JP7019403B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp provided with a light guide.

Conventionally, there has been known a vehicle lamp configured so that light emitted from a light source is incident on the rear surface of a light guide and emitted from the front surface thereof.

In "Patent Document 1", in such a vehicle lighting tool, a first incident portion for incident light from a light source as light toward the front of the lighting tool and an adjacent portion adjacent to the first incident portion on the rear surface of the light guide body. The second incident part that incidents the light from the light source as light toward the side of the lamp and the total reflection part that totally reflects the light from the light source incident from this second incident part as light toward the front of the lamp. The formed configuration is described.

The vehicle lamp described in "Patent Document 1" includes first and second light emitting elements arranged at positions behind the lamp of the first incident portion as its light source, and emits light by simultaneously lighting these. It is configured to suppress the occurrence of unevenness.

JP-A-2015-201278

In the vehicle lighting equipment described in the above "Patent Document 1", when the first and second light emitting elements are individually turned on, the front surface of the light guide body shines with the same brightness regardless of which of the first and second light emitting elements is turned on. Therefore, it is difficult to meet the need to suppress the brightness of the lamp when the second light emitting element is turned on as compared to when the first light emitting element is turned on.

The present invention has been made in view of such circumstances, and when the first and second light emitting elements are provided as a light source for a vehicle lamp provided with a light guide, the second light emitting element is lit. At times, it is an object of the present invention to provide a vehicle lamp that can suppress the brightness of the lamp more than when the first light emitting element is lit.

The present invention is designed to achieve the above object by devising the arrangement of the first and second light emitting elements.

That is, the vehicle lamp according to the present invention is
In a vehicle lamp provided with a light source and a light guide body configured to incident light emitted from the light source, guide it in a required direction, and then emit it from the front surface.
The first and second light emitting elements are provided as the above light source, and the light source is provided.
The light guide body has a first incident portion for incident light from the first light emitting element as light directed forward in the required direction at a position in front of the first light emitting element in a required direction, and a position adjacent to the first incident portion. In the second incident portion where the light from the first light emitting element is incident as light toward the side in the required direction, and the light from the first light emitting element incident from the second incident portion is used as light toward the front in the required direction. Equipped with a total reflection part that totally reflects,
The second light emitting element is arranged at a position deviated from the position behind the required direction of the first incident portion to the side of the total reflection portion .
The light guide is characterized in that the light from the second light emitting element is configured to be incident on the total reflection portion as direct light .

If the above-mentioned "light guide body" is configured to guide the light incident from the light source in the required direction and then emit it from the front surface, even if it is configured to guide the light in the required direction and then emit it from the front surface as it is. Alternatively, it may be configured so that it is guided in the required direction and then guided in a direction different from the required direction and then emitted from the front surface.

The specific direction of the above-mentioned "required direction" is not particularly limited, and for example, a lamp front-rear direction, a left-right direction, a vertical direction, and the like can be adopted.

The emission color of each of the "first and second light emitting elements" is not particularly limited, and the same emission color may or may be different between the above "first and second light emitting elements". It may be an emission color.

The specific arrangement of the "second light emitting element" is not particularly limited as long as it is arranged at a position deviated from the position behind the required direction of the first incident portion to the total reflection portion side, and at that time. , The total reflection portion may be arranged at the rear position in the required direction, or may be arranged at a position outside the required direction rear position.

The above-mentioned "required direction sideways" means a direction that intersects with the required direction, and the specific direction thereof is not particularly limited.

The vehicle lighting fixture according to the present invention has a configuration in which light from the first and second light emitting elements incident on the light guide body is guided in a required direction and then emitted from the front surface, and the light guide body is the first. A first incident portion for incident light from the first light emitting element as light heading forward in the required direction at a position in front of the light emitting element in a required direction, and a light from a first light emitting element at a position adjacent to the first incident portion. It is provided with a second incident portion that is incident as light directed to the side in the required direction, and a total reflection portion that totally reflects the light from the first light emitting element incident from the second incident portion as light directed forward in the required direction. However, since the second light emitting element is arranged at a position deviated from the position rearward in the required direction of the first incident portion to the side of the total reflection portion, the following effects can be obtained.

That is, the light from the first light emitting element arranged at the position rearward in the required direction of the first incident portion is incident as light heading forward in the required direction in the first incident portion, and is required in the second incident portion adjacent thereto. Since a large amount of light reaches the front surface of the light guide body by being totally reflected as light heading forward in the required direction at the total reflection part after being incident as light heading sideways in the direction, this front surface looks bright. Become.

