TWI681144B - Lighting device - Google Patents

Abstract

The present invention is a lighting device. Its subject is to provide: it can be used as a simple device to form different lamps. It can be easily installed in a limited space, and the degree of freedom in design is also increased. A lighting device that greatly reduces costs.

The solution is to install the unit as a unit for receiving the light emitted by each LED (21) in the lighting device (10) formed by a plurality of LEDs (21) that emit to different colors and are mounted on the vehicle body A lens array (30) is formed. The lens array (30) is provided with: a light projection portion (out of the LEDs (21) corresponding to the white LEDs (21A), which emits the incident white light toward the front ( 32), and corresponding to the red LED (21B), the identification part (33) which can diffuse the incident red light from the outside recognizablely.

Description

Lighting device

The invention relates to a lighting device formed by a plurality of light-emitting elements that emit light in different colors and is mounted on a vehicle body, and particularly relates to a lighting device having both headlights and taillights of a railway vehicle.

Conventionally, as such a lighting device for a vehicle, for example, a headlight or a taillight that is equipped in a railway vehicle has been known. Here, the headlights are called front signs in the related regulations of the railway. They illuminate in front of the direction of travel of the vehicle at night, etc., which improves the visibility of driving. In addition, you can check the point from the front of the vehicle at night The composition of the lamp. In addition, the taillights are called rear signage lights in the relevant laws and regulations of the railway, and display the rear of the vehicle with lights or reflections, and notify other vehicles that are walking behind the existence of the structure. In this way, the functions of the headlights and taillights are completely different.

The headlights or taillights have different light distribution characteristics or light colors through the above functions. That is, in the headlamp, the light distribution characteristics for the long distance to the front are required, and the light color system is generally set to white. In addition, in the taillights, the degree of recognition from the outside is close The light distribution characteristic of the distance is sufficient, and the light color is set to red. Along with this, the headlights or taillights are each configured by individual lamps (for example, refer to Patent Documents 1 and 2).

However, in railway vehicles, after reaching the terminal station, in order to change the direction of travel, there is a case where the front vehicle and the last vehicle are switched. In order to cope with this situation, there are also front (rear) ends of the foremost (last rear) vehicle, as shown in FIG. 14(a), each of the two headlights 1 and taillights 2 are installed on both sides, depending on the direction of travel At the front and rear of the vehicle, one of the headlight 1 and the taillight 2 is selectively turned on.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Publication No. 2013-141953

[Patent Document 2] Japanese Patent Application Publication No. 2013-010467

However, as in the prior art disclosed in the aforementioned Patent Documents 1 and 2, the headlights and taillights have completely different configurations. In the limited exterior space of the vehicle, the space for the headlights and taillights must be individually secured. Therefore, there are problems in the review of the vehicle body equipment space, and there are problems with design limitations. In addition, because of the need to prepare individual lamps, the number of components or the number of installation work has also increased, but it also has the problem of incurring high costs.

However, it is considered to be convenient if the front vehicle and the rear vehicle are switched between the front vehicle and the rear vehicle. However, as shown in FIG. 14(b), in the method of combining the headlight 1 and the taillight 2 alone, as a result, the arrangement space of each lamp must be prepared, and there is no reduction in the number of components. Therefore, it is desired how to realize the functions of the headlight and the taillight as one device with a simple structure.

The present invention focuses on the structure of the problems that have been solved by the above-mentioned prior art, and its purpose is to provide: different lamps including headlights or taillights can be constructed as a simple device. In a limited space, it can be easily installed, and the degree of freedom in design becomes greater, and the cost of lighting equipment can be greatly reduced.

As the content of the present invention for achieving the aforementioned object, there are the following inventions.

[1] A lighting device (10) for a vehicle, which is mounted on the body of a vehicle and has a lighting device (10) composed of a plurality of light-emitting elements (21) that emit light in different colors, and is characterized by having: The plurality of light-emitting elements (21) is an optical member (30) configured as a unit to receive each emitted light; the optical member (30) is provided with: Among the plurality of light-emitting elements (21), corresponding to the emission A light emitting element (21A) of a certain color light, a light projecting portion (32) that emits the light of the same color toward the front, and a light emitting element corresponding to emitting light of another color (21B), the identification part (33) of the light of the other color that can be diffusibly recognized from the outside.

