JP6470020B2 - Lighting device - Google Patents

Description

  The present invention relates to an illuminating device that is attached to a vehicle body and includes a plurality of light emitting elements that emit light of different colors, and more particularly to an illuminating device that also serves as a headlight and a taillight of a railway vehicle.

  2. Description of the Related Art Conventionally, for example, headlamps and taillights mounted on railway vehicles are known as lighting devices for this type of vehicle. Here, the headlamp is called a front beacon lamp in the relevant laws and regulations related to railways, and it improves the visibility of the driver by illuminating the front of the vehicle in the night direction and lights up from the front of the vehicle at night. It can be confirmed. In addition, the taillight is called a rear marker lamp in the related laws and regulations relating to railways, and indicates that it is behind the vehicle by a light or a reflection, and informs other vehicles and the like that run behind the vehicle. Thus, the headlight and the taillight have completely different functions.

  Headlights and taillights have different main light distribution characteristics and light colors due to the differences in functions described above. That is, in the headlamp, a long distance light distribution characteristic for illuminating the front far is required, and the light color is generally determined to be white. Further, in the taillight, the light distribution characteristic at a short distance that can be visually recognized from the outside is sufficient, and the light color is determined to be red. Therefore, the headlight and the taillight are each constituted by separate lamps (see, for example, Patent Documents 1 and 2).

  By the way, in a rail vehicle, in order to change the advancing direction after arriving at a terminal station, a head vehicle and a tail vehicle may be switched. In order to respond to such a situation, both the headlight 1 and the taillight 2 are attached to the front (rear) end of the leading (last) vehicle, as shown in FIG. Accordingly, either the headlight 1 or the taillight 2 may be selectively lit at the front and rear portions of the vehicle.

JP 2013-141953 A JP 2013-010467 A

  However, when the headlight and the taillight are completely different configurations as in the prior art disclosed in Patent Documents 1 and 2, the space for arranging the headlight and the taillight is limited in the limited exterior space of the vehicle. It is necessary to secure them separately. For this reason, there are problems that it is difficult to examine the space for mounting the vehicle body and that there are design restrictions. In addition, since separate lamps are prepared, the number of parts and the number of mounting steps are increased, leading to a problem of increased costs.

  By the way, when the head vehicle and the tail vehicle are switched, it may be convenient to have both the headlight and taillight functions. However, as shown in FIG. 14 (b), the idea of simply combining the headlight 1 and the taillight 2 close to each other eventually requires that separate lamp arrangement spaces be prepared. In addition, the number of parts is not reduced. Therefore, there has been a demand for how to realize the functions of the headlight and the taillight as a single device with a simple configuration.

  The present invention has been made paying attention to the problems of the prior art as described above, and different lamps including a headlight and a taillight can be configured as one simple device. An object of the present invention is to provide an illuminating device that can be easily installed even in a limited space, has a high degree of design freedom, and can greatly reduce costs.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] In an illumination device (10) that is attached to a vehicle body and includes a plurality of light emitting elements (21) that emit light in different colors.
An optical component (30) configured as a unit for receiving light emitted by each of the plurality of light emitting elements (21);
The optical component (30) corresponds to the light emitting element (21A) that emits light of one color among the base (31) and the light emitting elements (21). Corresponding to the light projecting part (32) emitting forward and the light emitting element (21B) emitting light of other colors, the indicator part (33) for diffusing the incident light of other colors so as to be visible from the outside and, with a,
The light projecting part (32) and the labeling part (33) are provided so as to be integrally arranged on the base (31) in a predetermined layout according to the corresponding light emitting elements (21), respectively.
The light projecting portion (32) has a bottomed hole portion (322) that is open and recessed toward the emission surface (321) side that is continuous with the surface of the base body (31) at the center. The lens body has a bottom surface formed in a predetermined lens shape, and is opposed to the top end of a portion that bulges further backward from the back surface of the base body (31) so as to surround the hole (322). A recess (323) for receiving light from the light emitting element (21A) that emits light of one color is formed, and the bottom surface of the recess (323) faces the bottom surface of the hole (322). The outer peripheral surface (324) of the portion that has a predetermined lens shape and bulges in a bowl shape is a critical reflection surface that totally reflects the light incident from the concave portion (323) toward the exit surface (321). And
The marker part (33) is provided on the entire surface of the blank part other than the light projecting part (32) on the front and back surfaces of the base body (31), and is processed to diffuse light in the blank part. The vehicle lighting device (10) is characterized in that it can receive and diffuse light from any of the light emitting elements (21B) that emit light of other colors .