On the other hand, since the second light emitting element is arranged at a position deviated from the position behind the required direction of the first incident portion to the total reflection portion side, the second light emitting element is emitted from the second light emitting element and then incident on the light guide body. The amount of light reaching the front surface is smaller than that of the first light emitting element.

Therefore, when the second light emitting element is lit, the front surface of the light guide can be made to appear shining with the brightness suppressed as compared with the case where the first light emitting element is lit.

As described above, according to the present invention, in the case where the first and second light emitting elements are provided as the light source of the vehicle lamp equipped with the light guide, when the second light emitting element is turned on, the time when the first light emitting element is turned on is higher than when the first light emitting element is turned on. The brightness of the lamp can be suppressed.

In the above configuration, the vehicle lighting equipment has the functions of a front turn signal lamp and a clearance lamp, and the first light emitting element is lit in the lighting mode of the front turn signal lamp and the clearance lamp is lit in the lighting mode. If the two light emitting elements are lit, the following effects can be obtained.

That is, in the lighting mode of the front turn signal lamp, the front surface of the light guide body can be seen shining with the brightness suitable for the front turn signal lamp (that is, in a state where sufficient brightness is secured), and then the clearance. In the lamp lighting mode, the front surface of the light guide can be made to appear shining with a brightness suitable for a clearance lamp (that is, with the brightness suppressed to some extent).

In the above configuration, if the first and second incident portions are formed in an annular shape at a plurality of locations of the light guide, and the first light emitting element is arranged at each of the plurality of locations, each first light emitting element is configured. The efficiency of incident light emitted from one light emitting element onto the light guide can be sufficiently increased, whereby the brightness of the lamp when each first light emitting element is lit can be sufficiently increased.

In the above configuration, if the total reflection portion is formed so as to extend continuously over the plurality of locations, the light emitted from the second light emitting element that has reached the total reflection portion is directed in the direction in which the total reflection portion extends. It can be incident on the light guide as widely diffused light. As a result, when the second light emitting element is turned on, the front surface of the light guide can be seen shining over a wide area while the brightness is sufficiently suppressed.

At that time, if the second light emitting element is arranged at a plurality of places in the direction in which the total reflection portion extends, the front surface of the light guide body can be seen to shine substantially uniformly over a wide area when the second light emitting element is turned on. can do.

Instead of adopting such a configuration, it is also possible to configure the total reflection portion so as to surround the first and second incident portions formed in a ring shape. At that time, it is also possible to have a configuration in which the second light emitting elements are arranged at a plurality of locations in the circumferential direction with respect to the total reflection portion formed in an annular shape.

Front view showing a vehicle lamp according to an embodiment of the present invention. Section II-II sectional view of FIG. FIG. 1 is a sectional view taken along line IIII-III. A diagram substantially similar to FIG. 3, showing the main parts of the above-mentioned vehicle lamps. The same figure as FIG. 2 which shows the 1st modification of the said Embodiment. The same figure as FIG. 1 which shows the 2nd and 3rd modification of the said Embodiment. The same figure as FIG. 4 which shows the 4th modification of the said Embodiment. The same figure as FIG. 1 which shows the 5th and 6th 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 vehicle lamp 10 according to an embodiment of the present invention. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG.

As shown in these figures, the vehicle lighting tool 10 according to the present embodiment is a lighting tool provided at the left front end portion of the vehicle, and has the functions of a front turn signal lamp and a clearance lamp.

The lamp body 10 for a vehicle has a configuration in which a lamp unit 20 is incorporated in a lamp chamber formed by a lamp body 12 and a transparent transparent cover 14 attached to a front end opening of the lamp body 12. There is.

In these figures, the direction indicated by X is the "front" of the vehicle lamp 10 ("front" as the vehicle), and the direction indicated by Y is the "left direction" ("right direction" when viewed from the front of the lamp). Yes, the direction indicated by Z is "upward". The same applies to figures other than these.

The translucent cover 14 is formed so as to extend diagonally rearward from its right end to the left end.

The lamp unit 20 includes five first light emitting elements 22 and five second light emitting elements 24 as its light source, and the light guide body 30 is arranged on the front side thereof.

