JP7000205B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

The irradiation direction and irradiation shape of the light emitted from the spot lamp are controlled so that the irradiation width of the light changes at the position of the pedestrian walking on the road shoulder, or the light is emitted in order toward the position of the pedestrian. , A vehicle spot lamp that makes the driver aware of the existence of a pedestrian who should avoid a collision with the vehicle has been conventionally proposed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-16609

However, if the irradiation width of the light changes at the pedestrian position or the light is irradiated in order toward the pedestrian position, the line-shaped light is not always emitted to the pedestrian position. Since there is no such area (because there is a non-irradiated area in front of the pedestrian position), the driver may not be able to properly recognize the pedestrian position.

Therefore, an object of the present invention is to obtain a vehicle lamp that can always irradiate a pedestrian position with line-shaped light without generating a non-irradiated area on the front side of the pedestrian position.

In order to achieve the above object, the vehicle lamp according to claim 1 according to the present invention has a plurality of first light sources arranged without gaps in the first direction, and a first light source different from the first direction. A plurality of second light sources arranged without gaps in the two directions, a first slit portion having the first direction as the longitudinal direction and allowing a part of the light emitted from the first light source to pass through, and the first slit portion. The direction 2 is the longitudinal direction, and the second slit portion that allows a part of the light emitted from the second light source to pass through and the light that has passed through the first slit portion are transmitted and irradiated to the front side of the vehicle. It includes one lens and a second lens that transmits light that has passed through the second slit portion and irradiates the front side of the vehicle so that a part of the light emitted by the first lens overlaps the light.

According to the first aspect of the present invention, the light emitted from a plurality of first light sources arranged without gaps in the first direction and passing through the first slit portion whose first direction is the longitudinal direction is emitted. It passes through the first lens and is irradiated from the first lens to the front side of the vehicle. Then, the light emitted from the plurality of second light sources arranged without gaps in the second direction different from the first direction and passing through the second slit portion in which the second direction is the longitudinal direction is the second. It passes through the lens and is irradiated from the second lens to the front side of the vehicle. Here, a part of the light emitted from the second lens overlaps with the light emitted from the first lens. Therefore, there is no non-irradiated region on the front side of the pedestrian position, and the pedestrian position is always irradiated with linear light.

As described above, according to the present invention, the non-irradiated region where the light is not irradiated is not generated on the front side of the pedestrian position, and the pedestrian position can always be irradiated with the linear light.

It is a front view which shows the vehicle which provided the lighting fixture for a vehicle which concerns on this embodiment. It is a perspective view which shows the lamp for a vehicle which concerns on this embodiment. It is a side view which shows the lamp for a vehicle which concerns on this embodiment. (A) It is a front view which shows the 1st light source of the lamp for vehicles which concerns on this embodiment. (B) It is a front view which shows the 1st slit part of the lighting fixture for a vehicle which concerns on this embodiment. It is explanatory drawing which shows the region of the light which irradiates with the lamp for a vehicle which concerns on this embodiment. It is a perspective view which shows the lamp for a vehicle which concerns on a reference example. It is a side view which shows the lamp for a vehicle which concerns on a reference example. It is explanatory drawing which shows the region of the light which irradiates with the lamp for a vehicle which concerns on a reference example. (A) It is a front view which shows the light source of the light fixture for a vehicle which concerns on 1st comparative example. (B) It is explanatory drawing which shows the region of the light which irradiates with the lamp for a vehicle which concerns on 1st comparative example. (A) It is a front view which shows the light source of the light fixture for a vehicle which concerns on 2nd comparative example. (B) It is a front view which shows the slit part of the lighting fixture for a vehicle which concerns on 2nd comparative example. (C) It is explanatory drawing which shows the region of the light which irradiates with the lamp for a vehicle which concerns on 2nd comparative example.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. For convenience of explanation, the arrow UP shown appropriately in each figure is the vehicle upward direction, the arrow FR is the vehicle front direction, and the arrow RH is the vehicle right direction. Therefore, in the following explanation, when the up / down, front / rear, and left / right directions are described without special mention, they indicate the up / down in the vehicle up / down direction, the front / rear in the vehicle front / rear direction, and the left / right in the vehicle left / right direction (vehicle width direction). do.

