JP6801344B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

Patent Document 1 discloses a vehicle lamp using a plurality of lenses having different focal lengths.
Then, in Patent Document 1, each lens is arranged so that the position in the front-rear direction with respect to each light source is different according to the focal length.

Japanese Unexamined Patent Publication No. 2012-174656

By the way, when a plurality of lenses are used, if a connecting portion is provided between the plurality of lenses and a component is used as one lens member in which the lenses are integrally connected at the connecting portion, the lenses are individually manufactured. It is possible to significantly reduce the manufacturing cost of parts as compared with the case of doing so.

However, as in Patent Document 1, when the positions of the lenses are different in the front-rear direction, the connecting portion that integrally connects the lenses cannot simply connect the ends of the lenses in a straight line in the horizontal direction. For example, it has a stepped shape, and if the connection portion is irradiated with light for some reason, glare may occur.

The present invention has been made in view of such circumstances, and is a vehicle lamp that suppresses the occurrence of glare in a vehicle lamp that includes a lens unit that integrates a plurality of lenses located at different positions in the front-rear direction. The purpose is to provide.

The present invention is grasped by the following configuration in order to achieve the above object.
(1) The vehicle lighting equipment of the present invention includes a first light emitting chip for a condensing unit, a second light emitting chip for a diffuser portion whose position in the front-rear direction is substantially the same as that of the first light emitting chip. The first light emitting chip and the first lens portion arranged on the front side of the second light emitting chip are provided, and the first lens portion has a first incident surface having a shape curved to the front side. A first lens formed so as to be located on the front side by a first distance from the first light emitting chip, and a second incident surface having a shape curved forward is shorter than the first distance from the second light emitting chip. A second lens formed so as to be located on the front side by a distance is formed between the first lens and the second lens, and connects the first lens and the second lens so as not to have a step. It is provided with a first connection portion.

(2) In the configuration of (1) above, the second lens portion is provided on the front side of the first lens portion, and the second lens portion is located on the front side of the first lens portion. A third lens formed as described above and a fourth lens formed so as to be located on the front side of the second lens are provided.

(3) In the configuration of (2) above, in the third lens, the third incident surface of the third lens is separated from the first exit surface of the first lens by a third distance in the front-rear direction. The fourth lens is formed on the second lens portion, and the fourth incident surface of the fourth lens is separated from the second exit surface of the second lens by a fourth distance in the front-rear direction. The second lens portion is formed so as to perform the above-mentioned fourth distance, which is longer than the third distance.

(4) In the configuration of (2) or (3), the second lens portion is one in which the third exit surface of the third lens and the fourth exit surface of the fourth lens are connected without a step. It has an exit surface.

(5) In the configuration of (3) or (4), the third light emitting chip provided on the opposite side of the second light emitting chip with the first light emitting chip sandwiched in the horizontal direction and the second light emitting chip in the horizontal direction. A fourth light emitting chip provided on the opposite side of the first light emitting chip with the light emitting chip interposed therebetween is provided, and the first lens portion is opposite to the second lens with the first lens sandwiched in the horizontal direction. The second lens is provided with a fifth lens formed so as to be located on the side and a sixth lens formed so as to be located on the opposite side of the first lens with the second lens sandwiched in the horizontal direction. The lens unit includes a seventh lens formed so as to be located on the front side of the fifth lens and an eighth lens formed so as to be located on the front side of the sixth lens. The fifth lens is formed in the first lens portion so that the fifth incident surface of the fifth lens is located on the front side by a distance substantially equal to the first distance from the third light emitting chip. The sixth lens is formed on the first lens portion so that the sixth incident surface of the sixth lens is located on the front side of the fourth light emitting chip by a distance substantially equal to the second distance. The 7-lens is formed in the second lens portion so that the seventh incident surface of the seventh lens is located on the front side of the fifth exit surface of the fifth lens by a distance substantially equal to the third distance. In the eighth lens, the second incident surface of the eighth lens is located on the front side of the sixth exit surface of the sixth lens by a distance substantially equal to the fourth distance. The first lens portion is formed in a lens portion, and the first lens portion is formed between the first lens and the fifth lens, and connects the first lens and the fifth lens so as not to have a step. It has two connecting portions and a third connecting portion formed between the second lens and the sixth lens and connecting the second lens and the sixth lens so as not to have a step.