Each of the first light emitting elements 22 is an amber light emitting diode that lights up in the lighting mode of the front turn signal lamp, and is equally spaced in the left-right direction (that is, in the vehicle width direction) with its light emitting surface facing forward of the lamp. It is arranged.

On the other hand, each second light emitting element 24 is a white light emitting diode that lights up in the lighting mode of the clearance lamp, and is arranged at equal intervals in the left-right direction with the light emitting surface facing the front of the lamp. However, each second light emitting element 24 is arranged at a position directly above or directly below each first light emitting element 22. At that time, the second light emitting elements 24 are arranged alternately above and below each of the first light emitting elements 22 adjacent to each other.

The five first light emitting elements 22 and the five second light emitting elements 24 are supported by a common substrate 26. The substrate 26 is supported by the lamp body 12.

The light guide body 30 is configured as a plate-shaped member made of transparent resin extending along a horizontal plane. The light guide body 30 is configured so that the light emitted from the five light emitting elements 22 and the five second light emitting elements 24 is incident on the rear surface 30b and emitted from the front surface 30a thereof.

A plurality of diffusing lens elements 30s are formed in a vertical and horizontal lattice pattern on the front surface 30a of the light guide body 30, and the light reaching the front surface 30a is diffused in the vertical direction and the horizontal direction in each diffusing lens element 30s. It is designed to emit light to the front of the lamp.

The front surface 30a of the light guide body 30 is formed so as to extend diagonally rearward from the right end portion to the left end portion along the shape of the translucent cover 14, but the rear surface 30b is formed so as to extend in the left-right direction. Has been done.

Tab portions 30c are formed on the left and right side surfaces of the light guide body 30. The light guide body 30 is supported by the lamp body 12 in the pair of left and right tab portions 30c.

As shown in FIG. 2, the light from the first light emitting element 22 is incident as light toward the front of the lamp at the position in front of the lamp of the first light emitting element 22 at five locations in the left-right direction on the rear surface 30b of the light guide body 30. A first incident portion 30bA to be incident is formed, and a second incident portion 30bB is formed around the first incident portion 30bA to incident the light from the first light emitting element 22 as light toward the lamp.

At that time, the first incident portion 30bA is composed of a convex curved surface protruding rearward of the lamp centering on the axis Ax extending in the front-rear direction so as to pass through the light emitting center of the first light emitting element 22. The light from 22 is incident as light directed in a direction substantially parallel to the axis Ax.

Further, the second incident portion 30bB is formed of a conical curved surface centered on the axis Ax, and the light from the first light emitting element 22 is incident as light that spreads radially around the axis Ax. ing.

4A and 4B are views showing the lamp unit 20 taken out from FIG. 3, FIG. 4A shows an optical path of light emitted from the first light emitting element 22, and FIG. 4B shows a second light emission. The optical path of the light emitted from the element 22 is shown.

As shown in FIG. 4A, the light emitting element 22 incident on the rear surface 30b of the light guide body 30 from the second incident portion 30bB on both the upper and lower sides of the first and second incident portions 30bA and 30bB. A total reflection portion 30bC that totally reflects the light as light toward the front of the lamp is formed.

These upper and lower pairs of total reflection portions 30bC are formed so as to extend continuously over the first and second incident portions 30bA and 30bB formed at five locations. Specifically, each of these upper and lower pairs of total reflection portions 30bC is composed of a convex substantially cylindrical surface extending in the left-right direction over the entire width of the rear surface 30b of the light guide body 30, and each second incident portion 30bB. The light from each first light emitting element 22 incident from the above is totally reflected as light directed in a direction substantially parallel to the axis Ax in the vertical plane.

On the other hand, each of the second light emitting elements 24 is located at a position directly above or directly below each of the first light emitting elements 22 at a position behind the lamp of the total reflection portion 30bC (that is, from a position behind the lamp of the first incident portion 30bA to the side of the total reflection portion 30bC). It is located in the off position).

As shown in FIGS. 2 and 4A, the light emitted from the first light emitting element 22 and the light incident from the first incident portion 30bA on the light guide body 30 are also incident from the second incident portion 30bB. The light totally reflected by the total reflection unit 30bC also reaches the front surface 30a as light heading in a direction substantially parallel to the axis Ax. Then, the light that reaches the front surface 30a is emitted from the front surface 30a toward the front of the lamp as light that is diffused substantially uniformly in the vertical direction and the horizontal direction at a relatively small diffusion angle about the axis Ax.