As shown in FIG. 1, the vehicle 12 is provided with a pair of left and right headlamp units 14 for ensuring a field of view on the front side of the vehicle 12. That is, the headlamp unit 14R is arranged at the right front end of the vehicle 12, and the headlamp unit 14L is arranged at the left front end of the vehicle 12.

The headlamp unit 14R and the headlamp unit 14L are configured to include a low beam unit 16 arranged outside in the vehicle width direction and a high beam unit 18 arranged inside in the vehicle width direction, respectively, in the vehicle width direction. It is said to be symmetrical. The low beam unit 16 is configured to irradiate the low beam light distribution area on the road surface on the front side of the vehicle 12 with light (visible light).

The high beam unit 18 is configured to irradiate light (visible light) on the high beam light distribution area on the diagonally forward side above the low beam light distribution area irradiated by the low beam unit 16. As an example, the vehicle lamp 10 according to the present embodiment is arranged inside the high beam unit 18 in the vehicle width direction.

As shown in FIGS. 2 and 3, the vehicle lighting equipment 10 according to the present embodiment includes a first light source 20 that irradiates light (visible light), a second light source 30 that irradiates light (visible light), and the like. A first slit portion 22 that allows a part of the light emitted from the first light source 20 to pass through, a second slit portion 32 that allows a part of the light emitted from the second light source 30 to pass through, and a first slit portion 22. It includes a first lens 24 that transmits light that has passed through and irradiates the front side of the vehicle, and a second lens 34 that transmits light that has passed through the second slit portion 32 and irradiates the front side of the vehicle.

As shown in FIG. 4A, the first light source 20 is a plurality of (for example, three) light emitting diodes (LEDs) arranged in a row without gaps in the vertical direction as the first direction. It is composed of 21 and is regarded as a high-luminance light source. The first light source 20 is a so-called 1-package 3-chip type in which three LEDs 21 are arranged in a row on a first substrate 23 electrically connected to a control unit (not shown) described later. The configuration is such that no gap is formed between the LEDs 21.

Similarly, the second light source 30 is composed of a plurality of (for example, three) light emitting diodes (LEDs: not shown) arranged in a row without gaps in the left-right direction as a second direction different from the first direction. It is said to be a high-intensity light source. The second light source 30 is also a so-called 1 package 3 in which three LEDs are arranged in a row on a second substrate 33 (see FIG. 2) electrically connected to a control unit (not shown) described later. It is a chip type and has a configuration in which no gap is formed between each LED.

The number of LEDs 21 provided on the first substrate 23 of the first light source 20 is not limited to the three shown in the figure. Similarly, the number of LEDs provided on the second substrate 33 of the second light source 30 is not limited to three. Further, in the first light source 20 shown in FIG. 4A, each LED 21 is schematically drawn in a square shape for simplification of illustration, but is particularly limited to this square shape. It's not a thing.

As shown in FIGS. 2 and 4B, the first slit portion 22 is a light-shielding member having a rectangular flat plate shape (a rectangular shape having a longitudinal direction in the left-right direction when viewed from the front). It is formed on the left half side of the 40 with a predetermined length and width with the vertical direction as the first direction as the longitudinal direction. Then, as shown in FIG. 2, the second slit portion 32 is formed on the right half side of the light-shielding member 40 with a predetermined length and width with the left-right direction as the second direction as the longitudinal direction. There is.

As shown in FIG. 3, the light-shielding member 40 is arranged on the front side of the first light source 20 (LED 21) and the second light source 30 (LED) with a predetermined gap. Further, the predetermined lengths and widths of the first slit portion 22 and the second slit portion 32 are appropriately set so that the face of the pedestrian P, which will be described later, is not exposed to light.