(6) In the configuration of (5) above, the fifth incident surface has a shape curved forward.
The wall thickness of the second connecting portion from the first lens to the fifth lens is substantially constant, and the second connecting portion has a fifth region according to the curved shape of the fifth incident surface. , The second first region according to the curved shape of the first incident surface, the sixth incident surface has a shape curved forward, and the third connecting portion has the first The wall thickness from the 2nd lens to the 6th lens is substantially constant, and the 3rd connection portion has a 6th region according to the curved shape of the 6th incident surface and a curved state of the 2nd incident surface. It has a second second region according to the above.

(7) In any one of the configurations (1) to (6), the first connection portion has a substantially constant wall thickness from the first lens to the second lens, and the first connection portion has a substantially constant wall thickness. The connecting portion has a first first region according to the curved state of the first incident surface and a first second region according to the curved shape of the second incident surface. The first region is wider in the horizontal direction than the first second region.

According to the present invention, it is possible to provide a vehicle lamp that suppresses the occurrence of glare in a vehicle lamp that includes a lens unit that integrates a plurality of lenses located at different positions in the front-rear direction.

It is a top view of the vehicle provided with the vehicle lighting equipment of the 1st Embodiment which concerns on this invention. It is a horizontal sectional view of the lamp unit of 1st Embodiment which concerns on this invention. It is a horizontal sectional view for demonstrating the lamp unit of the 2nd Embodiment which concerns on this invention.

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 elements are numbered the same throughout the description of the embodiment.

Further, in the embodiment and the figure, unless otherwise specified, "front" and "rear" indicate the "forward direction" and "reverse direction" of the vehicle, respectively, and are "up", "down", and "left", respectively. "," Right "indicate the direction seen from the driver who gets on the vehicle, respectively.

The vehicle lighting fixtures of the embodiment according to the present invention are vehicle headlights (101R, 101L) provided on the left and right in front of the vehicle 102 shown in FIG. 1, and will be simply referred to as vehicle lighting fixtures below.

The vehicle lamp of the present embodiment includes a housing (not shown) opened on the front side of the vehicle and an outer lens (not shown) attached to the housing so as to cover the opening, and is formed by the housing and the outer lens. A lamp unit 10 (see FIG. 2) and the like are arranged in the lamp chamber.

FIG. 2 is a horizontal sectional view of the lamp unit 10.
Note that FIG. 2 is a cross-sectional view in the horizontal direction passing through the light emitting centers of the first light source 30 and the second light source 35.

As shown in FIG. 2, the lamp unit 10 includes a heat sink 20, a first light source 30 provided on the heat sink 20, a second light source 35 provided on the heat sink 20, a first light source 30, and a second light source 35. It includes a first lens unit 40 arranged on the front side and a second lens unit 50 arranged on the front side of the first lens unit 40.

In the present embodiment, the light from the first light source 30 forms a focused light distribution pattern such as a high beam light distribution pattern or a low beam light distribution pattern that is distributed to the center side, and the light from the second light source 35 However, for example, a diffused light distribution pattern such as a high beam light distribution pattern or a low beam light distribution pattern is formed.
Therefore, the first light source 30 is a light source for the condensing portion in the lamp unit 10, and the second light source 35 is a light source for the diffusing portion in the lamp unit 10.

Further, as for the lenses provided in each of the first lens unit 40 and the second lens unit 50, which will be described later, the lenses provided corresponding to the first light source 30 are lenses for the condensing unit. The lens provided corresponding to the second light source 35 is a lens for the diffuser.