[ 2 ] Each light emitting element (21) is arranged in a state where the optical axis faces in the same direction on one substrate,
The vehicular lighting device (10) according to [ 1 ], wherein the optical component (30) includes the base (31) arranged in parallel in front of the substrate.

[3] wherein each of the exit surface of the light projecting portion (32) and said indicator portion (33) comprises, characterized in that formed on the same plane surface side of at least the substrate (31) [2] Lighting device (10) for vehicles as described in 1.

[4] before Symbol indicator unit (33) is said to be characterized in that it consists of the light guide body [1], the lighting device for a vehicle according to [2] or [3] (10).

Next, the operation based on the above solution will be described.
The illumination device (10) according to [1] has a plurality of light emitting elements (21) that emit light of different colors, but the optical component (30) that receives the light emitted by each light emitting element (21) is a unit. This optical component (30) includes a light projecting section (32) and a label section (33) that realize different light distribution characteristics. Therefore, it is not a mere combination of different lighting devices, and a single lighting device (10) can be used for various lamps.

  In particular, the light projecting part (32) and the labeling part (33) are not merely different in the direction in which light is emitted. The light projecting unit (32) emits the light incident from the light emitting element (21A) that emits light of one color forward, while the marker unit (33) emits light of another color. Is diffused so as to be visible from the outside, and the functions including the light distribution characteristics are completely different, but can be realized by one unit.

Such an optical component (30 ) has a single base (31), and a light projecting section (32) and a labeling section (33) are provided on the base (31). Ru provided so as to be aligned in a predetermined layout tailored to 21). Here the light projecting portion (32) and the labeled part (33), by Rukoto provided side by side in advance integrally on the base body (31), it is possible to reduce the number of parts and assembly steps.
Moreover, the said light projection part (32) has a hole part (322) with a bottom which opens and is dented in the emission surface (321) side connected to the surface of the said base | substrate (31) in the center, and this hole part (322) ) Is a lens body formed in a predetermined lens shape, and the top end of the portion that bulges in a bowl shape further rearward from the back surface of the base body (31) so as to surround the hole (322), A concave portion (323) into which light from the light emitting element (21A) that emits the light of a certain color is incident is formed, and the bottom surface of the concave portion (323) is opposed to the bottom surface of the hole portion (322). Thus, the outer peripheral surface (324) of the portion bulged in a bowl shape is a critical reflecting surface that totally reflects the light incident from the recess (323) toward the exit surface (321). It has become.
Furthermore, the marker part (33) is provided on the entire surface of the blank part other than the light projecting part (32) on the front and back surfaces of the base body (31), and a process for diffusing light in the blank part is performed. Therefore, the light from any of the light emitting elements (21B) that emit light of each other color can be received and diffused.

Further, the mounting parts and arrangement of the plurality of light emitting elements (21) are not particularly limited, but as described in [ 2 ] above, for example, the optical axes are respectively in the same direction on one substrate. If it is arranged so as to face, it can be handled as a single light source substrate. Also, regarding the substrate itself, since all the light emitting elements (21) are in the same direction, they can be easily mounted together and can be easily created. The optical component (30) may be disposed in parallel with the base (31) in front of the substrate on which the light emitting elements (21) are arranged.

Furthermore, as described in [ 3 ] above, if the light emitting surfaces of the light projecting portion (32) and the labeling portion (33) are formed on at least the same plane on the surface side of the base body (31), The configuration of the optical component (30) itself that is a unit can also be simplified with respect to the relative arrangement with the light source substrate.

Regarding the configuration of the light projecting unit (32) and the labeling unit (33), specifically, as described in [ 4 ], for example, a lens is used for the light projecting unit (32), and If a light guide is employed for the marking part (33), it is possible to easily realize functions including the respective light distribution characteristics, and the cost can be further reduced.