[2] The vehicle lighting device (10) as described in [1] above, characterized in that the optical member (30) is formed of a base body (31); the light projection portion (32) and the marking portion ( 33) It is arranged to be arranged integrally on the base body (31) according to the specific layout of the corresponding light-emitting elements (21).

[3] The vehicle lighting device (10) as described in [2] above, characterized in that each of the light-emitting elements (21) is on a substrate and is arranged such that the optical axis faces the same direction; the optical The member (30) is the base (31) which is placed parallel to the front of the substrate.

[4] The vehicle lighting device (10) as described in [3] above, characterized in that the exit surfaces of each of the light projecting portion (32) and the marking portion (33) are formed at least on the base body (31) ) On the same plane on the surface side.

[5] The vehicle lighting device (10) according to the above [1], [2], [3] or [4], characterized in that the light projection portion (32) is made of a lens, and the aforesaid mark The part (33) is made of a light guide.

Next, the function according to the aforementioned solution means will be described.

In the lighting device (10) described in [1] above, there are a plurality of light-emitting elements (21) that emit light in different colors, but the optical member (30) that receives the light emitted by each light-emitting element (21) is used as a unit Constituted by this The optical member (30) is provided with a light projecting portion (32) and a marking portion (33) that realize different light distribution characteristics. Therefore, it is not only a combination of different lighting devices, but also a variety of lamps in one lighting device (10).

In particular, the direction of the light emitting section (32) and the marking section (33) each emitting light is not simply different. The light projection part (32) emits light incident from the light emitting element (21A) that emits light of a certain color toward the front. On the other hand, the identification part (33) diffuses self-emission of other colors discernably from the outside The light incident by the light emitting element (21B) of the light has completely different functions including each light distribution characteristic, but can be realized by one unit.

As such an optical member (30), for example, as described in the aforementioned [2], it has one base (31), and the corresponding base (31) is formed to match each corresponding light-emitting element (21) The light projection unit (32) and the identification unit (33) may be arranged in a specific layout. Here, the light projecting portion (32) and the marking portion (33) are other, for example, combined to form another individual as a unit, but if arranged in advance and integrally arranged on the base body (31), the number of members can be reduced The number of pieces or the number of assembly work.

In addition, the mounting position or arrangement of the plurality of light-emitting elements (21) is not particularly limited, but for example, as described in the aforementioned [3], if each is arranged on one substrate, the optical axis is arranged in the same direction The state of the direction can be handled as a piece of light source substrate. In addition, with regard to the substrate itself, all the light-emitting elements (21) are also in the same direction, so that they can be easily assembled and assembled, and can be easily produced. In addition, the optical member (30) is the substrate (31) as arranged in each light emitting element (21) The front of the substrate may be arranged in parallel.

Furthermore, as described in the aforementioned [4], if the exit surfaces of each light projecting portion (32) and the marking portion (33) are formed at least on the same plane on the surface side of the base (31), a The configuration of the optical member (30) of the unit itself, and the arrangement relative to the light source substrate may be simplified.

The configuration of the light projecting portion (32) and the marking portion (33) is specifically, for example, as described in the aforementioned [5], for the light projecting portion (32), if a lens is used, the When the light guide is used for the marking part (33), the function including each light distribution characteristic can be easily realized, and the cost can be further reduced.

According to the lighting device according to the present invention, different lamps including headlights or taillights can be constructed as a simple device, which can be easily installed in a limited space while being free in design The degree also becomes larger, and the cost can be greatly reduced.

10‧‧‧Lighting

11‧‧‧Lamp body

12‧‧‧Storage Department

12a‧‧‧Outer periphery

13‧‧‧heat sink

14‧‧‧heat sink

20‧‧‧LED substrate

20A‧‧‧LED substrate

20B‧‧‧LED substrate

21‧‧‧LED

21A‧‧‧White LED

21B‧‧‧Red LED

30‧‧‧lens array

30A‧‧‧lens array

30B‧‧‧lens array

30C‧‧‧Lens Array

31‧‧‧Matrix

32‧‧‧Projection Department

33‧‧‧ Marking Department

33A‧‧‧Marking Department

33B‧‧‧Marking Department

321‧‧‧ exit surface

322‧‧‧hole

323‧‧‧recess

324‧‧‧Perimeter

figure 1

An exploded perspective view showing the lighting device according to the first embodiment of the present invention.

figure 2

A perspective view showing a lighting device according to the first embodiment of the present invention.

image 3

A perspective view showing the layout of the lighting device according to the first embodiment of the present invention is shown from the back side.