(Heat sink 20)
As shown in FIG. 2, the heat sink 20 includes a base portion 21 in which the first light source 30 and the second light source 35 are arranged, and a plurality of heat radiating fins 22 formed on the rear side of the base portion 21.

For example, the heat sink 20 is preferably made of a material such as aluminum having high thermal conductivity and excellent heat dissipation.

The base portion 21 of the heat sink 20 is also a mounting portion for attaching the fixing leg portion 41 of the first lens portion 40 and the fixing leg portion 51 of the second lens portion 50.

(First light source 30 and second light source 35)
The first light source 30 includes a first substrate 31 provided on the base portion 21 of the heat sink 20 and a first light emitting chip 32 provided on the first substrate 31.
In the present embodiment, the LED chip which is a semiconductor type light emitting element is used for the first light emitting chip 32, but the LD chip (laser chip) which is a semiconductor type light emitting element is used instead of the LED chip. May be good.

The configuration of the second light source 35 is the same as that of the first light source 30, and the second substrate 36 provided on the base portion 21 of the heat sink 20 and the second light emitting chip 37 provided on the second substrate 36 In this embodiment, the LED chip is used for the second light emitting chip 37, but an LD chip (laser chip) may be used instead of the LED chip.

In the present embodiment, the first light source 30 and the second light source 35 individually have the first substrate 31 and the second substrate 36, but it is not necessary to separately provide the substrates, and a common substrate is used. You may.

Therefore, it is arbitrary whether the first light emitting chip 32 and the second light emitting chip 37 are provided on individual substrates (first substrate 31, second substrate 36) or on a common substrate. The first light emitting chip 32 for the light collecting portion and the second light emitting chip 37 for the diffuser portion whose position in the front-rear direction is substantially the same as that of the first light emitting chip 32 are provided so as to be arranged in the horizontal direction. You just have to.

(Second lens unit 50)
The second lens unit 50 includes a third lens 52 formed so as to be located on the front side of the first lens 42 of the first lens unit 40, and a front side of the second lens 43 of the first lens unit 40. A fourth lens 53, which is formed so as to be located at.

Further, the second lens portion 50 includes a pair of fixing legs 51 provided at the laterally outer ends of the third lens 52 and the fourth lens 53.

Then, when the fixing legs 51 are fixed to the heat sink 20, the third lens 52 and the fourth lens 52 and the fourth lens 52 and the fourth lens 52 are forward by a predetermined distance from the first light source 30 and the second light source 35 provided on the heat sink 20. The lens 53 is formed so as to be located.

However, instead of forming the fixing leg portion 51 on the second lens portion 50, the second lens portion 50 may be attached to the heat sink 20 by using a lens holder or the like.

In the second lens portion 50, the third lens 52 and the fourth lens 53 are formed as if the adjacent ends are directly connected to each other, and are formed between the third lens 52 and the fourth lens 53. There is no connection.

The third lens 52 is formed so that the third emission surface 52a that emits light formed in a planar shape and the light that is emitted from the third emission surface 52a to the front side form a predetermined condensing light distribution pattern. It is provided with a third incident surface 52b on which the light is incident.

Similarly, in the fourth lens 53, the fourth exit surface 53a that emits light formed in a planar shape and the light that is emitted forward from the fourth exit surface 53a form a predetermined diffused light distribution pattern. It is provided with a fourth incident surface 53b on which the light formed on the surface is incident.

The second lens unit 50 has one exit surface in which the third exit surface 52a and the fourth exit surface 53a are connected without a step.

However, the exit surface of the second lens unit 50 is not limited to a flat shape, and may be a curved surface shape or the like without a step according to a request such as a design.
In this case, the third exit surface 52a has a curved surface shape, and the light emitted from the third exit surface 52a forms a predetermined condensing light distribution pattern corresponding to the curved surface shape. 3 The incident surface 52b may be formed.

