light guide plate 34 of the second lamp unit 30 is more than the reflecting surface 24a of the reflector 24 of the first lamp unit 20 The first light source 22 of the first lamp unit 20 is located above the reflector 24 (that is, the lamp front-rear direction and the second direction intersecting the first direction). Therefore, the following effects can be obtained.

  That is, in the vehicular lamp 10 according to the present embodiment, in the front view of the lamp, the first lamp unit 20 provided with the reflector 24 and the second lamp unit 30 provided with the light guide plate 34 have completely different lighting methods. This can improve the appearance of the lamp.

  In the vehicular lamp 10 according to the present embodiment, a part of the light from the first light source 22 reflected toward the front of the lamp by the reflector 24 of the first lamp unit 20 is a light guide plate 34 of the second lamp unit 30. However, since the light incident on the light guide plate 34 is incident from one side surface and then exits from the opposite side surface in the same direction as the incident direction, This can be used effectively as controlled light.

  As described above, according to the present embodiment, in the vehicular lamp 10 including the reflector 24 and the light guide plate 34, it is possible to improve the appearance of the lamp and increase the light use efficiency.

  Moreover, in the present embodiment, when the lamp is observed obliquely from the left and right, the reflector 24 of the first lamp unit 20 can be seen to shine through the light guide plate 34 of the second lamp unit 30. Can improve the appearance of the lamp.

  In the vehicular lamp 10 according to the present embodiment, the second light source 32 of the second lamp unit 30 is arranged so that light enters the light guide plate 34 from above, and the light guide plate 34 It has a rear end surface 34c located rearward of the reflecting surface 24a of the reflector 24 of one lamp unit 20, and is configured to reflect light from the second light source 32 on the rear end surface 34c. Therefore, when the light guide plate 34 is observed from the front direction of the lamp, it is possible to prevent the second light source 32 from being lit up and seen. As a result, the appearance of the lamp can be further improved.

  In addition, since the vehicular lamp 10 according to the present embodiment is arranged so that the pair of first lamp units 20 sandwich the second lamp unit 30, the lamp lamp is oblique to the light guide plate 34 of the second lamp unit 30. The reflector 24 of the first lamp unit 20 can be seen to shine through the light guide plate 34 of the second lamp unit 30 when observed from either the left or right direction in front. As a result, the appearance of the lamp can be further improved.

  Furthermore, in the vehicular lamp 10 according to the present embodiment, since a plurality of first lamp units 20 and second lamp units 30 are alternately arranged, the lamp units 20 and 30 are completely different in a front view of the lamp. It can be seen repeatedly by the way it glows. As a result, the appearance of the lamp can be further improved.

  At that time, in the vehicular lamp 10 according to the present embodiment, the five second lamp units 30 displace the front end surface 34a of the light guide plate 34 toward the rear side as the second lamp units 30 are located outward in the vehicle width direction. Since these are arranged in such a manner, they can be placed along the translucent cover 14 formed so as to turn outward in the vehicle width direction and toward the rear side of the lamp, and thereby a lamp design adapted to the vehicle body shape can be obtained. It can be easily realized.

  In the above-described embodiment, the four first lamp units 20 and the five second lamp units 30 are alternately arranged so as to be adjacent to each other in the vehicle width direction so that the second lamp units 30 are positioned at both left and right ends. However, it is of course possible to adopt a configuration in which the first and second lamp units 20, 30 are arranged in a combination of other numbers.

  In the above embodiment, the rear end surface 34c is subjected to a reflection process such as aluminum vapor deposition in order to reflect the emitted light from the second light source 32 on the rear end surface 34c of the light guide plate 34 in each second lamp unit 30. As described above, instead of doing this, each curved surface portion 26b of the reflector unit 26 (that is, a portion extending along the rear end surface c behind the light guide plate 34 of each second lamp unit 30). It is also possible to adopt a configuration in which a reflection process such as aluminum vapor deposition is applied to the curved surface portion 26b so that the emitted light from the second light source 32 is reflected.

  In the said embodiment, although the light-guide plate 34 in each 2nd lamp unit 30 demonstrated as what was arrange | positioned along the vertical surface extended in a lamp front-back direction, it is arrange | positioned along the plane extended in a lamp front-back direction. If it is, it is also possible to set it as the structure arrange | positioned along planes other than a vertical surface (for example, plane inclined with respect to the vertical surface).