  According to the illuminating device according to the present invention, different lamps including a headlight and a taillight can be configured as one simple device, and can be easily attached even in a limited space, and in terms of design. The degree of freedom can be increased, and the cost can be greatly reduced.

It is a disassembled perspective view which shows the illuminating device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the illuminating device which concerns on 1st Embodiment of this invention. It is the perspective view which looked at the lens array of the illuminating device which concerns on 1st Embodiment of this invention from the back side. It is the perspective view which looked at the lens array of the illuminating device which concerns on 1st Embodiment of this invention from the front side. It is a perspective view which shows the light emission state of the illuminating device which concerns on 1st Embodiment of this invention. It is the perspective view which looked at the lens array of the illuminating device which concerns on 2nd Embodiment of this invention from the front side. It is a disassembled perspective view which shows the lamp body and LED board of the illuminating device which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the light emission state of the illuminating device which concerns on 3rd Embodiment of this invention. It is a disassembled perspective view which shows the lamp body and LED board of the illuminating device which concerns on 4th Embodiment of this invention. It is the perspective view which looked at the lens array of the illuminating device which concerns on 4th Embodiment of this invention from the back side. It is the perspective view which looked at the lens array of the illuminating device which concerns on 4th Embodiment of this invention from the front side. It is a perspective view which shows the light emission state of the illuminating device which concerns on 4th Embodiment of this invention. It is the perspective view which looked at the lens array of the illuminating device which concerns on 5th Embodiment of this invention from the front side. It is explanatory drawing which shows arrangement | positioning of the headlamp and the tail lamp in the conventional railway vehicle.

Hereinafter, various embodiments representing the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention.
Illumination device 10 according to the present embodiment includes a plurality of light emitting elements that are attached to a vehicle body of a vehicle and emit light in different colors. Hereinafter, a description will be given of an example of a lamp that serves as a headlight and a taillight applied to a railway vehicle as a vehicle.

  Illumination device 10 is attached to, for example, the front (rear) vehicle body of a front (rearmost) vehicle having a driver's cab among railway vehicles (not shown). At the front vehicle, on both sides of the front wall below the driver's cab, there are provided mounting portions for installing the lighting devices 10, respectively. At the mounting portions, the lighting devices 10 are paired on the left and right with the front facing. It is attached as follows. The size of the mounting portion here does not require a space for arranging two lamps such as a general headlamp and a tail lamp, and a space for installing one lamp is sufficient.

  As shown in FIG. 1, the lighting device 10 includes a lamp body 11 that also serves as a heat sink, an LED substrate 20 on which LEDs 21 that are a plurality of light emitting elements are mounted, and an optical unit that is configured as a unit that receives light from each LED 21. It has a lens array 30 that is a component. The illumination device 10 is mainly assembled by these three parts, and each part is previously unitized.

  The lamp body 11 is integrally formed of a metal such as an aluminum alloy, for example, and a cylindrical storage portion 12 for storing the LED substrate 20 and attaching the lens array 30 is provided on the front side. . The storage part 12 is opened forward, and the outer peripheral edge 12a protrudes in a flange shape. The bottom of the storage portion 12 forms a flat mounting surface, and although not shown, an insertion hole or the like is provided at an appropriate position through which a wiring for supplying electric power from a power source mounted on the vehicle is passed. Further, on the back side of the lamp body 11, a heat sink 14 in which a plurality of radiating fins 13 extending in parallel to each other on the rear side is provided is provided.

  The LED substrate 20 has a circular shape with a size matching the mounting surface on the bottom of the housing portion 12, a wiring circuit is formed on the surface, and a plurality of LEDs 21 are mounted on the wiring circuit. Here, the LED 21 is, for example, a surface-mount type LED chip, and since its configuration is general, a detailed description thereof will be omitted, but light is emitted in a radiation range of a predetermined angle around an optical axis orthogonal to the chip surface. Type. Although the emission color of the LED 21 can be arbitrarily selected, in the present embodiment, a white LED 21A that emits white light as one color light and a red LED 21B that emits red light as another color light are used.