Similarly, the fourth incident surface 53b may be formed in a shape in which the light emitted from the fourth exit surface 53a forms a predetermined diffusion light distribution pattern according to the curved surface shape of the fourth exit surface 53a. ..

Further, in the present embodiment, the third incident surface 52b is such that the light emitted from the third exit surface 52a forms a condensed light distribution pattern according to the shape of the above-mentioned planar third emitting surface 52a. In addition, the central side in the horizontal direction is formed on a free curved surface that protrudes most rearward.

Similarly, in the present embodiment, the fourth incident surface 53b is such that the light emitted from the fourth exit surface 53a forms a diffused light distribution pattern according to the shape of the fourth exit surface 53a having a horizontal shape described above. It has two protruding surfaces formed on a free curved surface that protrudes most rearward to the left and right outside than the central side in the horizontal direction, and the two protruding surfaces are connected on the central side of the fourth incident surface 53b. It is formed in a shape having a concave surface recessed forward on the central side in the horizontal direction.

On the other hand, the positions of the portions of the third incident surface 52b and the fourth incident surface 53b that project most rearward are substantially the same in the front-rear direction.

(First lens unit 40)
The first lens unit 40 is located on the front side of the first light emitting chip 32 and the second light emitting chip 37, and is arranged on the rear side of the second lens unit 50.
The first lens portion 40 includes a first lens 42 formed so that the first incident surface 42b is located forward by a first distance X1 from the first light emitting chip 32, and a second incident surface 43b. The first lens 43 is formed between the first lens 42 and the second lens 43 and is formed so as to be located on the front side by a second distance X2 shorter than the first distance X1 from the light emitting chip 37. A first connecting portion 44 that connects the lens 42 and the second lens 43 is provided.

The first distance X1 is a point where the light emitting center of the first light emitting chip 32 and the axis extending in the front-rear direction (chip optical axis) passing through the light emitting center of the first light emitting chip 32 intersect the first incident surface 42b. The distance between them.
Similarly, in the second distance X2, the light emitting center of the second light emitting chip 37 and the axis extending in the front-rear direction (chip optical axis) passing through the light emitting center of the second light emitting chip 37 intersect the second incident surface 43b. The distance between.

Further, the first lens portion 40 includes a pair of fixing leg portions 41 provided at the laterally outer ends of the first lens 42 and the second lens 43.

When the fixing legs 41 are fixed to the heat sink 20, the first lens 42 and the second lens 42 and the second lens 42 and the second lens 42 are forward by a predetermined distance from the first light source 30 and the second light source 35 provided on the heat sink 20. The lens 43 is formed so as to be located.

However, instead of forming the fixing leg 41 on the first lens 40, the first lens 40 may be attached to the heat sink 20 by using a lens holder or the like.

The first lens 42 controls the light distribution so that the light emitted from the first light emitting chip 32 is appropriately incident on the third incident surface 52b of the third lens 52.
That is, the light distribution control is performed so that the light emitted from the first light emitting chip 32 does not go out of the third incident surface 52b.

For this reason, the first lens 42 has a shape of a first incident surface 42b curved forward and a shape of the first incident surface 42b so as to receive the light radiated from the first light emitting chip 32 without waste. Correspondingly, it includes a first exit surface 42a of a free curved surface that is formed so as to irradiate light appropriately toward the third incident surface 52b of the third lens 52.

Similarly, the second lens 43 performs light distribution control so that the light emitted from the second light emitting chip 37 is appropriately incident on the fourth incident surface 53b of the fourth lens 53.
That is, the light distribution control is performed so that the light emitted from the second light emitting chip 37 does not go out of the fourth incident surface 53b.

Therefore, the second lens 43 corresponds to the shape of the second incident surface 43b curved to the front side and the shape of the second incident surface 43b so as to receive the light radiated from the second light emitting chip 37 without waste. A second exit surface 43a of a free curved surface projecting forward is provided so as to appropriately irradiate light toward the fourth incident surface 53b of the fourth lens 53.