Figure 4

A perspective view showing the layout of the lighting device according to the first embodiment of the present invention from the front.

Figure 5

A perspective view showing the light emission state of the lighting device according to the first embodiment of the present invention.

Figure 6

A perspective view showing the layout of the lighting device according to the second embodiment of the present invention from the front.

Picture 7

An exploded perspective view showing a lamp body and an LED board of a lighting device according to a third embodiment of the present invention.

Picture 8

A perspective view showing the light emission state of the lighting device according to the third embodiment of the present invention.

Picture 9

An exploded perspective view showing a lamp body and an LED board of a lighting device according to a fourth embodiment of the present invention.

Picture 10

A perspective view showing the layout of the lighting device according to the fourth embodiment of the present invention from the back side.

Picture 11

A perspective view showing the layout of the lighting device according to the fourth embodiment of the present invention from the front.

Figure 12

A perspective view showing the light emitting state of the lighting device according to the fourth embodiment of the present invention.

Figure 13

A perspective view showing the layout of the lighting device according to the fifth embodiment of the present invention from the front.

Figure 14

An explanatory diagram showing the arrangement of headlights and taillights in a conventional railway vehicle.

Hereinafter, various embodiments representing the present invention will be described based on the drawings.

1 to 5 show the first embodiment of the present invention.

The lighting device 10 according to this embodiment includes a plurality of light-emitting elements that are mounted on the body of a vehicle and emit light in different colors. Hereinafter, as an example, a lamp having both a headlight and a taillight suitable for a railway vehicle as a vehicle will be described.

The lighting device 10 is, for example, installed in the omitted illustration Among railway vehicles, the front (rear) body of the front (rear) vehicle of the cab is provided. For the front-most vehicle, both sides of the front wall below the bridge are provided with mounting portions for each of the lighting devices 10, and the lighting devices 10 are installed in a pair of left and right in a state facing forward in the mounting portion. The size of the mounting part here is aligned with the two general headlights and taillights. The space required for the configuration is not necessary, and the space for one lamp is sufficient.

As shown in FIG. 1, the lighting device 10 is an LED board 20 having a lamp body 11 having a heat dissipation plate, an LED 21 mounted with a plurality of light emitting elements, and an optical member configured as a unit for receiving light from each LED 21的镜阵30。 The lens array 30. The lighting device 10 is mainly assembled through these three components, and each component is unitized in advance.

The lamp body 11 is integrally formed by, for example, a metal such as aluminum alloy, and the front side is provided with a cylindrical storage portion 12 for mounting the lens array 30 while accommodating the LED substrate 20. The accommodating portion 12 is formed as an opening in the front, and the outer peripheral edge 12a protrudes into a flange shape. The bottom of the storage portion 12 constitutes a flat mounting surface, and although not shown in the figure, it is appropriate to provide a through-hole for wiring supplied from the power supply mounted on the vehicle. In addition, on the back side of the lamp body 11, a heat dissipation plate 14 in which a plurality of heat dissipation fins 13 extending parallel to each other is standing upright is provided at the rear.

The LED substrate 20 is a circular shape matching the size of the mounting surface of the bottom of the storage portion 12, and a wiring circuit is formed on the surface, and a plurality of LEDs 21 are mounted on the wiring circuit. Here, LED21 series example If it is a surface-mounted LED chip, the detailed description is omitted for general reasons, but the light axis orthogonal to the surface of the chip is taken as the center, and the light is emitted in a radiation range of a specific angle. The luminous color of the LED 21 can be arbitrarily selected, but in this embodiment, the white LED 21A that emits white light is used as the light of one color, and the red LED 21B that uses exothermic red light is used as the light of other colors.

