JP2017021892A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture which suppresses a dark part occurring on the outside of a lens part without affecting a light amount of the light radiated frontward from the scyphiform lens part.SOLUTION: A vehicular lighting fixture at least includes: a semiconductor type light source 160; a scyphiform lens part 60 arranged in front of the light source 160, and for radiating direct light from the light source 160 entering from an incident part 63a (incident surface 62a) as parallel light from an emission part 63b (emission surface 62c) frontward; and a total reflection prism for transmitted light (first total reflection prism 67 for transmitted light) arranged being separated from the lens part 60, and for totally reflecting the light which has transmitted the lens part 60 and is emitted form the outside surface (reflection surface 62b) of the lens part 60 frontward. Also, it at least includes a total reflection prism for direct light (first total reflection prism 65 for direct light) arranged being separated from the lens part 60, and for totally reflecting the direct light from the light source 160 which does not enter the incident part 63a (incident surface 62a) frontward.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicular lamp.

  Conventionally, for example, a vehicular lamp such as a tail lamp, a stop lamp, a tail / stop lamp, a clearance lamp, a turn signal lamp, a rear fog lamp, and a daytime running lamp. There is known a vehicular lamp that irradiates forward with parallel light at a portion (see Patent Document 1).

  In the vehicular lamp using such a cup-shaped lens unit, for example, the lens unit emits light toward the center side of the measurement screen, so that the lens unit emits bright light like a point light source, There may be a portion that does not emit light on the outside of the lens portion or a portion that emits light but has a low luminous intensity, that is, a dark portion.

On the other hand, a vehicular lamp is also known which has a light guide structure that guides part of the light incident on the cup-shaped lens part to the outside of the lens part, and irradiates the light forward also on the outer part of the lens part. (See Patent Document 2).
In Patent Document 2, the light-emitting surface and the non-light-emitting surface are formed with a light guide structure, but the light emitting area in the surface light emission state can be increased by changing the design of the light guide structure, so that it is difficult to form a dark part. It seems to be possible.
However, in the method of Patent Document 2, since the light incident on the lens unit is branched to the outside of the lens unit, the light is irradiated from the lens unit to the center side of the measurement screen as compared with the case where no light guide structure is provided. There is a problem that the amount of light decreases.

JP 2014-060041 A JP 2014-060040 A

  The present invention has been made in view of such circumstances, and a vehicle that suppresses the occurrence of a dark portion outside the lens portion without affecting the amount of light emitted forward from the cup-shaped lens portion. The purpose is to provide lighting equipment.

The present invention is grasped by the following composition in order to achieve the above-mentioned object.
(1) A vehicular lamp according to the present invention has a semiconductor light source and a cup-shaped light that is disposed in front of the light source and that irradiates the direct light from the light source incident from the incident part forward as parallel light from the emission part. A lens unit, and a total reflection prism for transmitted light that is disposed apart from the lens unit and that totally transmits forward the light emitted from the outer surface of the lens unit through the lens unit. A vehicular lamp characterized by the above.

(2) A vehicular lamp according to the present invention has a semiconductor-type light source and a cup-shaped light that is disposed in front of the light source and irradiates the direct light from the light source incident from the incident part forward as parallel light from the emission part. A lens unit; and a total reflection prism for direct light that is disposed away from the lens unit and that totally reflects the direct light from the light source that does not enter the incident unit to the front.

(3) The vehicular lamp according to the present invention is a cup-shaped light source that is disposed in front of a semiconductor-type light source and that irradiates the direct light from the light source incident from the incident part forward as parallel light from the emission part. A lens part, a total reflection prism for transmitted light, which is disposed apart from the lens part, transmits the lens part, and totally reflects light emitted from the outer surface of the lens part to the front, and is separated from the lens part And a direct-light total reflection prism that totally reflects the direct light from the light source that is not incident on the incident part to the front.