  Here, the white LED 21 </ b> A and the red LED 21 </ b> B have the same configuration, each different only in emission color, and hereinafter, the white LED 21 </ b> A and the red LED 21 </ b> B are collectively referred to as LED 21. Each of these LEDs 21 is arranged on the surface of the LED substrate 20 with the optical axis facing in the same direction orthogonal to the surface. That is, light is emitted straight from the front side of the LED substrate 20 regardless of the emission color.

  The white LED 21A corresponds to a function as a “headlight”, and white light from the white LED 21A is emitted forward as it is by a lens array 30 described later. On the other hand, the red LED 21B corresponds to the function as a “tail light”, and the red light from the red LED 21B is diffused by the lens array 30 so as to be visible from the outside.

  The specific layout of each LED 21 on the surface of the LED substrate 20 is a design matter that can be selected as appropriate. In the present embodiment, the number and arrangement of each LED 21 are devised in consideration of the functions of the white LED 21A and the red LED 21B. Has been. That is, eight white LEDs 21A are arranged along the outer periphery of the LED substrate 20 at equal intervals in the circumferential direction in FIG. 1 so that bright light can be projected as far as possible over a wide range. Two LED boards 20 are also arranged at the approximate center of the LED board 20 so as to be lined up and down, and a total of ten are mounted.

  On the other hand, since the red LEDs 21B need only be visible from the outside, the red LEDs 21B are arranged on the blank portion of the arrangement positions of the white LEDs 21A on the surface of the LED substrate 20. Specifically, in FIG. 1, three white LEDs 21 </ b> A arranged vertically in the center of the LED substrate 20 are respectively arranged on the top and bottom, and a total of six are mounted. Thus, the number (light quantity) of the red LEDs 21B may be smaller than that of the white LEDs 21A.

  As shown in FIGS. 3 and 4, the lens array 30 includes a single disk-shaped base 31 having a size matching the mounting surface on the bottom of the storage portion 12. On the base 31, a light projecting portion 32 corresponding to the white LED 21A among the LEDs 21 and a labeling portion 33 corresponding to the red LED 21B are included. Such a lens array 30 is integrally formed of a transparent material such as acrylic or polycarbonate. The lens array 30 is attached in a state of covering the opening of the storage unit 12 in a state of facing the front of the LED substrate 20 mounted on the bottom of the storage unit 12 in parallel.

  The light projecting unit 32 is formed of a lens body provided corresponding to each white LED 21A, and is a portion where white light from the white LED 21A is incident and emitted forward. As shown in FIG. 4, the lens body that is the light projecting portion 32 includes a bottomed hole portion 322 that opens to the side of the emission surface 321 that is continuous with the surface of the base 31 and is recessed, and the bottom surface of the hole portion 322 is It is formed in a predetermined lens shape.

  The light projecting unit 32 bulges further in a bowl shape from the back surface of the base 31 so as to surround the hole 322, and a concave portion 323 into which white light from the facing white LED 21A is incident is formed at the top end. Yes. Each light projecting unit 32 has the base 31 facing the LED substrate 20 in parallel, and the optical axis of each white LED 21A on the LED substrate 20 is at the center of the recess 323 (the axis of the light projecting unit 32). It arrange | positions on the base | substrate 31 so that it may cross | intersect perpendicularly | vertically.

  The bottom surface of the recess 323 also faces the bottom surface of the hole 322 and forms a predetermined lens shape. In addition, the outer peripheral surface 324 bulged in a bowl shape of the light projecting unit 32 is a critical reflection surface that totally reflects the light incident from the concave portion 323 toward the output surface 321, and depending on the curved shape and the inclination angle, The totally reflected light is set to be emitted from the emission surface in a desired direction and light distribution characteristics.

  Next, the label | marker part 33 is a light guide which diffuses so that the red light from this red LED 21B injects corresponding to red LED 21B, and can be visually recognized from the outside. More specifically, the marking portion 33 corresponds to all the blank portions other than the light projecting portion 32 on the front and back surfaces of the base 31 and is incident on the blank portion by embossing or printing, application of a light diffusing material, or the like. It is provided to diffuse the red light. That is, on the back surface of the base 31, for example, a process of diffusing light by embossing, printing, or the like is performed on the entire area of the blank portion excluding the bulging outer peripheral surface 324 of each light projecting unit 32.