On the other hand, as shown in FIG. 4B, the optical path of the light emitted from the second light emitting element 24 arranged directly under the first light emitting element 22 and incident on the light guide body 30 is as follows. ..

That is, the light incident from the lower total reflection portion 30bC reaches the front surface 30a after being totally reflected (or directly) on the upper surface of the light guide body 30 as diagonally upward light, or the lower region of the second incident portion 30bB. After total reflection at, the light reaches the front surface 30a after being totally reflected (or directly) on the lower surface of the light guide body 30 as diagonally downward light.

Further, the light incident from the first incident portion 30bA reaches the front surface 30a after being totally reflected on the upper surface of the light guide body 30 as diagonally upward light and then totally reflected on the lower surface of the light guide body 30 (or directly). ..

Further, the light incident from the upper region of the second incident portion 30bB is totally reflected by the upper total reflection portion 30bC and then totally reflected by the upper surface of the light guide body 30 to reach the front surface 30a.

In this way, the light emitted from the second light emitting element 24 arranged directly below the first light emitting element 22 and incident on the light guide body 30 reaches the front surface 30a as light diffused in the vertical direction, and thus the front surface thereof. The light emitted from 30a is light that diffuses relatively large in the vertical direction.

Further, as shown in FIG. 2, the light emitted from the second light emitting element 24 arranged directly under the first light emitting element 22 and incident on the light guide body 30 from the lower total reflection portion 30bC has an axis Ax. It reaches the front surface 30a as light diffused on both the left and right sides as a center, and is emitted from the front surface 30a as light diffused relatively largely in the left-right direction.

The same applies to the light emitted from the second light emitting element 24 arranged directly above the first light emitting element 22.

Next, the action and effect of this embodiment will be described.

The vehicle lighting fixture 10 according to the present embodiment has a configuration in which light from the first and second light emitting elements 22 and 24 incident on the light guide body 30 is guided to the front (required direction) of the lighting fixture and then emitted from the front surface 30a. The light guide body 30 includes a first incident portion 30bA that causes light from the first light emitting element 22 to be incident as light toward the front of the lighting device in front of the lighting device (front in a required direction) of the first light emitting element 22. A second incident portion 30bB for incident light from the first light emitting element 22 as light toward the lighting equipment side on the outer peripheral side (position adjacent to the first incident portion 30bA), and a first incident portion 30bB incident from the second incident portion 30bB. It is provided with a total reflection unit 30bC that totally reflects the light from the light emitting element 22 as light toward the front of the lamp, but the second light emitting element 24 is displaced from the rear position of the lamp of the first incident portion 30bA to the total reflection unit 30bC side. Since it is arranged at the above position, the following effects can be obtained.

That is, the light from the first light emitting element 22 arranged at the rear position of the lamp of the first incident portion 30bA is incident as light toward the front of the lamp in the first incident portion 30bA, and the second incident portion 30bB adjacent thereto is incident. After being incident as light toward the side of the lamp, the total reflection portion 30bC reflects the light as light toward the front of the lamp, so that a large amount of light reaches the front surface 30a of the light guide body 30, so that the front surface 30a shines brightly. Will be visible.

On the other hand, since the second light emitting element 24 is arranged at a position deviated from the position behind the lamp of the first incident portion 30bA to the total reflection portion 30bC side, after emitting light from the second light emitting element 24, the light guide body 30 is used. The amount of light incident and reaching the front surface 30a is smaller than that in the case of the first light emitting element 22.

Therefore, when the second light emitting element 24 is lit, the front surface 30a of the light guide body 30 can be made to appear shining in a state where the brightness is suppressed as compared with the time when the first light emitting element 22 is lit.

As described above, according to the present embodiment, when the first and second light emitting elements 22 and 24 are provided as the light source of the vehicle lamp 10 provided with the light guide body 30, when the second light emitting element 24 is lit, the second light emitting element 24 is lit. 1 The brightness of the lamp can be suppressed as compared with when the light emitting element 22 is lit.

Moreover, in the present embodiment, the diffusion angle of the light emitted from the second light emitting element 24 when reaching the front surface 30a of the light guide body 30 is larger than that of the light emitted from the first light emitting element 22. It is even easier to suppress the brightness of the lamp when the second light emitting element 24 is lit than when the first light emitting element 22 is lit.