Further, as shown in FIGS. 2 and 3, the first substrate 23 of the first light source 20 and the second substrate 33 of the second light source 30 are spaced apart from each other in the left-right direction on the front surface of the metal heat dissipation member 42. It is provided open (side by side). The heat radiating member 42 has a substantially rectangular flat plate-shaped main body portion 44 whose front-rear direction of the vehicle is the plate thickness direction, and the rear surface of the first substrate 23 and the rear surface of the second substrate 33 are respectively on the front surface of the main body portion 44. It is attached.

On the rear surface of the main body 44 of the heat radiating member 42, rectangular flat plate-shaped fins 46 whose width direction is the plate thickness direction are integrally provided, and a plurality of (for example, 7) fins are projected side by side in the left-right direction. The plurality of fins 46 allow heat generated from the first light source 20 and the second light source 30 to be dissipated to the atmosphere.

As shown in FIGS. 2 and 3, the first lens 24 is formed in a curved surface shape in which the front surface 26 thereof is convex forward and the rear surface 28 is planar in plan view and side view. It is formed. Therefore, the first lens 24 makes the light incident on the rear surface 28 passing through the first slit portion 22 formed in the light-shielding member 40 transmitted from the rear surface 28 to the front surface 26 to obtain parallel light, and the front surface thereof. Light (visible light) considered to be parallel light is emitted from 26 to the front side of the vehicle 12.

The lens diameter R1 of the first lens 24 is, for example, R1 = φ30. Then, the first lens 24 is located on the front side of the light-shielding member 40 and at a position facing the first slit portion 22 in the front-rear direction at a predetermined distance (distance from the first light source 20 to the rear surface 28 D1: for example, D1 =. It is arranged with a space of 30 mm).

Similarly, the second lens 34 is also formed in a curved surface shape in which the front surface 36 thereof is convex forward and the rear surface 38 is formed in a planar shape in both plan view and side view. Therefore, the second lens 34 makes the light incident on the rear surface 38 through the second slit portion 32 formed in the light-shielding member 40 transmitted from the rear surface 38 to the front surface 36 to obtain parallel light, and the front surface thereof. Light (visible light) considered to be parallel light is irradiated from 36 to the front side of the vehicle 12.

The lens diameter R1 of the second lens 34 is the same as the lens diameter R1 of the first lens 24, and for example, R1 = φ30. The second lens 34 is located on the front side of the light-shielding member 40 and at a position facing the second slit portion 32 in the front-rear direction at the same predetermined distance as the first lens 24 (from the second light source 30 to the rear surface 38). It is arranged with an interval D1: for example, D1 = 30 mm).

Here, the light emitted from the second lens 34 illuminates the front side of the vehicle more than the light emitted from the first lens 24. More specifically, as shown in FIG. 5, the light emitted from the first lens 24 (irradiation light L1) is targeted by the vehicle 12 (for example, a pedestrian, a bicycle, or the like that may collide with the vehicle 12). (Hereinafter referred to as "pedestrian P"), the line is always continuous toward the existing position.

The light emitted from the second lens 34 (irradiation light L2) has a line shape extending in the left-right direction at the position where the pedestrian P exists, and the light emitted from the second lens 34 (irradiation region). ) Overlaps a part (tip portion) of the light (irradiation area) emitted from the first lens 24 (hereinafter, the overlapped area is referred to as "connection area M"). That is, the light (irradiation light L) emitted by the vehicle lamp 10 according to the present embodiment has a substantially "T" shape formed by combining two line-shaped lights.

Further, the vehicle 12 provided with the vehicle lighting tool 10 according to the present embodiment is provided with an image sensor (not shown) as a detection means for detecting the pedestrian P and a control unit (not shown) for controlling each part. Has been done. Therefore, the control unit controls the lighting (and extinguishing) of the first light source 20 and the second light source 30 based on the detection result of the image sensor toward the pedestrian P who may collide with the vehicle 12. It is designed to irradiate an irradiation light L (drawing pattern) having a substantially "T" shape.

Next, the operation of the vehicle lamp 10 according to the present embodiment having the above configuration will be described.

At least while the vehicle 12 is running at night (temporarily at a signal, railroad crossing, etc.) with the light source (not shown) of the low beam unit 16 turned on (the low beam light distribution area on the front side of the vehicle 12 is irradiated with light). (Including the case of stopping at), the image sensor continues to detect the pedestrian P walking on the shoulder.