Here, the white LED 21A and the red LED 21B are the same structure each having only a different emission color. Hereinafter, the case where the white LED 21A and the red LED 21B are collectively referred to as LED 21 is described. The LEDs 21 are arranged on the surface of the LED substrate 20 with the optical axis oriented in the same direction orthogonal to the surface. That is, even if it is what kind of light emission color from the surface side of the LED board 20, it is set so that all the light which emits straight ahead will be emitted.

The white LED 21A corresponds to a function as a "headlight", and the white light from the white LED 21A directly exits forward through the lens array 30 described later. On the other hand, the red LED 21B corresponds to the function as a "tail light", and also through the lens array 30, the red light from the red LED 21B can be diffused discernably from the outside.

The specific layout of each LED 21 on the surface of the LED substrate 20 is a design item that can be appropriately selected, but in this embodiment, the functions of the white LED 21A and the red LED 21B are considered, and their respective numbers and arrangements are sought. That is, the white LEDs 21A are capable of projecting bright light to a wide range as far as possible. In FIG. 1, eight LEDs 20 are arranged at equal intervals in the circumferential direction along the outer periphery of the LED substrate 20. In addition, about the center of the LED substrate 20, two are arranged in an up-and-down arrangement, and a total of ten are mounted.

On the other hand, the red LED 21B is sufficient as long as it can be recognized from the outside. On the surface of the LED substrate 20, the remaining white portion is arranged at the position where the white LEDs 21A are arranged. In detail, in FIG. 1, four white LEDs 21A arranged in the center of the LED substrate 20 are arranged in a tandem, three are arranged on the top and bottom, and a total of six are mounted. As such, the number (light quantity) of the red LED 21B is sufficient even if it is smaller than the white LED 21A.

As shown in FIGS. 3 and 4, the lens array 30 is provided with a disk-shaped base body 31 having a size matching the mounting surface of the bottom of the storage portion 12. The base 31 includes the light emitting portion 32 corresponding to the white LED 21A and the marking portion 33 corresponding to the red LED 21B among the aforementioned LEDs 21. The lens array 30 is integrally formed with a transparent material such as acrylic or polycarbonate. The lens array 30 is mounted so as to cover the opening of the storage portion 12 in a state of facing in parallel in front of the LED substrate 20 mounted on the bottom of the storage portion 12.

The light projection portion 32 is formed by a lens body provided corresponding to each white LED 21A, and white light from the white LED 21A is incident and directed toward a portion where it is emitted forward. As shown in FIG. 4, the lens system of the light projecting portion 32 includes: a bottomed hole 322 that is recessed at the center of the exit surface 321 connected to the surface of the base 31, and the bottom surface of the hole 322 is formed as Specific lens shape.

The light projecting portion 32 bulges into a bowl shape around the hole portion 322 and is located further back than the back surface of the base 31, and a concave portion 323 in which white light from the opposing white LED 21A is incident is formed at the top end. Each light projecting portion 32 is in a state where the base 31 is parallel to the aforementioned LED substrate 20, and the optical axis of each white LED 21A on the LED substrate 20 is about the center of the concave portion 323 (the axis of the light projecting portion 32) The base 31 is arranged so as to cross vertically.

The bottom surface of the concave portion 323 also faces the bottom surface of the hole portion 322 to form a specific lens shape. In addition, the bowl-shaped outer peripheral surface 324 that swells into the light projecting portion 32 becomes a critical reflection surface that totally reflects the light incident from the recessed portion 323 toward the exit surface 321, and has a curved shape or an inclination angle that will cause it to The totally reflected light is set to exit from the exit surface in a desired direction or light distribution characteristics.

Next, the marking portion 33 corresponds to the red LED 21B, and the red light from the red LED 21B can be incident, and the light guide body diffused identifiably from the outside. As described in detail, the marking portion 33 is on the front and back surfaces of the base 31, and the remaining white portion other than the light-emitting portion 32 is completely equivalent. The remaining white portion is obtained by texture or printing, or coating of a light diffusion material, etc. Set to diffuse the incident red light. That is, on the back surface of the base 31, for example, the entire white portion except for the bulged outer peripheral surface 324 of each light projecting portion 32 is applied to diffuse light through texture or printing.