(4) A vehicular lamp according to the present invention includes a semiconductor-type first light source and a second light source that are spaced apart from each other, and a first light source that is disposed in front of the first light source and is incident from an incident portion. A cup-shaped first lens unit that irradiates forward light as parallel light from the emitting part, and a direct light from the second light source that is arranged in front of the second light source and incident from the incident part are parallel from the emitting part. Direct light from the second light source that is disposed between the first lens unit and the second lens unit and that is not incident on the incident unit of the second lens unit. From the first light source which is disposed between the first lens unit and the second lens unit and does not enter the incident unit of the first lens unit. A first direct reflection total reflection prism that totally reflects direct light forward; The first direct reflection light total reflection prism and the second direct light total reflection prism are disposed between the first lens portion and the first lens portion so as to totally reflect forward the light emitted from the outer surface of the first lens portion. A total reflection prism for one transmitted light, and a first total reflection prism for first direct light and a second total reflection prism for second direct light, which are transmitted through the second lens portion and outside the second lens portion. A total reflection prism for second transmitted light that totally reflects light emitted from the side face forward, and the first total reflection prism for direct light is separated from the second lens portion in the vicinity of the second lens portion. The first transmitted light total reflection prism is disposed on the first lens portion side away from the first direct light total reflection prism, and the second direct light total reflection prism is The second lens in the vicinity of the first lens unit Spaced apart from, the second transmitted light total reflection prism is spaced from said second direct light total reflection prism in the second lens unit side.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle lamp which suppressed that a dark part generate | occur | produces on the outer side of a lens part can be provided, without affecting the light quantity of the light irradiated ahead from a cup-shaped lens part.

It is a top view of vehicles provided with a vehicular lamp of an embodiment concerning the present invention. It is the front view which looked at the vehicle lamp of embodiment which concerns on this invention from the front. It is a partial expanded sectional view of the lamp unit of embodiment which concerns on this invention. It is the partially expanded back view which looked at the lens plate of embodiment which concerns on this invention from the back surface. It is sectional drawing of the part of a lamp unit in alignment with the DD line | wire of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings. The same number is attached | subjected to the same element through the whole description of embodiment. In the embodiments and drawings, “front” and “rear” indicate “forward direction” and “reverse direction” of the vehicle, respectively, and “up”, “down”, “left” unless otherwise specified. "And" Right "respectively indicate directions viewed from the driver who gets on the vehicle.

The vehicle lamp according to the embodiment of the present invention is a vehicle headlamp (101R, 101L) provided on each of the left and right front of the vehicle 102 shown in FIG. 1, and the vehicle lamps provided on the left and right are Since it is only symmetrical, the vehicle headlamp 101R provided on the right side will be described as an example.
In the following description, the vehicle headlamp 101R provided on the right side is simply referred to as a vehicle lamp.

FIG. 2 is a front view of the vehicular lamp according to the present embodiment as viewed from the front.
As shown in FIG. 2, the vehicular lamp according to the present embodiment includes a housing 10 opened on the front side of the vehicle and an outer lens (not shown) attached to the housing 10 so as to cover the opening. Various lamp units and the like are arranged in the lamp chamber formed by.

  Specifically, in order from the vehicle outer side (the left side in the figure), a turn lamp unit 20, a diffusion light distribution unit 30, and a light distribution unit 40 that forms a low beam light distribution pattern and a high beam light distribution pattern by switching shades. A lamp unit 50 serving as a clearance lamp and a daytime running lamp is disposed.

  However, it is not always necessary to provide the turn lamp unit 20, the diffusion light distribution unit 30, and the light distribution unit 40, and these units may be configured as, for example, other vehicle lamps.

(Lighting unit)
The lamp unit 50 will be described in detail later, but as shown in FIG. 2, a lens plate 51 having a plurality (four) of cup-shaped lens portions 60, 70, 80, 90, and not shown. A plurality of semiconductor-type light sources (LED chips) disposed on the back side of the lens plate 51.
For example, the lens plate 51 can be manufactured by injection molding using an acrylic resin or a polycarbonate resin.
An inner lens (not shown) is provided on the front side of the lens plate 51.

As can be seen from FIG. 2, there is a portion between the cup-shaped lens portion 60 and the cup-shaped lens portion 70 where the cup-shaped lens portion cannot be formed due to space (see the dotted line area X). There is a dark part in such a part X.
In the following, a method of causing the dark portion to easily emit light and suppressing the occurrence of the dark portion will be described. Before that, a cup-shaped lens portion and the like will be described.