Further, in the present embodiment, since the second light emitting element 24 is arranged at the rear position of the lamp of the total reflection portion 30bC, the above-mentioned effect can be obtained without increasing the plate thickness of the light guide body 30.

In particular, the vehicle lighting tool 10 according to the present embodiment has the functions of the front turn signal lamp and the clearance lamp, and the first light emitting element 22 is lit in the lighting mode of the front turn signal lamp and the clearance lamp is lit in the lighting mode. Since the two light emitting elements 24 are configured to light up, the following effects can be obtained.

That is, in the lighting mode of the front turn signal lamp, the front surface 30a of the light guide body 30 is made to appear shining with a brightness suitable for the front turn signal lamp (that is, in a state where sufficient brightness is secured). In the lighting mode of the clearance lamp, the front surface 30a of the light guide body 30 can be made to appear shining with a brightness suitable for the clearance lamp (that is, in a state where the brightness is suppressed to some extent).

Further, in the present embodiment, the first and second incident portions 30bA and 30bB are formed in an annular shape at five locations of the light guide body 30, and the first light emitting element 22 is arranged at each of these five locations. The efficiency of incident light emitted from each first light emitting element 22 onto the light guide body 30 can be sufficiently increased, whereby the brightness of the lamp when each first light emitting element 22 is lit can be sufficiently increased. can.

At that time, in the present embodiment, the upper and lower pairs of total reflection portions 30bC are formed so as to continuously extend over the five locations where the first and second incident portions 30bA and 30bB are arranged. The light emitted from the second light emitting element 24 that has reached the total reflection unit 30bC can be incident on the light guide body 30 as light that is widely diffused in the left-right direction (the direction in which the total reflection unit 30bC extends). As a result, when the second light emitting element 24 is turned on, the front surface 30a of the light guide body 30 can be made to appear shining over a wide area while the brightness is sufficiently suppressed.

Moreover, in the present embodiment, since the second light emitting element 24 is arranged at five locations in the left-right direction, the front surface 30a of the light guide body 30 appears to shine substantially uniformly over a wide area when the second light emitting element 24 is lit. Can be.

In the above embodiment, it has been described that the first incident portion 30bA is configured to incident the light from the first light emitting element 22 as light directed in a direction substantially parallel to the axis Ax, but the diffused light. Alternatively, it may be configured to be incident as light to be condensed.

In the above embodiment, the vehicle lighting fixture 10 has been described as being provided at the front end of the vehicle as a lighting fixture having the functions of a front turn signal lamp and a clearance lamp, but other than this, for example, a tail lamp, a stop lamp, and a daytime A running lamp or the like can be adopted, and the same operation and effect as those of the above embodiment can be obtained by adopting the same configuration as that of the above embodiment regardless of the location and the function provided in the vehicle.

Next, a modified example of the above embodiment will be described.

First, a first modification of the above embodiment will be described.

FIG. 5 is a diagram similar to FIG. 2, showing the vehicle lamp 110 according to the present modification.

As shown in FIG. 5, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide body 130 of the lamp unit 120 is partially different from that of the above embodiment.

That is, in the light guide body 130 of this modification, a plurality of diffusion lens elements 130s are formed in a vertical and horizontal grid pattern on the front surface 130a, and the front surface of each first light emitting element 22 on the rear surface 130b is in front of the lamp. A first incident portion 130bA similar to that in the case of the above embodiment is formed at the position, and a second incident portion 130bB similar to the case of the above embodiment is formed on the outer peripheral side thereof.

On the other hand, in the light guide body 130 of this modification, the total reflection portions 130bC are formed so as to surround the first and second incident portions 130bA and 130bB in an annular shape at five locations.

Each total reflection unit 130bC is composed of a convex curved surface that protrudes rearward of the lamp centering on the axis Ax, whereby the light from each first light emitting element 22 incident from each second incident unit 130bB is emitted from the entire circumference thereof. It is designed to be totally reflected as light heading toward the front of the lamp.

Then, the light incident on the light guide body 130 from each total reflection unit 130bC in this way is emitted from the front surface 130a toward the front of the lamp as light diffused from the front surface 130a at a relatively small diffusion angle centered on the axis Ax. do.

On the other hand, the light emitted from the second light emitting element 24 arranged directly under the first light emitting element 22 and reaching the total reflection unit 130bC is incident on the light guide 130 as light directed toward the axis Ax in the left-right direction. Then, the light is emitted from the front surface 130a toward the front of the lamp as light diffused at a relatively large diffusion angle. The same applies to the light emitted from the second light emitting element 24 arranged directly above the first light emitting element 22.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with the time when the first light emitting element 22 is lit, as in the case of the above embodiment.