The processing for diffusing the light with the marking part 33 is not limited to the back side of the base 31, but is carried out on the front side except for each light emitting part 32 The remaining white portion of the shooting surface 321 may be sufficient. The exit surface of the marking portion 33 is basically on the surface side of the base 31 except for the white portion of the exit surface 321 of each light projecting portion 32. However, since the red light from the red LED 21B is also guided to the side of the light projecting portion 32 integrally connected to the marking portion 33, the light projecting portion 32 (part of it) can also be used as the marking portion 33.

The light projecting portion 32 and the marking portion 33 are arranged on the base 31 in a unitary arrangement according to the specific layout of the LEDs 21 corresponding to each. In other words, the light projecting portions 32 are arranged such that their axes are arranged at positions overlapping the optical axis of the white LED 21A. On the other hand, the marking portion 33 is provided on the base 31 over the entire white portion except the light projection portions 32, and is arranged to be diffused so as to receive light from any of the red LEDs 21B. In the present embodiment, the exit surfaces of the light projecting portion 32 and the marking portion 33 are formed on the surface side of the base 31 and are continuously formed on the same plane.

Next, the operation of the lighting device 10 according to this embodiment will be described.

In this lighting device 10, a white LED 21A that emits light as a headlight and a red LED 21B that emits light as a taillight are mounted on an LED substrate 20, and a lens array 30 that receives light emitted by these LEDs 21 also serves as a Unit. In particular, the lens array 30 is integrated with the light projection section 32 and the marking section 33 that realize different light distribution characteristics, and the number of components constituting the lens array 30 is small, and the entire device can also be miniaturized.

After this, for the limited space in the exterior of the vehicle The installation of the front wall under the bridge is also easy. In addition, the lighting device 10 does not need to obtain extra configuration space, and the degree of freedom in design also becomes larger, and the number of changers can be increased. Furthermore, the structure of the mounting portion of the vehicle exterior for installing the lighting device 10 or the wiring of the wiring can be simplified, and the vehicle manufacturing cost can be reduced. Although the lighting device 10 is not shown, the front wall of the frontmost vehicle is installed as a pair of left and right, and the rear wall of the last rear vehicle is also installed as a pair of left and right.

The lighting device 10 is powered by a power source mounted on the vehicle, and each LED 21 on the LED board 20 is turned on in response to an operation such as a switch of a driver's seat installed in the cab. In addition, through the control means, in addition to the lighting of each LED 21 or even the extinguishing of the lights, it is also configured to control the illuminance and so on. However, the heat dissipated during the lighting of the LED 21 is directly transmitted to the bottom surface of the storage portion 12 immediately contacted by the LED substrate 20, and efficiently from the heat sink 13 of the heat sink 14 located on the back side of the lamp body 11 Dissipate heat to the outside.

In the lighting device 10 of the frontmost vehicle, among the LEDs 21 on the LED substrate 20, the white LED 21A corresponding to the headlight is lit. The white light from the white LED 21A comes from the lens array 30 and enters the concave portion 323 located in the center of the bowl-shaped outer peripheral surface 324 of the light projection portion 32 of the lens body. The white light incident on the concave portion 323 is collected through the curved surface shape of the inner peripheral surface of the concave portion 323 to be emitted from the exit surface 321 as a specific direction or light distribution characteristic prescribed by the headlight.

The details are the white light incident on the recess 323, facing A part in the axial direction is made parallel by the lens shape of the bottom surface of the concave portion 323 and the corresponding bottom surface of the hole portion 322, and straightly exits from the bottom surface of the hole portion 322 to the front. In addition, the other part of the white light diffused from the axis is totally reflected by the bowl-shaped outer peripheral surface 324, and exits from the exit surface 321 to the front slightly downward.

Here, each light projecting section 32 may uniformly distribute the light distribution characteristics of the emitted light to all the same directions, but may set a part of the light distribution characteristics to be different. For example, in each light projection section 32, only four of the white LEDs 21A arranged in the vertical row in the center of the LED substrate 20 are used as low beams, and are directed downward and obliquely across the optical axis of the white LED 21A In addition, the shape of the lens that emits light, and the other light projecting portions 32 arranged on both sides of the LED substrate 20 are used for high beam, and may be a lens shape that emits light toward the front slightly parallel to the optical axis of the white LED 21A.