  Since the basic shapes of the cup-shaped lens portions 60, 70, 80, 90 are the same, the basic components such as the cup-shaped lens portion will be described by taking the lens portion 70 as an example.

  FIG. 3 is a partially enlarged cross-sectional view in which a part of the lamp unit 50 is enlarged, and specifically shows a cross-sectional view of the lens portion 70 portion passing through the center of the lens portion 70.

As shown in FIG. 3, the lens unit 70 has a cup shape in cross section, and is disposed in front of a light source 170 (LED chip) disposed on a substrate 100 on which power supply wiring and the like are formed.
Note that the lens unit 70 is not cup-shaped only in a part of the cross section shown in FIG. 3, but has a cup shape when viewed in any cross-section passing through the center. Even a cup shape.
Further, since the lens portions 60, 80, and 90 are similar to the lens portion 70, they are cup-shaped when viewed three-dimensionally.
However, as shown in FIG. 2, the lens portion 60 has a shape lacking in part due to space. However, as described above, the basic design shape is the lens portions 70, 80, The same as 90.

  In the present embodiment, one substrate 100 is shared with a light source 160 (LED chip), a light source 180 (LED chip), and a light source 190 (LED chip) (not shown) provided corresponding to the other lens units 60, 80, 90. However, it is not necessary to use a single substrate, and the light source 160, the light source 170, the light source 180, and the light source 190 provided corresponding to each lens unit 60, 70, 80, 90 are individually provided. A substrate may be provided.

  In this embodiment, the semiconductor-type light sources 160, 170, 180, and 190 using LED chips are used. However, the types of light sources are not limited to LED chips, and the light sources 160, 170, 180, and 190 are not limited. However, a semiconductor light source using a semiconductor laser chip or an EL (organic EL) chip may be used.

  As shown in FIG. 3, the lens unit 70 includes a central lens unit 71 (see range A) and an outer lens unit 72 (see range B) outside the central lens unit 71.

(Center lens part)
The central lens unit 71 has an incident surface 71a on which direct light from the light source 170 facing the light emitting surface 170a of the light source 170 is incident, and an emission surface 71b that irradiates the incident light forward.

The incident surface 71a is formed as a free-form surface that protrudes toward the light source 170, and performs light distribution control so that when the light enters the central lens unit 71, the light is directed to the front side as parallel light.
On the other hand, the emission surface 71b is formed in a plane so as to irradiate the incident light as parallel light forward as parallel light.

(Outer lens part)
The outer lens unit 72 includes an incident surface 72 a on which direct light from the light source 170 is formed so as to continuously extend from the outer periphery of the incident surface 71 a of the central lens unit 71 toward the light source 170, and an outer surface of the lens unit 70. The reflecting surface 72b that reflects the light incident from the incident surface 72a to the front side and the emission surface 72c that irradiates the light reflected frontward by the reflecting surface 72b to the front are formed.

The light distribution control is performed by the reflection surface 72b so that the light is emitted forward as parallel light when the light is emitted from the emission surface 72c.
In the present embodiment, a stepped shape is formed on the emission surface 72c, but this is provided with a fine diffusion structure for slightly diffusing the state of the irradiated light, which is essential. It may be a smooth surface, not a requirement, and light is not diffused greatly by this fine diffusion structure, and basically light is irradiated forward as parallel light.

  As can be seen from the description of the central lens portion 71 and the outer lens portion 72 described above, the cup-shaped lens portion 70 is directly irradiated from the light source 170 including the incident surface 71 a of the central lens portion 71 and the incident surface 72 a of the outer lens portion 72. An incident surface 73a where light enters, and an exit surface 71b of the central lens portion 71 and an exit surface 72c of the outer lens portion 72 that irradiate the direct light from the light source 170 incident from the incident portion 73a forward in the state of parallel light. And an emission portion 73b.

  Although not shown, the other lens portions 60, 80, 90 are also the same as the lens portion 70, so that the cup-shaped lens portions 60, 70, 80, 90 are respectively incident portions 63a, 73a, 83a. , 93a, and direct light from the light sources 160, 170, 180, and 190 is emitted forward as parallel light from the respective emission portions 63b, 73b, 83b, and 93b.