  In the above embodiment, the case where the vehicle lamp 10 is a tail & stop lamp provided at the right rear end of the vehicle has been described, but when the vehicle lamp 10 is a tail & stop lamp provided at the left rear end of the vehicle, Alternatively, even in the case of a lamp provided at the front end portion of the vehicle, the same effect as in the above embodiment can be obtained by adopting the same configuration as in the above embodiment.

  In this case, when the lamp is provided at the front end portion of the vehicle, for example, each first lamp unit 20 functions as a front turn signal lamp by configuring the first light source 22 with an amber light emitting diode. By configuring the second light source 32 with a white light emitting diode, each second lamp unit 30 can function as a clearance lamp or a daytime running lamp.

  Next, a modification of the above embodiment will be described.

  FIG. 6 is a view similar to FIG. 4 showing a vehicular lamp 110 according to a modification of the above embodiment.

  As shown in the figure, the vehicular lamp 110 according to this modification is the same in the basic configuration as in the above embodiment, but the configuration of the light guide plate 134 in each second lamp unit 130 is as follows. This is different from the above embodiment.

  That is, the rear end surface 134c of the light guide plate 134 of this modification is configured by a plurality of reflective elements 134s. The plurality of reflecting elements 134s are allocated to a plurality of segments that are divided into horizontal stripes in the vertical direction. At this time, each of the reflecting elements 134s is formed in a concave shape that is recessed with respect to the vertical direction with a rotational paraboloid having a central axis that is an axis extending in the front-rear direction of the lamp as a focal point. Has been. As a result, each of the reflecting elements 134s diffuses and reflects the emitted light from the second light source 132 in the vertical direction toward the front of the lamp.

  Further, the light guide plate 134 of the present modification is formed as a single cylindrical lens whose front end surface 134a extends in the vertical direction. As a result, the light diffused and reflected in the vertical direction by the reflecting elements 134s on the rear end surface 134c of the light guide plate 134 is diffused and emitted in the left-right direction from the front end surface 134a toward the front of the lamp.

  By adopting the configuration of the present modification, each second lamp unit 130 can be viewed differently from each second lamp unit 30 of the above-described embodiment, and the same effect as that of the above-described embodiment can be obtained. it can.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

DESCRIPTION OF SYMBOLS 10,110 Vehicle lamp 12 Lamp body 14 Translucent cover 20 1st lamp unit 22 1st light source 24 Reflector 24a Reflective surface 24s, 134s Reflective element 26 Reflector unit 26a Connection part 26b Curved part 30, 130 2nd lamp unit 32, 132 Second light source 34, 134 Light guide plate 34a, 134a Front end surface 34b Upper end surface 34b1 Spherical recess 34c, 134c Rear end surface 34s Lens element 40 Light source support member

Claims (4)

A first lamp unit having a first light source and a reflector that reflects the emitted light from the first light source toward the front of the lamp; and a second light source and the emitted light from the second light source are incident to the front of the lamp from the front end surface. A vehicle lamp comprising: a second lamp unit having a light guide plate that emits light toward the
The light guide plate is disposed along a plane extending in the lamp front-rear direction,
The first lamp unit and the second lamp unit are adjacent to each other in a first direction intersecting the plane, and the front end surface of the light guide plate is positioned in front of the reflecting surface of the reflector. Are arranged in such a way that
The first light source is arranged so that light is incident on the reflector from a lamp front-rear direction and a second direction intersecting the first direction ;
The second light source is disposed so that light is incident on the light guide plate from the second direction;
The light guide plate has a rear end surface located rearward of the reflecting surface of the reflector, and is configured to reflect light from the second light source on the rear end surface. A vehicular lamp.   2. The vehicular lamp according to claim 1, wherein the pair of first lamp units are arranged so as to sandwich the second lamp unit. 3.   2. The vehicular lamp according to claim 1, wherein a plurality of sets of the first lamp unit and the second lamp unit are alternately arranged. The first direction is set in the vehicle width direction,
The plurality of second lamp units are arranged such that the second lamp unit located outward in the vehicle width direction is displaced so that the front end face of the light guide plate is displaced rearward. The vehicle lamp as described.

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