Here, since the light emitted from the fourth exit surface 53a of the fourth lens 53 forms a diffused light distribution pattern, the second lens 43 and the fourth lens 53 are arranged so that a widened light distribution can be easily formed. It is desirable that the distance between them is large.

On the other hand, since the light emitted from the third exit surface 52a of the third lens 52 forms a focused light distribution pattern, the first lens 42 and the third lens 52 are easily formed so that the light distribution does not spread. It is desirable that the distance between them is not large.

Therefore, as described above, by arranging the second lens 43 closer to the second light emitting chip 37 so that the second distance X2 is shorter than the first distance X1, the third lens 52 is arranged. The fourth incident surface 53b of the fourth lens 53 and the second exit surface 43a of the second lens 43 are larger than the third distance Y1 which is the distance between the incident surface 52b and the first exit surface 42a of the first lens 42. The fourth distance Y2, which is the distance between the lenses, is made longer.

The third distance Y1 is a point at the rearmost position on the third incident surface 52b of the third lens 52 and a point at the frontmost position on the first exit surface 42a of the first lens 42. It is the distance seen only in the front-back direction without considering the horizontal position deviation between the lens and the lens.
Similarly, the fourth distance Y2 is a point at the rearmost position on the fourth incident surface 53b of the fourth lens 53 and a position on the frontmost side on the second exit surface 43a of the second lens 43. It is the distance seen only in the front-back direction without considering the horizontal position deviation from the point.

By the way, in order to make the fourth distance Y2 longer than the third distance Y1, it is possible to provide the fourth lens 53 on the front side instead of bringing the second lens 43 closer to the second light emitting chip 37. Is.

However, in doing so, the fourth lens 53 protrudes forward from the third lens 52, so that the exit surface of the second lens portion 50 can be formed so as to be visible as one emission surface. It can't be done and it looks bad.

In this regard, if the second lens 43 is brought closer to the second light emitting chip 37 as in the present embodiment, the fourth lens 53 does not need to protrude more than the third lens 52, so that the second lens portion The 50 exit surfaces can be formed so as to be visible as one exit surface, and the appearance can be improved.

On the other hand, since the first lens 42 is provided closer to the first light emitting chip 32 than the third lens 52, the size of the first lens 42 is smaller than that of the third lens 52, and similarly, the second lens 43 is also smaller than the fourth lens 53. The size is smaller than that of the fourth lens 53 because it is provided near the second light emitting chip 37.

Since the horizontal positions of the first lens 42 and the second lens 43 are determined by the relationship between the third lens 52 and the fourth lens 53, the first lens 42 and the first lens 42 and the second lens 43 like the second lens portion 50. The ends of the two lenses 43 cannot be arranged close to each other so as to be directly connected to each other.
Therefore, in the first lens unit 40, as described above, the first lens 42 and the second lens 43 are connected by the first connection unit 44.

Specifically, the first connecting portion 44 has a first first region 44a according to the curved state of the first incident surface 42b and a first second region 44b according to the curved shape of the second incident surface 43b. And, the first first region 44a is wider than the first second region 44b in the horizontal direction.

Further, the wall thickness of the first connection portion 44 from the first lens 42 to the second lens 43 is substantially constant.

By forming the first connecting portion 44 in this way, it is possible to connect the first lens 42 and the second lens 43 so that there is no step, and for some reason, the first connecting portion 44 can be connected to the first connecting portion 44. Even when the light is irradiated, diffused reflection does not occur as in the case where the step portion is irradiated with the light, so that the occurrence of glare can be suppressed.
Further, by keeping the wall thickness of the first connecting portion 44 substantially constant, it is possible to prevent sink marks from occurring when the first lens portion 40 is molded.

As described above, according to the configuration of the first embodiment, the vehicle including the first lens unit 40 in which a plurality of lenses (first lens 42 and second lens 43) located at different positions in the front-rear direction are integrated. Even with a lighting fixture, the occurrence of glare can be suppressed.