Then, when the image sensor detects (recognizes) a pedestrian P who may collide with the vehicle 12, for example, asking for an opportunity to cross the road while walking on the shoulder on the right side of the traveling direction of the vehicle 12, the control unit detects (recognizes) the pedestrian P. , The first light source 20 and the second light source 30 of the vehicle lighting tool 10 are turned on. Then, a part of the light emitted from the first light source 20 passes through the first slit portion 22 formed in the light-shielding member 40, and further passes through the first lens 24 from the rear to the front.

Then, a part of the light emitted from the second light source 30 passes through the second slit portion 32 formed in the light-shielding member 40, and further passes through the second lens 34 from the rear to the front. As a result, as shown in FIG. 5, the line-shaped irradiation light L1 is irradiated toward the pedestrian P, and the line-shaped irradiation light extending in the left-right direction at the position where the pedestrian P exists. L2 is irradiated.

Here, the first comparative example and the second comparative example will be described. As shown in FIG. 9A, in the light source 50 according to the first comparative example, four LEDs 51 are arranged in a row with a gap S1 in the vertical direction. Therefore, as shown in FIG. 9B, the irradiation light L3 emitted by the light source 50 is on the front side (may include the existence position) of the existence position (pedestrian position) of the pedestrian P. Non-irradiated region K1 is generated in.

That is, the light source 50 cannot always irradiate the existing position of the pedestrian P with continuous line-shaped irradiation light. Therefore, the driver of the vehicle 12 may be delayed in noticing the presence of the pedestrian P.

Further, as shown in FIG. 10A, the light source 52 according to the second comparative example includes a lower light source 54 in which three LEDs 53 are arranged in a row without gaps in the vertical direction, and three LEDs 55. It is composed of an upper light source 56 arranged in a row without a gap in the left-right direction. However, a gap S2 is formed between the lower end of the LED 55 in the upper light source 56 and the upper end of the LED 53 in the lower light source 54.

Therefore, even if the light emitted from the light source 52 passes through the substantially “T” -shaped slit portion 58 shown in FIG. 10 (B), as shown in FIG. 10 (C), the lower light source 54 Between the irradiated irradiation light L4 and the irradiation light L5 irradiated by the upper light source 56, that is, on the front side (may include the existence position) of the existence position (pedestrian position) of the pedestrian P. Non-irradiated region K2 is generated.

That is, even with this light source 52, it is not possible to constantly irradiate the existing position of the pedestrian P with continuous line-shaped irradiation light. Therefore, the driver of the vehicle 12 may be delayed in noticing the presence of the pedestrian P.

On the other hand, in the vehicle lamp 10 according to the present embodiment, the first slit portion 22 and the first lens 24 are provided for the first light source 20, and the second slit portion 32 and the first lens 24 are provided for the second light source 30. Two lenses 34 are provided. That is, in the vehicle lamp 10 according to the present embodiment, the first light source 20, the first slit portion 22 and the first lens 24, and the second light source 30, the second slit portion 32 and the second lens 34 are independent. It is provided.

Therefore, as shown in FIG. 5, a part of the irradiation light L2 irradiated by the second lens 34 can be superimposed on the tip end portion of the irradiation light L1 irradiated by the first lens 24 (a connection region M is formed). can do). That is, it is possible to form the irradiation light L having a substantially “T” shape by the irradiation light L1 and the irradiation light L2.

Therefore, a non-irradiated region in which light is not irradiated does not occur on the front side (which may include the existing position) of the existing position (pedestrian position) of the pedestrian P, and the existing position of the pedestrian P is not generated. It is possible to constantly irradiate a line-shaped irradiation light L without interruption. Therefore, the driver of the vehicle 12 can easily recognize the direction in which the pedestrian P exists, and the visibility to the pedestrian P can be improved.