Further, by adopting the configuration of this modification, the light from each first light emitting element 22 incident on the light guide body 130 from each total reflection unit 130bC is emitted from the front surface 130a at a relatively small diffusion angle. This makes it possible to make the front surface 130a of the light guide body 130 appear brighter and shining in the lighting mode of the front turn signal lamp.

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

FIG. 6A is a diagram similar to FIG. 1 showing a vehicle lamp 210 according to this modification.

As shown in FIG. 6A, the basic configuration of this modification is the same as that of the above embodiment, but the arrangement of the second light emitting element 24 in the lamp unit 220 is different from that of the above embodiment. There is.

That is, in this modification, unlike the second light emitting element 24 of the above embodiment, the position is not directly above or directly below each first light emitting element 22, but the left and right of the first light emitting element 22 adjacent to each other. It is located in the middle position in the direction. At that time, the second light emitting element 24 is arranged at the rear position of the lamp with respect to each of the upper and lower pairs of the total reflection portions 30bC.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with the time when the first light emitting element 22 is lit, as in the case of the above embodiment.

Further, by adopting the configuration of this modification, the light emitted from each second light emitting element 24 and incident on the light guide body 30 from the total reflection unit 30bC is uniformly diffused in the vertical direction and the horizontal direction. The front surface 30a can be reached, whereby the front surface 30a of the light guide body 30 can be made to appear to shine more uniformly in the lighting mode of the clearance lamp.

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

FIG. 6B is a diagram similar to FIG. 1 showing a vehicle lamp 310 according to this modification.

As shown in FIG. 6B, the basic configuration of this modification is the same as that of the first modification, but the arrangement of the second light emitting element 24 in the lamp unit 320 is the same as that of the first modification. It's different from the case.

That is, in this modification, the second light emitting element 24 is arranged at a position directly above and directly below each first light emitting element 22 and at an intermediate position in the left-right direction of the first light emitting element 22 adjacent to each other. .. At that time, the second light emitting element 24 arranged at the positions directly above and directly below each first light emitting element 22 is arranged at the position behind the lamp of the total reflection unit 330bC. Further, the second light emitting element 24 arranged at the intermediate position in the left-right direction of the first light emitting element 22 adjacent to each other is located at the general portion of the rear surface 330b (that is, the portion of the total reflection portion 330bC deviating from the rear position of the lamp). Is located in.

The light guide body 330 of this modification also has the same configuration as that of the first modification with respect to the configuration of the first and second incident portions 330bA and 330bB of the diffuser lens element 330s on the front surface 330a and the rear surface 330b. The same is true.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with the case where the first light emitting element 22 is lit, as in the case of the first modification.

Further, by adopting the configuration of this modification, the front surface 330a of the light guide body 330 can be made to appear brighter in the lighting mode of the clearance lamp than in the case of the first modification.

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

FIG. 7 is a diagram similar to FIG. 4, showing a main part of a vehicle lamp according to this modification.

As shown in FIG. 7, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide body 430 in the lamp unit 420 is different from that of the above embodiment. Accordingly, the arrangement of the first and second light emitting elements 22, 24 and the substrate 26 is different from the case of the above embodiment.

That is, in this modification, the light guide body 430 has an L-shaped shape when viewed from the side.

Specifically, the light guide body 430 is configured to include a horizontal portion 430A extending along a horizontal plane and a vertical portion 430B extending downward along a vertical surface from the rear end position of the horizontal portion 430A. There is.

As in the case of the above embodiment, a plurality of diffuser lens elements 430s are formed on the front surface 430a of the horizontal portion 430A. The rear surface 430d of the horizontal portion 430A is composed of a plane extending diagonally downward at an inclination angle of 45 ° toward the rear of the lamp.

On the other hand, the vertical portion 430B extends vertically downward from the position of the rear surface 430d of the horizontal portion 430A, and the lower surface 430b thereof is the same as the first and second incident portions 30bA, 30bB and the total reflection portion 30bC of the above embodiment. The first and second incident portions 430bA, 430bB and the total reflection portion 430bC of the above are formed.

Along with this, in this modification, the first and second light emitting elements 22, 24 and the substrate 26 are arranged vertically upward.