  The process of diffusing light by the labeling portion 33 is not limited to the back surface side of the base 31, and may be performed on a blank portion excluding the emission surface 321 of each light projecting portion 32 on the front surface side. The exit surface of the marking portion 33 is basically a blank portion on the surface side of the base 31 excluding the exit surface 321 of each light projecting portion 32. However, since the red light from the red LED 21 </ b> B is also guided to the light projecting unit 32 side that is continuous with the marker unit 33, the light projecting unit 32 (a part thereof) may also be used as the marker unit 33. .

  The light projecting unit 32 and the labeling unit 33 are provided so as to be integrally arranged on the base 31 in a predetermined layout according to the corresponding LED 21. That is, each light projecting unit 32 is arranged so that the respective axis centers thereof are aligned with the optical axis of the white LED 21A. On the other hand, the label part 33 is provided on the whole area of the blank part excluding each light projecting part 32 on the base 31, and is arranged so that light from any of the red LEDs 21B can be received and diffused. In the present embodiment, the light emission surfaces of the light projecting portion 32 and the marker portion 33 are formed so as to be continuous on the same plane on the surface side of the base 31.

Next, the effect | action of the illuminating device 10 which concerns on this Embodiment is demonstrated.
In the present illumination device 10, a white LED 21 </ b> A that emits light as a headlight and a red LED 21 </ b> B that emits light as a taillight are mounted on a single LED substrate 20, and the lens array 30 that receives light emitted by these LEDs 21 is also a unit. It is configured. In particular, in the lens array 30, the light projecting unit 32 and the labeling unit 33 that realize different light distribution characteristics are integrated, the number of components constituting the lens array 30 is small, and the entire apparatus can be downsized.

  This also facilitates installation work on the front wall below the cab, which is a limited space in the exterior of the vehicle. In addition, the lighting device 10 can increase design freedom and increase variations without taking extra space. Furthermore, the structure of the mounting portion of the vehicle exterior for installing the lighting device 10 and the wiring routing can be simplified, and the manufacturing cost of the vehicle can be reduced. Although not shown, the lighting devices 10 are attached as a pair of left and right from the front wall of the leading vehicle, and are similarly attached as a pair of left and right to the rear wall of the last vehicle.

  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 of a switch or the like provided in a driver seat in the driver's cab. Moreover, you may comprise so that illumination intensity etc. can be controlled by the control means other than lighting or blinking for each LED 21. The heat generated when the LED 21 is turned on is transmitted as it is to the bottom surface of the housing portion 12 with which the LED substrate 20 is in direct contact, and is efficiently radiated to the outside from the heat radiation fins 13 of the heat sink 14 on the back side of the lamp body 11. The

  In the lighting device 10 in the leading vehicle, among the LEDs 21 on the LED substrate 20, the white LED 21A corresponding to the headlamp is turned on. White light from the white LED 21 </ b> A enters the concave portion 323 at the center of the outer peripheral surface 324 that bulges in a bowl shape of the light projecting unit 32 that is a lens body in the lens array 30. The white light incident on the concave portion 323 is collected by the rounded shape of the inner peripheral surface of the concave portion 323, and is emitted from the emission surface 321 with a predetermined direction and light distribution characteristics determined as a headlamp.

  Specifically, a part of the white light incident on the concave portion 323 in the axial direction is collimated by the lens shape of the bottom surface of the concave portion 323 and the bottom surface of the opposite hole portion 322, and forward from the bottom surface of the hole portion 322. It emits straight. Further, the other part of the white light spreading from the axis is totally reflected by the bowl-shaped outer peripheral surface 324 and emitted slightly downward from the emission surface 321 forward.

  Here, each of the light projecting units 32 may be unified with a light distribution characteristic that emits light in the same direction, but a part thereof may be set to a different light distribution characteristic. For example, in each of the light projecting units 32, only four corresponding to the white LEDs 21A arranged in a column at the center of the LED substrate 20 are used for the low beam, and light is directed downwardly obliquely intersecting the optical axis of the white LED 21A. The other light projecting portions 32 arranged on both sides of the LED substrate 20 may be used for a high beam, and may have a lens shape that emits light toward the front substantially parallel to the optical axis of the white LED 21A.