On the other hand, in the lighting device 10 of the last tail vehicle, among the LEDs 21 on the LED board 20, the red LED 21B corresponding to the tail light is turned on. The red light from the red LED 21B is incident on the lens array 30 as the marking part 33 of the light guide, that is, on the back of the base 31, the white part other than the light projecting part 32 described above. The red light incident on the marking portion 33 is reflected in various directions through the processing of diffusing the light according to texture or printing, etc., and is emitted as light that can be discernably diffused from the outside on the surface of the base 31, and the marking portion 33 The whole glows red.

As such, for a lens array 30, the system also has Only the light projection portion 32 of the lens for the conventional headlight, and the remaining white portion on the active base 31 is the marking portion 33 of the light guide body for the taillight. The lighting device 10 functions as both a headlight and a taillight. Here, the direction in which the light projection unit 32 and the marking unit 33 each emit light is not simply different. That is, the light projecting portion 32 emits the light incident from the white LED 21A toward the front, and the marking portion 33 diffuses the light incident from the red LED 21B visibly from the outside.

In particular, in railway vehicles, there is a case where the foremost vehicle and the last vehicle are switched depending on when the terminal or destination is reached. At this time, when the front-most vehicle becomes the last-rear vehicle, the red LED 21B is turned on instead of the white LED 21A. Next time, the lighting device 10 functions as a tail lamp. Conversely, in the case where the rearmost vehicle becomes the frontmost vehicle, the white LED21A is turned on instead of the red LED21B, and next time, the lighting device 10 functions as a headlight.

As described above, the present lighting device 10 is not a simple combination of different types of lighting devices, but one lighting device 10 realizes various lamps in one unit. However, in spite of the foregoing, each LED21 not only simply switches on (turns on) or turns off (turns off), but as an example, the white LED 21A for the headlight increases the illuminance, etc., and is also adjusted in accordance with the adjustment of the illuminance. can.

In addition, as a feature of the configuration of the lighting device 10, in the lens array 30, the exit surfaces of the light projection portions 32 and the marking portions 33 are formed on the same plane on the surface side of the base 31. The configuration of the unit lens array 30 itself can also be simplified as to the relative arrangement with the LED substrate 20. In addition, a lens is used for the light projecting portion 32, and a light guide is used for the marking portion 33, so that the function including each light distribution characteristic can be easily realized, and the cost can be reduced. However, the lens array 30 also serves to cover the cover member of the housing portion 12, but it may be possible to cover the lens array 30 with another cover.

Furthermore, each LED 21 is not particularly limited to the place or arrangement of the installation, but as in this embodiment, because the LED axis 20 is arranged on one LED substrate 20 and the optical axis is oriented in the same direction, it can be used as Processor. In addition, regarding the LED substrate 20 itself, all the LEDs 21 are in the same direction, so that the LEDs 21 can be assembled and simply mounted, and can be easily manufactured.

Fig. 6 shows a second embodiment of the present invention.

In the present embodiment, the configuration of the lens array 30A is different from the lens array 30 of the first embodiment, and the light projecting section 32 is common, but the specific configuration of the marking section 33A is different. That is, the marking portion 33A is not on the back surface of the base 31 but on the surface side. At the white portion except for the exit surface 321 of the light projecting portion 32, a fine arc-shaped cross-section convex strip with a narrow arc shape is closely Arranged with irregularities attached.

According to the irregularities of the marking portion 33A, the red light emitted from the red LED 21B can be diffused to a wide range more efficiently. However, the same reference numerals are attached to the same kinds of parts as in the first embodiment, and redundant explanations are omitted.

7 and 8 show the third embodiment of the present invention.

In this embodiment, the structure of the LED substrate 20A is different from the LED substrate 20 of the first embodiment. In the LED substrate 20A, the white LEDs 21A are arranged along the outer periphery of the substrate, and three of them are arranged on both sides in a total of six. In addition, four red LEDs 21B are arranged in the middle of the white LED substrates 21A on both sides, at the center of the LED substrate 20A, and arranged in a column.