In the light guide body 430, the axis line AxA extending in the front-rear direction of the lamp so as to pass through the center position in the vertical direction of the horizontal portion 430A and the axis line AxB extending in the vertical direction so as to pass through the light emitting center of the first light emitting element 22. , Intersect at the rear surface 430d of the horizontal portion 430A.

As shown in FIG. 7A, the light emitted from the first light emitting element 22 is incident on the vertical portion 430B of the light guide body 430 from the first incident portion 430bA, and the light emitted from the second incident portion 430bB is also incident on the vertical portion 430B. Then, the light totally reflected by the total reflection portion 430bC also reaches the rear surface 430d of the horizontal portion 430A as light directed in a direction substantially parallel to the axis AxB, and is totally reflected toward the front of the lamp on the rear surface 430d, and then the front surface thereof. Reach 430a. Then, the light that reaches the front surface 430a is emitted from the front surface 430a toward the front of the lamp as light that is diffused substantially uniformly in the vertical direction and the horizontal direction at a relatively small diffusion angle around the axis AxA.

On the other hand, as shown in FIG. 7B, the emitted light from the second light emitting element 24 arranged at the rear position of the lamp of the first light emitting element 22 is incident on the vertical portion 430B of the light guide body 430 as diffused light. Therefore, a part of the light reaches the rear surface 430d of the horizontal portion 430A at an incident angle less than the critical angle, and escapes from the rear surface 430d. Then, the light that is totally reflected by the rear surface 430d and reaches the front surface 430a is emitted from the front surface 430a toward the front of the lamp as light diffused at a relatively large diffusion angle.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with the time when the first light emitting element 22 is lit, as in the case of the above embodiment.

Further, after guiding the light incident on the vertical portion 430B from the first and second light emitting elements 22 and 24 upward (in the required direction) as in the light guide body 430 of this modification, the front of the lamp is placed in the horizontal portion 430A. By guiding the light in a direction different from the required direction) and then emitting the light from the front surface 430a, it is possible to increase the degree of freedom in arranging the first and second light emitting elements 22, 24 and the substrate 26.

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

FIG. 8A is a diagram similar to FIG. 1 showing a vehicle lamp 510 according to this modification.

As shown in FIG. 8A, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the lamp unit 520 is different from that of the above embodiment, and accordingly. The shapes of the lamp body 512 and the translucent cover 514 are also different from those in the above embodiment.

That is, in this modification, the lamp unit 520 is configured to include a single first light emitting element 22 and four second light emitting elements 24 as its light source.

The light guide body 530 of this modification has a circular outer shape when viewed from the front of the lamp, and is supported by the lamp body 512 by a pair of left and right tab portions 530c.

Also in the light guide body 530 of this modification, a plurality of diffusion lens elements 530s are formed on the front surface 530a, and the first and second incident portions 530bA, 530bB and the total reflection portion 530bC are formed on the rear surface 530b. Has been done.

At that time, the first and second incident portions 530bA, 530bB and the total reflection portion 430bC are axial lines extending in the front-rear direction of the lamp so as to pass through the light emitting center of the first light emitting element 22 as in the case of the first modification. It is formed in a ring shape centered on Ax.

In this modification, the four second light emitting elements 24 are arranged at four positions above, below, left and right with respect to the first light emitting element 22 at the rear positions of the total reflection portion 530bC.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with the time when the first light emitting element 22 is lit, and the brightness of the lamp can be suppressed as in the case of the above embodiment. Similar to the case of the first modification, the front surface 530a of the light guide body 530 can be made to appear brighter in the lighting mode of the front turn signal lamp.

Further, as in this modification, the four second light emitting elements 24 are arranged at equal intervals in the circumferential direction with the axis Ax as the center, so that the front surface 530a of the light guide body 530 is set in the lighting mode of the clearance lamp. Can be made to appear to shine almost uniformly.

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

FIG. 8B is a diagram similar to FIG. 1 showing a vehicle lamp 610 according to this modification.

As shown in FIG. 8B, the basic configuration of this modification is the same as that of the fifth modification, but the lamp unit 620 has five first light emitting elements 22 and eight as its light source. It is different from the case of the fifth modification in that it is provided with the second light emitting element 24.

The five first light emitting elements 22 are composed of a first light emitting element 22 arranged on the axis Ax and a first light emitting element 22 arranged at four locations above, below, left and right, and all of them are the first of the light guide body 530. It is arranged at the rear position of the lamp of the incident portion 530bA.