(Second Embodiment)
Next, the vehicle lighting fixture of the second embodiment according to the present invention will be described with reference to FIG.
The description of the same configuration as that of the first embodiment may be omitted.

FIG. 3 is a horizontal sectional view for explaining the lamp unit 10 of the present embodiment.
However, although the illustration of the fixing leg 41 of the first lens portion 40, the fixing leg 51 of the second lens portion 50, the light source substrate, and the heat sink 20 is omitted, these are the first embodiments. It is the same as explained.

That is, the fixing leg 41 is provided at the horizontal outer end of the fifth lens 46 and the sixth lens 47 of the first lens portion 40, which will be described later, and the second lens portion 50 will be described later. Fixing legs 51 are provided at the laterally outer ends of the seventh lens 54 and the eighth lens 55.

As shown in FIG. 3, the lamp unit 10 of the present embodiment is further horizontal with the third light emitting chip 34 provided on the opposite side of the second light emitting chip 37 with the first light emitting chip 32 sandwiched in the horizontal direction. A fourth light emitting chip 39 provided on the opposite side of the first light emitting chip 32 with the second light emitting chip 37 interposed therebetween is provided.

The third light emitting chip 34 is an LED chip of a third light source that emits light that forms a condensing light distribution pattern.
However, as in the first embodiment, the third light emitting chip 34 may be an LD chip.

Although not shown, the third light source includes a third substrate provided on the base portion 21 of the heat sink 20 and a third light emitting chip 34, and the first light source 30 and the third light source are provided. The configuration is the same as that of the two light sources 35.

Further, the fourth light emitting chip 39 is an LED chip of a fourth light source that emits light forming a diffused light distribution pattern.
However, as in the first embodiment, the fourth light emitting chip 39 may be an LD chip.

Although not shown, the fourth light source includes a fourth substrate provided on the base portion 21 of the heat sink 20 and a fourth light emitting chip 39, and the first light source 30 and the first light source are provided. The configuration is the same as that of the two light sources 35.

Further, the first lens unit 40 sandwiches the second lens 43 in the horizontal direction with the fifth lens 46 formed so as to be located on the opposite side of the second lens 43 with the first lens 42 sandwiched in the horizontal direction. It includes a sixth lens 47 formed so as to be located on the opposite side of the first lens 42.

The fifth lens 46 is the same lens as the first lens 42, and the sixth lens 47 is the same lens as the second lens 43.

In addition, the second lens portion 50 includes a seventh lens 54 formed so as to be located on the front side of the fifth lens 46 and an eighth lens formed so as to be located on the front side of the sixth lens 47. It is equipped with 55.

The seventh lens 54 is the same lens as the third lens 52, and the eighth lens 55 is the same lens as the fourth lens 53.

As can be seen from the above configurations, in the second embodiment, the configuration for the condensing portion and the configuration for the diffusing portion of the first embodiment are increased by one, and the condensing light distribution pattern and the diffusion are increased by one. The amount of light in the light distribution pattern can be increased.

Therefore, more detailed arrangement and the like are the same as described in the first embodiment, and in the fifth lens 46, the fifth incident surface 46b of the fifth lens 46 is the first distance from the third light emitting chip 34. The first lens portion 40 is formed so as to be located on the front side by a distance substantially equal to X1 (see FIG. 2), and in the sixth lens 47, the sixth incident surface 47b of the sixth lens 47 emits fourth light. The first lens portion 40 is formed so as to be located on the front side by a distance substantially equal to the second distance X2 (see FIG. 2) from the chip 39.

Further, the seventh lens 54 has a second lens 54 so that the seventh incident surface 54b of the seventh lens 54 is located forward from the fifth exit surface 46a of the fifth lens 46 by a distance substantially equal to the third distance Y1. The eighth lens 55 is formed on the lens portion 50, and the eighth incident surface 55b of the eighth lens 55 is forward of the sixth exit surface 47a of the sixth lens 47 by a distance substantially equal to the fourth distance Y2. It is formed on the second lens portion 50 so as to be located.