The layout of each LED 21 is such that the red LED 21B is omitted from the LED substrate 20 of the first embodiment, and the white LED 21A arranged in the center column is replaced with the red LED 21B. This is a result of considering the necessary brightness, irradiation distance, and range as headlights. In the white LEDs 21A, which are reduced in number compared to the first embodiment, these white light systems each pass through the corresponding light projection section 32. It can be used as a headlamp by projecting light.

In addition, the red LEDs 21B are arranged in a vertical row, but the red light from each red LED 21B passes through the corresponding light projection section 32 correspondingly, and is diffusibly diffused from the outside. In the light projecting portion 32 corresponding to each red LED 21B, it is necessary to diffuse the light instead of projecting light. The light diffusing agent is enclosed inside the lens body of the light projecting portion 32 and on the exit surface 321 In the same way as the aforementioned white part, the process of diffusing light through texture, printing, or unevenness, etc. may be used, and the whole light may turn red.

9 to 12 show the fourth embodiment of the present invention.

In this embodiment, not only the LED substrate 20B but also the lens array 30B has the same configuration as the LED substrate 20 or lens array of the first embodiment The 30 series is different. As shown in FIG. 9, the LED substrate 20B is configured by arranging a total of five white LEDs 21A, one at the center of the substrate, and four at equal intervals along the outer periphery of the substrate. In addition, the red LEDs 21B are arranged in the circumferential direction from the center of the white LEDs 21A arranged on the outer peripheral edge of the substrate in the circumferential direction and arranged in four at equal intervals.

The base 31 of the lens array 30B is provided at a position corresponding to the four white LEDs 21A, and a light projection 32 made of a lens body similar to the light projection 32 is provided. In addition, on the back surface of the base 31, a rib portion of the light guide body is integrally protruded as a marking portion 33A for the blank portion between the light projection portions 32. As shown in FIG. 10, the ribs of the marking portion 33A are formed in a lattice shape that is partially connected in an arc shape along the outer periphery of the substrate while intersecting in a lattice shape along the vertical and horizontal directions. The intersection in the rib becomes the position corresponding to the aforementioned four red LEDs 21B, and since then, the red light from the red LED 21B is incident. However, the rib portion of the marking portion 33A is housed inside the housing portion 12 of the lamp body 11.

As shown in FIG. 12, the red light incident on the marking portion 33A is partially brightly emitted from the surface side of the base 31 connected to the edge of the rib, and can also emit red as the entire surface of the base 31 By. Here, the blank portion except for the exit surface 321 of each light projecting portion 32 may be subjected to a process of diffusing light through texture or printing in the same manner as the aforementioned marking portion 33. According to the fourth embodiment described above, white light can be projected from the entire surface of the lens array 30B, and red light can also be made to emit light uniformly. However, for the Parts of the same kind are attached with the same symbols, and redundant explanations are omitted.

Fig. 13 shows a fifth embodiment of the present invention.

In this embodiment, the configuration of the lens array 30C is different from that of the lens array 30 of the first embodiment. The light projection section 32 and the marking section 33 (see FIG. 3) are common, but they are additionally provided along the base 31 The flange 33B protrudes from the outer periphery into a flange shape. However, the same reference numerals are attached to the same kinds of parts as in the first embodiment, and redundant explanations are omitted.

Such a flange-shaped marking portion 33B also protrudes outside the storage portion 12 of the lamp body 11, and the red light from the red LED 21B is guided by the marking portion 33 to emit red as a whole. As a result, it becomes a lighter who can easily recognize the marking portion 33B from the vehicle side. However, the lens array 30C of the fifth embodiment is provided with the marking portion 33B in the lens array 30 of the first embodiment, but for other lens arrays 30, 30A, 30B of the second, third, and fourth embodiments, It may be configured by adding a marker 33B.

The embodiments of the present invention have been described above with reference to the drawings, but the specific configuration is not limited to the aforementioned embodiments, and even if there are changes or additions that do not deviate from the scope of the present invention, they are also included in the present invention. For example, in the foregoing embodiment, as an example of a vehicle to which the present invention is applied, a railroad vehicle has been described, but it is not limited to a railroad vehicle, but includes other types of vehicles, such as cars walking on the road. Applicable. In addition, it is considered to be applicable to passengers such as ships and aircrafts other than vehicles.