Next, a description will be given specifically of a configuration for bringing the portion X where the dark portion shown in FIG. 2 is likely to occur into a light emitting state.
FIG. 4 shows the surface of the lens plate 51 facing the light source, that is, the back surface side of the lens plate 51, so that the cup-shaped lens portions 60, 70, 80, and 90 are mainly visible. FIG.

  In FIG. 4, the portion corresponding to the portion X (dotted line region X in FIG. 2) where the dark part easily occurs shown in FIG. 2 is shown as the dotted line region X, but as shown in FIG. A reflective prism 150 (a plurality of reflective prisms), which will be described in detail below, is formed on the back side of the corresponding lens plate 51.

  5 is a cross-sectional view when the lamp unit 50 shown in FIG. 2 is cut along the line DD in FIG. 4, that is, the lens unit 60 (first lens unit) and the lens unit 70 (second lens). It is sectional drawing when the lamp unit 50 is cut | disconnected so that the dotted line area | region X between (parts) may be crossed.

  As shown in FIG. 5, not all of the light from the light source 160 (first light source) corresponding to the lens unit 60 (first lens unit) is incident on the incident part 63a (incident surface 61a and incident surface 61b). Some of the light cannot enter the incident portion 63a and travels toward the lens portion 70 (second lens portion) as shown as the light ray L1.

  Further, as shown in FIG. 5, direct light (see the light beam L2) from the light source 160 incident from the incident portion 63a (incident surface 62a) of the lens portion 60 (first lens portion) is emitted from the emitting portion 63b (exit surface 62c). ) Is reflected on the light emitting portion 63b (light emitting surface 62c) side and irradiated from the light emitting portion 63b (light emitting surface 62c) side. However, a part of the light is not reflected by the reflecting surface 62b, but passes through the lens unit 60 as it is and is shown as a light beam L2 ′, and is directed toward the lens unit 70 (second lens unit). It will be.

On the other hand, although the light beam is not shown on the lens unit 70 side, the lens unit 70 is the same as that described for the lens unit 60.
That is, a part of light from the light source 170 (second light source) corresponding to the lens unit 70 (second lens unit) cannot enter the incident unit 73a and goes to the lens unit 60 (first lens unit) side. It will be.
Further, the direct light from the light source 170 (second light source) incident from the incident portion 73a (incident surface 72a) of the lens portion 70 (second lens portion) is forward as parallel light from the emitting portion 73b (exit surface 72c). Most of the light is reflected on the emission part 73b (emission surface 72c) side and is emitted from the emission part 73b (emission surface 72c) by the reflection surface 72b formed so as to be irradiated with light. The light of the part is not reflected by the reflecting surface 72b, but passes through the lens part 70 as it is and goes toward the lens part 60 (first lens part).

  Therefore, direct light from the light source 160 (first light source) and the light source 170 (second light source) that has not entered the incident part 63a and the incident part 73a, or light that has passed through the lens part 60 and the lens part 70 (leakage light). By effectively utilizing the light and emitting light that tends to be a dark part, it is possible to suppress the occurrence of the dark part without affecting the amount of light emitted forward from the cup-shaped lens parts 60, 70. it can.

  The reflection prism 150 (a plurality of reflection prisms) in FIG. 4 described above is a direct light or lens from the light source 160 (first light source) and the light source 170 (second light source) that has not entered the incident portion 63a and the incident portion 73a. This is for effectively utilizing the light (leakage light) transmitted through the part 60 and the lens part 70 to emit the portion X (see FIGS. 2 and 4) that tends to be a dark part. This will be described with reference to FIG.

  As shown in FIG. 5, between the lens unit 60 (first lens unit) and the lens unit 70 (second lens unit), the light source 160 (first lens) that has not entered the lens unit 60 (first lens unit). The first direct-light total reflection prism 65 that totally reflects the direct light from the light source) forward, and the direct light from the light source 170 (second light source) that has not entered the lens unit 70 (second lens part) forward And a second direct reflection total reflection prism 75 that totally reflects the light.

  More specifically, the first direct light total reflection prism 65 is arranged in the vicinity of the lens unit 70 (second lens unit) and apart from the lens unit 70 (second lens unit). Similarly, the second direct-reflection total reflection prism 75 is arranged in the vicinity of the lens unit 60 (first lens unit) and apart from the lens unit 60 (first lens unit).