On the pedestrian P side, the area irradiated with the light expands in the left-right direction, and the light extends toward the approaching vehicle 12, so that it becomes easier to recognize the approach of the vehicle 12 (). There is an advantage (preventive safety can be achieved). Further, since it is possible to prevent the pedestrian P from being exposed to light by setting the length and width of the first slit portion 22 and the second slit portion 32, the pedestrian P can be prevented from being exposed to the light L. It is also possible to prevent the feeling of glare and intimidation.

Further, since the vehicle lamp 10 according to the present embodiment has the first slit portion 22 and the second slit portion 32, the irradiated light is emitted as compared with the one having no slit portion. It is possible to prevent the occurrence of a problem that the light is diffused and does not look like a line. That is, according to the vehicle lamp 10 according to the present embodiment, it is possible to irradiate a clear line-shaped light (irradiation light L).

Finally, the vehicle lamp 11 according to the reference example will be described. The same parts as those in the present embodiment are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

As shown in FIGS. 6 and 7, the vehicle lamp 11 according to this reference example is composed of only the first light source 20, the first slit portion 22, and the first lens 24. Therefore, as shown in FIG. 8, the light emitted by the vehicle lamp 11 is only the irradiation light L1, even if the front side (existence position) of the existence position (pedestrian position) of the pedestrian P is included. There is no non-irradiated area that is not irradiated with light. Therefore, the driver of the vehicle 12 can easily recognize the direction in which the pedestrian P exists, and the visibility to the pedestrian P can be improved.

However, in the case of the vehicle lamp 11 according to this reference example, since it is necessary to extend the tip of the irradiation light L1 to the position where the pedestrian P exists (or to a position beyond the position), the first The distance D2 from the light source 20 to the first lens 24 (rear surface 28) needs to be longer than the distance D1 in the present embodiment (for example, D2 = 40 mm). Further, the lens diameter R2 of the first lens 24 also needs to be larger than the lens diameter R1 in the present embodiment (for example, R2 = φ40).

In other words, in the vehicle lamp 10 according to the present embodiment, the distance D1 from the first light source 20 to the first lens 24 (rear surface 28) can be made shorter than the distance D2 in the reference example, and the first The lens diameter R1 of one lens 24 can also be made smaller than the lens diameter R2 in the reference example. That is, according to the vehicle lamp 10 according to the present embodiment, there is an advantage that the size of the lamp itself (mainly the size in the front-rear direction of the vehicle) can be made smaller than that of the vehicle lamp 11 according to the reference example. ..

The vehicle lamp 10 according to the present embodiment has been described above with reference to the drawings, but the vehicle lamp 10 according to the present embodiment is not limited to the one shown in the figure and does not deviate from the gist of the present invention. Within the range, the design can be changed as appropriate. For example, the first light source 20, the first slit portion 22, and the first lens 24, and the second light source 30, the second slit portion 32, and the second lens 34 may be arranged upside down.

Further, the LEDs 21 constituting the first light source 20 and the LEDs constituting the second light source 30 are arranged in one row without gaps, but the present invention is not limited to this, and the LEDs are arranged in two rows without gaps, for example. May be. Further, since the second light source 30 is provided independently of the first light source 20, the direction different from the left-right direction can be obtained by changing the arrangement of the LEDs and the shape (extending direction) of the second slit portion 32. It may be adapted to irradiate a line-shaped light extending in (for example, a direction intersecting the front-back direction and the left-right direction).

10 Vehicle lighting equipment 20 1st light source 22 1st slit part 24 1st lens 30 2nd light source 32 2nd slit part 34 2nd lens

Claims (1)

A plurality of first light sources arranged without gaps in the first direction,
A plurality of second light sources arranged without gaps in a second direction different from the first direction,
The first slit portion, in which the first direction is the longitudinal direction and a part of the light emitted from the first light source is passed through,
The second direction is the longitudinal direction, and a second slit portion that allows a part of the light emitted from the second light source to pass through, and a second slit portion.
A first lens that transmits light that has passed through the first slit portion and irradiates the front side of the vehicle.
A second lens that transmits light that has passed through the second slit portion and irradiates the front side of the vehicle so that a part of the light is overlapped with the light emitted by the first lens.
Vehicle lighting fixtures equipped with.

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