  On the other hand, in the lighting device 10 in the last vehicle, among the LEDs 21 on the LED board 20, the red LED 21B corresponding to the taillight is turned on. The red light from the red LED 21 </ b> B is incident on a blank portion other than the light projecting portion 32 on the label portion 33 that is a light guide in the lens array 30, that is, on the back surface of the base 31. The red light incident on the marking portion 33 is reflected in various directions by processing for diffusing light such as embossing or printing, and is emitted as light diffused so as to be visible from the outside on the surface of the base 31. The whole 33 emits red light.

  Thus, in one lens array 30, not only a light projecting unit 32 that is a normal headlamp lens, but also a sign unit that is a light guide for a taillight using a blank portion on the base 31. 33 is also provided and this illuminating device 10 exhibits the function of both a headlamp and a tail lamp. Here, the light projecting unit 32 and the labeling unit 33 are not only different in the direction in which the light is emitted. That is, the light projecting unit 32 emits the light incident from the white LED 21A forward, while the labeling unit 33 diffuses the light incident from the red LED 21B so as to be visible from the outside.

  In particular, in the case of a railway vehicle, there are cases where the leading vehicle and the last vehicle are switched when arriving at the terminal station or depending on the destination. At this time, when the leading vehicle becomes the last vehicle, the lighting device 10 functions as a taillight by turning on the red LED 21B instead of the white LED 21A. On the contrary, when the last vehicle becomes the leading vehicle, the lighting device 10 functions as a headlamp by turning on the white LED 21A instead of the red LED 21B.

  As described above, the present lighting device 10 is not a mere combination of different types of lighting devices, and a single lighting device 10 can realize various lamps in one unit. As described above, each LED 21 is not simply switched on (on) or turned off (off), but for example, the white LED 21A of the headlamp is adjusted to increase the illuminance and adjust the illuminance. Also good.

  Further, as a structural feature of the illumination device 10, in the lens array 30, the emission surfaces of the light projecting unit 32 and the marker unit 33 are formed on the same plane on the surface side of the base 31, so that one unit. The configuration of a certain lens array 30 itself can also be simplified with respect to the relative arrangement with the LED substrate 20. In addition, since a lens is used for the light projecting unit 32 and a light guide is used for the labeling unit 33, functions including the respective light distribution characteristics can be easily realized, and the cost can be reduced. . The lens array 30 also serves as a cover member that covers the storage unit 12, but the lens array 30 may be separately covered with a cover.

  Furthermore, each LED 21 is not particularly limited in the location and arrangement for mounting, but as in the present embodiment, each LED 21 is arranged in a state in which the optical axis faces in the same direction on one LED substrate 20. , Can be handled as one part. Also, with respect to the LED substrate 20 itself, since all the LEDs 21 are in the same direction, the LEDs 21 can be easily mounted together 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 unit 32 is common, but the specific configuration of the marking unit 33A is different. That is, in the mark portion 33A, on the front surface side, not the back surface of the base 31, the ridges of the prism specification having a fine arc-shaped cross section are densely arranged in the blank portion excluding the emission surface 321 of the light projecting portion 32. The shape is uneven.

  According to the unevenness of the marking portion 33A, the red light emitted from the red LED 21B can be diffused more efficiently and widely. In addition, the same code | symbol is attached | subjected to the site | part same as 1st Embodiment, and the overlapping description is abbreviate | omitted.

7 and 8 show a third embodiment of the present invention.
In the present embodiment, the configuration of the LED substrate 20A is different from that of the LED substrate 20 of the first embodiment. In the LED substrate 20A, a total of six white LEDs 21A are arranged such that three white LEDs 21A are arranged on both sides along the outer periphery of the substrate. Further, a total of four red LEDs 21B are arranged so as to be arranged in a column at the center of the LED substrate 20A so as to be positioned between the white LEDs 21A on both sides.

  Such a layout of each LED 21 is obtained by omitting the red LED 21B from the LED substrate 20 of the first embodiment and replacing the white LED 21A arranged in the center column with the red LED 21B. This is due to the result of considering the brightness and the irradiation distance or range necessary for the headlamp, and even in the white LED 21A whose number is reduced from that of the first embodiment, these white lights are respectively corresponding to the corresponding light projections. The light is projected through the unit 32, and a function as a headlamp can be realized.