Here, if the first direct light total reflection prism 65 is positioned in the vicinity of the lens unit 60 (first lens unit) such as the position of the second direct light total reflection prism 75, FIG. The first direct-light total reflection prism 65 must be projected toward the substrate 100 to a position where the light beam L1 shown in FIG. 2 is shielded, so that the light transmitted through the lens unit 60 (first lens unit) (Ray L2 ′) is also blocked by the first direct-light total reflection prism 65.
In addition, when the second direct-light total reflection prism 75 is positioned in the vicinity of the lens unit 70 (second lens unit), the lens is the same as described in the first direct-light total reflection prism 65. The light passing through the portion 70 (second lens portion) is blocked.

  Therefore, the first direct reflection total reflection prism 65 is positioned near the lens unit 60 (first lens unit), and the second direct reflection total reflection prism 75 is positioned near the lens unit 70 (second lens unit). As a result, a dark portion where light is not irradiated forward still remains between the first direct light total reflection prism 65 and the second direct light total reflection prism 75.

  The first direct-light total reflection prism 65 is intentionally separated from the lens unit 60 (first lens unit) by a long distance so that a dark portion where such light is not irradiated forward is not left. The light total reflection prism 75 is separated from the lens unit 70 (second lens unit) by a long distance so that it can be formed as a total reflection prism that does not protrude too much toward the substrate 100 side.

The first direct-light total reflection prism 65 is arranged close to the lens unit 70 (second lens unit) in order to take a distance. However, the first direct-light total reflection prism 65 is arranged to be close to the lens unit 70 (first lens). If the first lens direct reflection light total reflection prism 65 overlaps with a portion that overlaps a part of the reflection surface 72b of the second lens portion), the portion where the first direct-light total reflection prism 65 overlaps becomes a connecting portion that does not function as the reflection surface 72b. Light leaks to the first direct-light total reflection prism 65 side, and as a result, the amount of light emitted forward from the lens unit 70 (second lens unit) decreases.
The same applies between the second direct-reflection total reflection prism 75 and the lens unit 60 (first lens unit).

  Accordingly, although the first direct light total reflection prism 65 and the second direct light total reflection prism 75 are provided in the vicinity of the lens unit 70 (second lens unit) and the lens unit 60 (first lens unit), respectively. It is preferable that the lens unit 70 (second lens unit) and the lens unit 60 (first lens unit) are arranged so as to be separated from each other.

  As described above, the first direct light total reflection prism 65 and the second direct light total reflection prism 75 are transmitted through the lens unit 70 (second lens unit) and the lens unit 60 (first lens unit), respectively. For example, since it is formed on the back surface side of the lens plate 51 so as not to block the leaked light such as the light beam L2 ′ in FIG. 5, the leaked light is used to further make the first direct-reflection total reflection prism 65. By providing the total reflection prism so as to emit light between the first direct light total reflection prism 75 and the second direct light total reflection prism 75, it is possible to suitably suppress the occurrence of a dark portion.

  Specifically, as shown in FIG. 5, a lens unit 60 (first lens unit) is transmitted between the first direct-light total reflection prism 65 and the second direct-light total reflection prism 75 to transmit the lens. The first transmitted light total reflection prism 67 that totally reflects forward the light emitted from the outer surface (reflection surface 62b) of the portion 60 (first lens portion) and the lens portion 70 (second lens portion). There is provided a second transmitted light total reflection prism 77 that totally reflects forward the light emitted from the outer surface (reflection surface 72b) of the lens unit 70 (second lens unit).

  In the present embodiment, as the first transmitted light total reflection prism 67 and the second transmitted light total reflection prism 77, two total reflection prisms are provided on the back surface side of the lens plate 51.

  For the same reason as described in the first direct light total reflection prism 65 and the second direct light total reflection prism 75, the first transmitted light total reflection prism 67 and the second transmitted light total reflection prism 77 are also provided. The first transmitted light total reflection prism 67 is provided on the lens unit 70 (second lens unit) side, and the second transmitted light total reflection prism 77 is provided on the lens unit 60 (second lens unit) side. Yes.