The first lens portion 40 is formed between the first lens 42 and the fifth lens 46, and is connected to the second connecting portion 45 that connects the first lens 42 and the fifth lens 46 so as not to have a step. It is formed between the second lens 43 and the sixth lens 47, and has a third connecting portion 48 that connects the second lens 43 and the sixth lens 47 so as not to have a step.

Specifically, the fifth incident surface 46b also has a shape curved forward like the first incident surface 42b, and the second connecting portion 45 follows the curved shape of the fifth incident surface 46b. It has a fifth region 45a and a second first region 45b that follows the curved shape of the first incident surface 42b.

Further, the second connection portion 45 is also formed to have a substantially constant wall thickness from the first lens 42 to the fifth lens 46, similarly to the first connection portion 44.

Further, the sixth incident surface 47b also has a shape curved forward like the second incident surface 43b, and the third connecting portion 48 follows the curved shape of the sixth incident surface 47b. It has a region 48a and a second second region 48b according to the curved state of the second incident surface 43b.

Similar to the first connection portion 44 and the second connection portion 45, the third connection portion 48 is also formed to have a substantially constant wall thickness from the second lens 43 to the sixth lens 47.

In the second embodiment having the above configuration, since the second connection portion 45 and the third connection portion 48 are configured so as not to have a step that causes glare, the occurrence of glare is suppressed. , It is possible to increase the amount of light in the focused light distribution pattern and the diffused light distribution pattern.

Also in the second embodiment, the second lens portion 50 is a single flat surface in which the third exit surface 52a, the fourth exit surface 53a, the seventh exit surface 54a, and the eighth exit surface 55a are connected without a step. Although it has an exit surface of a shape, as described in the first embodiment, the exit surface of the second lens unit 50 may be a curved surface that is curved without a step according to a required design. Good.

Although the present invention has been described above based on specific embodiments, the present invention is not limited to the above embodiments.
In the above embodiment, it is assumed that the lens unit has a two-lens type optical system having a first lens unit 40 and a second lens unit 50. For example, depending on a vehicle lamp, a lens unit having a plurality of lenses may be provided. In some cases, only one lens is required, and even in such a case, glare can be suppressed by forming the connection between the lenses as in the connection portion of the above embodiment.
Therefore, the present invention is not limited to the one using two lens members.

As described above, the present invention is not limited to specific embodiments, and those modified or improved without departing from the technical idea are also included in the technical scope of the invention. This is clear to those skilled in the art from the description of the scope of claims.

10 Lighting unit 20 Heat sink 21 Base 22 Radiation fin 30 First light source 31 First substrate 32 First light emitting chip 34 Third light emitting chip 35 Second light source 36 Second substrate 37 Second light emitting chip 39 Fourth light emitting chip 40 First Lens portion 41 Fixing leg 42 First lens 42a First exit surface 42b First incident surface 43 Second lens 43a Second exit surface 43b Second incident surface 44 First connection portion 44a First first region 44b First 2nd region 45 2nd connection portion 45a 5th region 45b 2nd 1st region 46 5th lens 46a 5th exit surface 46b 5th incident surface 47 6th lens 47a 6th exit surface 47b 6th incident surface 48 3rd connection 48a 6th region 48b 2nd 2nd region 50 2nd lens 51 Fixing leg 52 3rd lens 52a 3rd exit surface 52b 3rd incident surface 53 4th lens 53a 4th exit surface 53b 4th Incident Surface 54 7th Lens 54a 7th Incident Surface 54b 7th Incident Surface 55 8th Lens 55a 8th Incident Surface 55b 8th Incident Surface 101L, 101R Vehicle Headlight 102 Vehicle

Claims (7)