  In addition, the red LEDs 21B are arranged in a vertical row, but the red light from each red LED 21B is diffused so as to be visible from the outside through the corresponding light projecting unit 32. In the light projecting section 32 corresponding to each red LED 21B, it is necessary to diffuse instead of projecting light. Therefore, a light diffusing agent is sealed inside the lens body of the light projecting section 32, Similar to the above-described blank portion, it is preferable that light is diffused by embossing, printing, unevenness, or the like to emit light in red as a whole.

9 to 12 show a fourth embodiment of the present invention.
In the present embodiment, not only the LED substrate 20B but also the configuration of the lens array 30B is different from the LED substrate 20 and the lens array 30 of the first embodiment. As shown in FIG. 9, a total of five LED substrates 20B are arranged such that one white LED 21A is arranged at the center of the substrate and four are arranged at regular intervals along the outer periphery of the substrate. Further, four red LEDs 21B are arranged at equal intervals in the circumferential direction closer to the center of the substrate than the white LEDs 21A arranged on the outer periphery of the substrate.

  On the base 31 of the lens array 30B, a light projecting unit 32 made of a lens body is provided at a position corresponding to the four white LEDs 21A. In addition, on the back surface of the base 31, ribs serving as light guides are integrally provided as projecting portions 33 </ b> A in the blank portions between the light projecting portions 32. As shown in FIG. 10, the ribs that are the mark portions 33 </ b> A extend in the vertical and horizontal directions and intersect with each other in a lattice shape, and are formed as a frame that is partially arc-shaped along the outer periphery of the substrate. The intersecting portion in the rib is a position corresponding to the four red LEDs 21B, and the red light from the red LED 21B enters from the intersecting portion. In addition, the rib which is the mark part 33 </ b> A fits inside the storage part 12 of the lamp body 11.

  As shown in FIG. 12, the red light incident on the marking portion 33 </ b> A emits light brighter locally than the surface side of the base 31 where the edges of the ribs are continuous, and also causes the entire surface of the base 31 to emit red light. it can. Here, the blank portion except the emission surface 321 of each light projecting unit 32 may be subjected to processing for diffusing light by embossing, printing, or the like, similar to the labeling unit 33 described above. According to the fourth embodiment, white light can be projected from the entire surface of the lens array 30B, and red light can also be emitted substantially uniformly. In addition, the same code | symbol is attached | subjected to the site | part same as 1st Embodiment, and the overlapping description is abbreviate | omitted.

FIG. 13 shows a fifth embodiment of the present invention.
In the present embodiment, the configuration of the lens array 30C is different from the lens array 30 of the first embodiment, and the light projecting unit 32 and the labeling unit 33 (see FIG. 3) are common. Is provided with a mark portion 33B projecting in a flange shape. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

  Such a flange-shaped marker portion 33B also protrudes outside the housing portion 12 of the lamp body 11, and the red light from the red LED 21B is guided through the marker portion 33, so that it becomes entirely red. Emits light. As a result, it is possible to easily visually recognize the light emission of the sign portion 33B from the side of the vehicle. The lens array 30C according to the fifth embodiment is obtained by adding a labeling portion 33B to the lens array 30 according to the first embodiment. In addition, the lenses according to the second, third, and fourth embodiments. The arrays 30, 30A, and 30B may be configured by adding a label portion 33B.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and there are changes and additions within the scope not departing from the gist of the present invention. Are also included in the present invention. For example, in the above-described embodiment, a railway vehicle has been described as an example of a vehicle to which the present invention is applied. However, the present invention is not limited to the railway vehicle, and various other types of vehicles including automobiles traveling on roads and the like. It can also be applied to. In addition to vehicles, it can also be applied to vehicles such as ships and aircraft.

  Moreover, in the said embodiment, although the illuminating device 10 was comprised so that it might serve as both a headlamp and a taillight, the use of a luminaire is not limited to a headlamp and a taillight. You may apply to a light, an auxiliary light (fog lamp), a vehicle width light (small lamp), a direction indicator (blinker), etc. The headlamp may be configured to be able to be switched between a high beam having a long-distance light distribution characteristic and a low beam having a short-distance light distribution characteristic.