  Further, as shown in FIG. 5, when a plurality of first reflection light total reflection prisms 67 are provided, the amount of protrusion to the substrate 100 side is adjusted to allow uniform light emission when viewed from the front side. In the second total reflection prism 77 for transmitted light, the amount of protrusion toward the substrate 100 side is adjusted so that the second light transmission total reflection prism 77 appears to emit light uniformly when viewed from the front side. Is preferred.

  Note that the number of total reflection prisms to be provided as the first transmission light total reflection prism 67 and the second transmission light total reflection prism 77 may be appropriately determined in consideration of the size of the range to be covered. For this reason, when the range to be covered is narrow, it may be one each. Conversely, when the range to be covered is wide, the number may be increased to three or four. good.

  Furthermore, in the present embodiment, as shown in FIG. 4, out of direct light from a light source 180 (not shown) corresponding to the lens unit 80, direct light that totally reflects light that does not enter the incident portion 83 a of the lens unit 80. A total reflection prism 85 for light is also provided.

As can be seen from FIG. 4, the transmitted light total reflection prism is not provided as a total reflection prism corresponding to the lens unit 80 due to a space or the like.
Thus, it is not always necessary to provide the direct light total reflection prism and the transmitted light total reflection prism as a set to the cup-shaped lens portion, and either one may be provided.

  As described above, a plurality of total reflection prisms (first direct-light total reflection prism 65, second direct-light total reflection prism 75, direct-light total reflection prism 85) in the portion X that tends to be a dark portion in FIG. The first transmitted light total reflection 67 prism and the second transmitted light total reflection prism 77) are provided, and the light emitted from the light source 160 (first light source), the light source 170 (second light source), and the light source 180 is provided. Among them, the lens unit 60 (first lens unit), the lens unit 70 (second lens unit), and the light that is not effectively used by the lens unit 80 are effectively used to suppress the occurrence of dark portions. The generation of dark portions can be suppressed without affecting the amount of light emitted from the lens 60 (first lens unit), the lens unit 70 (second lens unit), and the lens unit 80.

By the way, in the above description, the configuration for suppressing the occurrence of the dark portion has been described mainly for the portion X that tends to be a dark portion, but it goes without saying that the same configuration may be applied to other portions.
For example, in this embodiment as well, as shown in FIG. 4, transmission for suppressing the occurrence of dark parts by utilizing leaked light that passes through the lens unit 60 in the vicinity of the lens unit 60 and spaced from the lens unit 60. A total reflection prism 68 for light is provided.

  Further, a direct-light total reflection prism 95 is provided in order to suppress the dark part by utilizing direct light from a light source 190 (not shown) that is not incident on the incident part 93a of the lens part 90.

Further, a total reflection prism 97 for transmitted light is provided to suppress the occurrence of a dark part by utilizing the leaked light transmitted through the lens unit 90.
In this way, a direct light total reflection prism or a transmitted light total reflection prism may be provided as necessary.

Although the present invention has been described based on the specific embodiments, the present invention is not limited to the above embodiments.
In the above description, the case where four cup-shaped lens portions are specifically provided on the lens plate has been described. However, more lens portions such as five or six are provided on the lens plate, and each lens is provided. It may be a vehicular lamp in which a light source is provided for the portion, or vice versa, on the contrary, it may be a vehicular lamp configured with one lens portion and one light source.

  However, since the visibility of the lamp itself is naturally higher when the number of lens units is larger, it is preferable to provide a plurality of lens units and a plurality of light sources corresponding to the respective lens units. It is.

  Further, the light source is not necessarily limited to one light emitting chip, and a plurality of light emitting chips (for example, 2 chips or 4 chips) may constitute one light source.

  On the other hand, the above embodiment has been described by taking an example of an automatic four-wheel vehicle lamp. However, the present invention is not limited to an automatic four-wheel vehicle, and the present invention is applied to a vehicle lamp such as an automatic motorcycle. Also good.

  Further, the vehicular lamp of the present invention is not limited to a clearance lamp or a daytime running lamp, but may be used for a tail lamp, a stop lamp, a tail / stop lamp, a turn signal lamp, a rear fog lamp, and the like.