In addition, in the foregoing embodiment, the lighting device 10 is It is composed of both headlights and taillights, but the purpose of the lighting device is not limited to headlights and taillights, and others, for example, are suitable for brake lights, auxiliary lights (fog lights), and vehicle width lights (parking lights) ), direction indicator (direction light) and so on. In addition, the headlights may be configured as a far lamp that can be switched to a long-distance light distribution characteristic, or a near-lamp with a short-distance light distribution characteristic.

In addition, the LED21 of the light-emitting element adopts white LED21A and red LED21B each emitting a single color, but LEDs of other light-emitting colors may be used. Furthermore, it is also possible to use a multi-color LED that can emit light with two or more colors using one element, and to make it emit light of different colors from each other. Of course, the LED21 is not limited to the surface-mount type LED chip, but can also be an LED lamp that embeds the chip in a shell-type model, and can also be used as a light source and other lamps.

In addition, all the LEDs 21 are arranged on one LED substrate 20 on the same plane and in exactly the same direction. However, the LED substrate 20 is not necessarily formed as an integrally formed product, but may be combined and divided into plural configurations. In addition, the light projecting portion 32 and the marking portion 33 of the lens array 30 are also integrally arranged in a specific layout on the base 31, but others, for example, may be combined to form another individual structure as a unit.

Furthermore, the specific layout of each LED 21 on the LED substrate 20 is not limited to the configuration shown in the foregoing embodiments, but is a design item that can be appropriately selected. In addition, according to the arrangement of the LEDs 21, the specifics of the light projection section 32 or the marking section 33 on the base 31 of the lens array 30 The layout is not limited to the structure shown in each of the foregoing embodiments, but can be modified as appropriate.

[Industry use possibility]

The lighting device of the present invention is not limited to a lighting device that functions as a headlight or a taillight, but can be widely applied to a lighting device that realizes two different light emitting forms.

10‧‧‧Lighting

11‧‧‧Lamp body

12‧‧‧Storage Department

12a‧‧‧Outer periphery

13‧‧‧heat sink

14‧‧‧heat sink

20‧‧‧LED substrate

21A‧‧‧White LED

21B‧‧‧Red LED

30‧‧‧lens array

31‧‧‧Matrix

32‧‧‧Projection Department

33‧‧‧ Marking Department

322‧‧‧hole

Claims (4)

A lighting device for a vehicle, which is mounted on the body of a vehicle and has a plurality of light-emitting elements that emit light in different colors, is characterized by having: the light emitted by each of the plurality of light-emitting elements is taken as an act An optical component composed of one unit; the aforementioned optical component is comprised of: a light emitting element that emits light of a certain color among a plurality of light emitting elements corresponding to the aforementioned plurality of light emitting elements, and emits the light of the same color toward the front to exit The light projection unit and the light-emitting element corresponding to the light emitting other colors can be integrated from the outside to distinguish the identification unit of the light of the other color into the integration; the light projection unit and the mark unit are used to match each According to the specific layout of the light-emitting elements, the base body is arranged in an integrated arrangement. The light-emitting part has an exit surface side connected to the surface of the base body at the center, and is opened to recess the bottomed hole. , The bottom of the hole is a lens body formed into a specific shape, surrounding the hole, further back toward the back of the base, becomes the top of the bowl-shaped swelled portion, forming the aforementioned one-color opposite to the self-illumination The concave portion of the light of the light emitting element of the light, the bottom surface of the concave portion faces the bottom of the hole portion, becomes a specific lens shape, and expands to form the outer peripheral surface of the bowl-shaped portion, which becomes incident from the concave portion Light, critical reflection towards the total reflection of the exit surface On the surface, the marking portion is provided on the front and back surfaces of the base body, and is provided on the entire area of the white portion other than the light projecting portion. A vehicle lighting device as described in item 1 of the patent application, wherein the light-emitting elements are each on a substrate, and the optical axis is arranged so that the optical axis faces the same direction; the optical member is the substrate and the substrate The former, those who are placed in parallel. As in the vehicle lighting device described in item 2 of the patent application scope, each of the exit surfaces of the light projecting portion and the marking portion is formed at least on the same plane on the surface side of the base body. As in the vehicle lighting device described in the first, second, or third patent application, the light-emitting portion is made of a lens, and the marking portion is made of a light guide.

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