  Moreover, although LED21 which is a light emitting element employ | adopted white LED21A and red LED21B which each light-emit in single color, you may use LED of another luminescent color. Further, a multi-color LED capable of emitting two or more colors with one element may be used to emit light in different colors. Of course, the LED 21 is not limited to a surface-mount type LED chip, but may be an LED lamp in which the chip is embedded in a bullet-type mold, and another lamp or the like may be used as a light source.

  Further, all the LEDs 21 are all arranged in the same direction on the same plane on the single LED board 20, but the LED board 20 is not necessarily formed as an integrally molded product, and is divided into a plurality of parts. May be combined. Further, the light projecting unit 32 and the labeling unit 33 in the lens array 30 are also integrally arranged on the base 31 in a predetermined layout. However, for example, another unit formed separately may be combined into one unit. .

  Furthermore, the specific layout of each LED 21 on the LED substrate 20 is not limited to that shown in each of the above embodiments, and is a design item that can be selected as appropriate. Further, according to the arrangement of the LEDs 21, the specific layout of the light projecting unit 32 and the label unit 33 on the base 31 of the lens array 30 is not limited to that shown in each of the embodiments, and is appropriately Can be changed.

  The illuminating device according to the present invention is not limited to the illuminating device functioning as a headlight or a taillight, and can be widely applied to illuminating devices that realize two different light emission modes.

DESCRIPTION OF SYMBOLS 10 ... Illuminating device 11 ... Lamp body 12 ... Storage part 12a ... Outer periphery 13 ... Radiation fin 14 ... Heat sink 20 ... LED board 20A ... LED board 20B ... LED board 21 ... LED
21A ... White LED
21B ... Red LED
DESCRIPTION OF SYMBOLS 30 ... Lens array 30A ... Lens array 30B ... Lens array 30C ... Lens array 31 ... Base | substrate 32 ... Projection part 33 ... Marking part 33A ... Marking part 33B ... Marking part 321 ... Outgoing surface 322 ... Hole part 323 ... Concave part 324 ... Outer periphery surface

Claims (4)

In an illuminating device attached to a vehicle body and having a plurality of light emitting elements that emit light of different colors,
An optical component configured as a unit for receiving light emitted by each of the plurality of light emitting elements;
The optical component includes a base, a light projecting unit that emits the incident light of one color toward the front corresponding to a light emitting element that emits light of a certain color among the plurality of light emitting elements, and another Corresponding to a light emitting element that emits light of a color, a label portion that diffuses the incident light of the other color so as to be visible from the outside , and
The light projecting portion and the labeling portion are provided so as to be integrally arranged on the base body in a predetermined layout according to each of the corresponding light emitting elements,
The light projecting portion is a lens body having a bottomed hole portion that is open and recessed at the emission surface side continuous with the surface of the base at the center, and the bottom surface of the hole portion is formed in a predetermined lens shape. At the top end of the portion that bulges further back from the back surface of the base so as to surround the hole portion, a concave portion is formed in which light from the light emitting element that emits the light of the certain color that is opposed to is incident. And the bottom surface of the concave portion forms a predetermined lens shape facing the bottom surface of the hole portion, and the outer peripheral surface of the bulged portion faces the light incident from the concave portion toward the output surface. It is a critical reflection surface that totally reflects,
The indicator portion is provided on the front and back surfaces of the base body in the entire area of the blank portion other than the light projecting portion, and is processed to diffuse light in the blank portion, and emits light of each other color. An illumination device for a vehicle , wherein light from any of the elements can be received and diffused . Each of the light emitting elements is disposed in a state where the optical axis faces in the same direction on one substrate,
The lighting device for a vehicle according to claim 1 , wherein the optical component has the base disposed in parallel in front of the substrate. 3. The vehicle lighting device according to claim 2 , wherein each of the light emission surfaces of the light projecting portion and the marker portion is formed on at least the same plane on the surface side of the base body. Before SL labeling unit lighting device for a vehicle according to claim 1, 2 or 3, characterized in that it consists of light guide.