In the above description, the front and rear directions have been described as the directions viewed from the driver who rides the vehicle. However, even in the case of a vehicle lamp of the type arranged on the rear side of the vehicle such as a tail lamp, The expressions “front” and “rear” in the form are the same if the light-irradiated side is the front and the light source side is the rear.
Therefore, the front in the claims should be understood to mean the side irradiated with light with reference to the light source.

  Thus, the present invention is not limited to a specific embodiment, and modifications and improvements that do not depart from the technical idea are also included in the technical scope of the invention. This is from the description of the claims for those skilled in the art.

DESCRIPTION OF SYMBOLS 10 Housing 20 Turn lamp unit 30 Diffusion light distribution unit 40 Light distribution unit 50 Lamp unit 51 Lens plate 60, 70, 80, 90 Lens part 65 1st direct reflection total reflection prism 67 1st transmitted light total reflection prism 75 1st 2 Total reflection prism for direct light 77 Second total reflection prism for transmitted light 68, 97 Total reflection prism for transmitted light 85, 95 Total reflection prism for direct light 71 Central lens portion 71a Incident surface 71b Output surface 72 Outer lens portion 72a Incident Surface 72b Reflective surface 72c Emission surface 63a, 73a, 83a, 93a Incident part 63b, 73b, 83b, 93b Emission part 100 Substrate 160, 170, 180, 190 Light source 170a Light emission surface 101L, 101R Vehicle headlamp (vehicle lamp) )
102 Vehicle 150 Reflective prism L1, L2, L2 ′ Ray

Claims (4)

A semiconductor light source,
A cup-shaped lens unit that is disposed in front of the light source and that irradiates the direct light from the light source incident from the incident unit forward as parallel light from the output unit;
A vehicle that includes at least a total reflection prism for transmitted light that is disposed apart from the lens unit and that totally transmits forward the light transmitted through the lens unit and emitted from the outer surface of the lens unit. Lamps. A semiconductor light source,
A cup-shaped lens unit that is disposed in front of the light source and that irradiates the direct light from the light source incident from the incident unit forward as parallel light from the output unit;
A vehicular lamp, comprising: a direct-light total reflection prism disposed at a distance from the lens unit and totally reflecting direct light from the light source that is not incident on the incident unit. A semiconductor light source,
A cup-shaped lens unit that is disposed in front of the light source and that irradiates the direct light from the light source incident from the incident unit forward as parallel light from the output unit;
A total reflection prism for transmitted light that is disposed apart from the lens unit and totally reflects forward the light transmitted through the lens unit and emitted from the outer surface of the lens unit;
A vehicular lamp, comprising: a direct-light total reflection prism disposed at a distance from the lens unit and totally reflecting direct light from the light source that is not incident on the incident unit. A semiconductor-type first light source and a second light source, which are spaced apart from each other;
A cup-shaped first lens unit that is disposed in front of the first light source and that irradiates the direct light from the first light source incident from the incident unit forward as parallel light from the output unit;
A cup-shaped second lens unit that is disposed in front of the second light source and that irradiates the direct light from the second light source incident from the incident unit forward as parallel light from the output unit;
A second direct reflection light total reflection prism that is disposed between the first lens portion and the second lens portion and totally reflects directly the direct light from the second light source that does not enter the incident portion of the second lens portion; ,
A first direct reflection total reflection prism that is disposed between the first lens unit and the second lens unit and totally reflects the direct light from the first light source that does not enter the incident unit of the first lens unit. When,
The first direct-light total reflection prism and the second direct-light total reflection prism are disposed between the first direct-light total reflection prism and the light transmitted through the first lens unit and emitted from the outer surface of the first lens unit. A total reflection prism for first transmitted light to be reflected;
The first direct light total reflection prism and the second direct light total reflection prism are disposed between the first direct light total reflection prism and the light transmitted through the second lens unit and emitted from the outer surface of the second lens unit. A total reflection prism for second transmitted light that reflects,
The first direct-light total reflection prism is disposed in the vicinity of the second lens unit so as to be separated from the second lens unit,
The first transmitted light total reflection prism is disposed on the first lens unit side away from the first direct light total reflection prism,
The second direct-light total reflection prism is disposed in the vicinity of the first lens unit and spaced from the second lens unit,
The vehicular lamp, wherein the second transmitted light total reflection prism is disposed on the second lens portion side away from the second direct light total reflection prism.

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