Further, the eight second light emitting elements 24 are arranged at equal intervals in the circumferential direction around the axis Ax at positions behind the lamp of the total reflection portion 530bC.

Even when the configuration of this modification is adopted, the brightness of the lamp can be suppressed when the second light emitting element 24 is lit as compared with when the first light emitting element 22 is lit, as in the case of the above embodiment.

Further, by adopting the configuration of this modification, the front surface 530a of the light guide body 530 is substantially uniform in both the lighting mode of the front turn signal lamp and the lighting mode of the clearance lamp, and in the case of the fifth modification. It can be made to look brighter and brighter than that.

It should be noted that the numerical values shown as specifications in the above-described embodiment and its modifications are only examples, and it is needless to say that these may be set to different values as appropriate.

Further, the present invention is not limited to the configurations described in the above-described embodiment and its modifications, and configurations with various other modifications can be adopted.

10, 110, 210, 310, 510, 610 Vehicle lamp body 12, 512 Lamp body 14, 514 Translucent cover 20, 120, 220, 320, 420, 520, 620 Lamp unit 22 First light emitting element 24 Second light emitting element 26 Substrate 30, 130, 330, 430, 530 Light guide 30a, 130a, 330a, 430a, 530a Front surface 30b, 130b, 330b, 430d, 530b Rear surface 30bA, 130bA, 330bA, 430bA, 530bA First incident part 30bB, 130bB , 330bB, 430bB, 530bB 2nd incident part 30bC, 130bC, 330bC, 430bC, 530bC Total reflection part 30c, 530c Tab part 30s, 130s, 330s, 430s, 530s Diffuse lens element 430A Horizontal part 430B Vertical part 430b Bottom surface Ax, Ax , AxB axis

Claims (6)

In a vehicle lamp provided with a light source and a light guide body configured to incident light emitted from the light source, guide it in a required direction, and then emit it from the front surface.
The first and second light emitting elements are provided as the above light source, and the light source is provided.
The light guide body has a first incident portion for incident light from the first light emitting element as light directed forward in the required direction at a position in front of the first light emitting element in a required direction, and a position adjacent to the first incident portion. In the second incident portion where the light from the first light emitting element is incident as light toward the side in the required direction, and the light from the first light emitting element incident from the second incident portion is used as light toward the front in the required direction. Equipped with a total reflection part that totally reflects,
The second light emitting element is arranged at a position deviated from the position behind the required direction of the first incident portion to the side of the total reflection portion .
The light guide body is a lamp for a vehicle, characterized in that the light from the second light emitting element is incident on the total reflection portion as direct light . The above vehicle lighting equipment has the functions of a front turn signal lamp and a clearance lamp.
The first aspect of the present invention is characterized in that the first light emitting element is lit in the lighting mode of the front turn signal lamp and the second light emitting element is lit in the lighting mode of the clearance lamp. Vehicle lighting equipment. The first and second incident portions are formed in an annular shape at a plurality of locations of the light guide body.
The vehicle lamp according to claim 1 or 2, wherein the first light emitting element is arranged in each of the plurality of locations. The vehicle lighting fixture according to claim 3 , wherein the total reflection portion is formed so as to extend continuously over the plurality of locations. The vehicle lighting device according to claim 4, wherein the second light emitting element is arranged at a plurality of locations in a direction in which the total reflection portion extends. In a vehicle lamp provided with a light source and a light guide body configured to incident light emitted from the light source, guide it in a required direction, and then emit it from the front surface.
The first and second light emitting elements are provided as the above light source, and the light source is provided.
The light guide body has a first incident portion for incident light from the first light emitting element as light directed forward in the required direction at a position in front of the first light emitting element in a required direction, and a position adjacent to the first incident portion. In the second incident portion where the light from the first light emitting element is incident as light toward the side in the required direction, and the light from the first light emitting element incident from the second incident portion is used as light toward the front in the required direction. Equipped with a total reflection part that totally reflects,
The second light emitting element is arranged at a position deviated from the position behind the required direction of the first incident portion to the side of the total reflection portion.
The above vehicle lighting equipment has the functions of a front turn signal lamp and a clearance lamp.
A vehicle lighting tool characterized in that the first light emitting element is turned on in the lighting mode of the front turn signal lamp and the second light emitting element is turned on in the lighting mode of the clearance lamp.

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