The first light emitting chip for the light collector and
A second light emitting chip for a diffuser whose position in the front-rear direction is substantially the same as that of the first light emitting chip,
A first light emitting chip and a first lens portion arranged on the front side of the second light emitting chip are provided.
The first lens unit is
A first lens formed so that a first incident surface having a curved shape on the front side is located on the front side by a first distance from the first light emitting chip.
A second lens formed so that the second incident surface having a curved shape on the front side is located on the front side by a second distance shorter than the first distance from the second light emitting chip.
For vehicles, the first connecting portion formed between the first lens and the second lens and connecting the first lens and the second lens so as not to have a step is provided. Lighting equipment. A second lens portion arranged on the front side of the first lens portion is provided.
The second lens unit is
A third lens formed so as to be located on the front side of the first lens, and
The vehicle lighting fixture according to claim 1, further comprising a fourth lens formed so as to be located on the front side of the second lens. Said second lens unit, according to claim 2, characterized in that the fourth emission surface of the third emission surface and the fourth lens of said third lens has a single exit surface that led without steps Vehicle lighting equipment described in. The third lens is formed on the second lens portion so that the third incident surface of the third lens is separated from the first exit surface of the first lens by a third distance in the front-rear direction. Ori,
The fourth lens is formed on the second lens portion so that the fourth incident surface of the fourth lens is separated from the second exit surface of the second lens by a fourth distance in the front-rear direction. Ori,
The vehicle lamp according to claim 2 or 3 , wherein the fourth distance is longer than the third distance. A third light emitting chip provided on the opposite side of the second light emitting chip with the first light emitting chip sandwiched in the horizontal direction,
A fourth light emitting chip provided on the opposite side of the first light emitting chip with the second light emitting chip sandwiched in the horizontal direction is provided.
The first lens unit is
A fifth lens formed so as to be located on the opposite side of the second lens with the first lens sandwiched in the horizontal direction.
A sixth lens formed so as to be located on the opposite side of the first lens with the second lens sandwiched in the horizontal direction is provided.
The second lens unit is
A seventh lens formed so as to be located on the front side of the fifth lens, and
An eighth lens formed so as to be located on the front side of the sixth lens is provided.
The fifth lens is formed on the first lens portion so that the fifth incident surface of the fifth lens is located on the front side by a distance substantially equal to the first distance from the third light emitting chip.
The sixth lens is formed on the first lens portion so that the sixth incident surface of the sixth lens is located on the front side of the fourth light emitting chip by a distance substantially equal to the second distance.
The seventh lens is provided on the second lens portion so that the seventh incident surface of the seventh lens is located on the front side by a distance substantially equal to the third distance from the fifth exit surface of the fifth lens. Has been formed and
The eighth lens is provided on the second lens portion so that the eighth incident surface of the eighth lens is located on the front side of the sixth exit surface of the sixth lens by a distance substantially equal to the fourth distance. Has been formed and
The first lens unit is
A second connecting portion formed between the first lens and the fifth lens and connecting the first lens and the fifth lens so as not to have a step.
A claim characterized by having a third connecting portion formed between the second lens and the sixth lens and connecting the second lens and the sixth lens so as not to have a step. Item 4. The vehicle lighting equipment according to item 4 . The fifth incident surface has a shape curved forward.
The wall thickness of the second connection portion from the first lens to the fifth lens is substantially constant.
The second connection portion
A fifth region according to the curved shape of the fifth incident surface and
It has a second first region according to the curved shape of the first incident surface, and has.
The sixth incident surface has a shape curved forward.
The wall thickness of the third connection portion from the second lens to the sixth lens is substantially constant.
The third connection part is
A sixth region according to the curved shape of the sixth incident surface and
The vehicle lighting fixture according to claim 5, further comprising a second second region according to the curved shape of the second incident surface. The wall thickness of the first connection portion from the first lens to the second lens is substantially constant.
The first connection portion
A first region according to the curved shape of the first incident surface and
It has a first second region according to the curved shape of the second incident surface, and has.
The vehicle lamp according to any one of claims 1 to 6, wherein the first first region is wider than the first second region in the horizontal direction.

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