JP2018199389A - Illumination device for vehicle - Google Patents

Abstract

To provide an illumination device for a vehicle which makes parting between a plurality of illumination parts inconspicuous and has good appearance.SOLUTION: An illumination device (10) for a vehicle includes: specific region illumination parts (20 and 22) which are formed of a transparent planar light-emitting body that emits light from first plate surfaces (20B and 22B) and illuminates a specific region (16) in a vehicle room; and a wide region illumination part (24) which is formed of a transparent planer light-emitting body that is arranged so as to be stacked on the specific region illumination parts (20 and 22), emits light from a second plate surface (24B) and illuminates wider regions (18A and 18B) than the specific region (16) in the vehicle room, where the first plate surface is first light-emitting surfaces (20B and 22B) and the second plate surface is a second light-emitting surface (24B), and the first light-emitting surfaces (20B and 22B) and the second light-emitting surface (24B) face in the same direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle lighting device.

  A lighting device as a room lamp, such as a room lamp or a map lamp, is attached to the ceiling of the vehicle. In such an illuminating device, for example, as described in Patent Document 1 below, a plurality of illuminating units are mounted in parallel in a housing of the illuminating device, and each illuminating unit is partitioned by a frame of the housing.

JP 2010-137785 A

  In the illuminating device unit having a plurality of illuminating units as disclosed in the above document, the area in which the room lamp can be arranged in the illuminating device unit is limited in the configuration in which the room lamp and the map lamp are arranged in parallel. End up. For this reason, a room lamp having a large size cannot be mounted in a lighting device unit having a predetermined size. Further, since the plurality of lamps are mounted in parallel and the parting between the lamps is exposed in the vehicle interior, the appearance is not good.

  This invention is completed based on the above situations, Comprising: It aims at providing the illumination device for vehicles with the good appearance which the parting between several illumination parts is not conspicuous.

  The vehicular illumination device of the present invention is laminated on a specific area illumination unit composed of a transparent planar light emitter that emits light from a first plate surface and illuminates a specific area in a vehicle compartment, and the specific area illumination unit. A wide-area illumination unit composed of a transparent planar light emitter that emits light from the second plate surface and illuminates a region wider than the specific region in the vehicle interior, the first plate surface comprising: The first light emitting surface and the second plate surface are second light emitting surfaces, and the first light emitting surface and the second light emitting surface are oriented in the same direction.

  According to such a configuration, since the specific area illumination unit and the wide area illumination unit are arranged in a stacked manner, the specific area illumination unit and the wide area illumination unit do not have a parting and look good. In addition, the wide area illumination unit and the specific area illumination unit can be arranged compactly in the limited installation space for the vehicle illumination device in the vehicle interior, compared to the configuration arranged in parallel, and the entire vehicle illumination device has a wide area. A large proportion of the illumination unit can be secured. As described above, the vehicle illumination device can achieve a compact size, and the size of the wide area illumination unit is ensured, so that the interior of the vehicle can be illuminated brightly.

  A plurality of the specific area illumination units may be provided, and the plurality of specific area illumination units may be arranged in parallel in the plane of the wide area illumination unit.

  According to such a configuration, the entire vehicle illumination device can achieve a compact size while ensuring the size of the wide area illumination unit, and can brightly illuminate the interior of the vehicle, and a plurality of specific area illumination units This makes it possible to selectively illuminate a plurality of specific areas in the vehicle compartment.

  The wide area illumination unit may be configured to be switchable between a low luminance mode in which the luminance on the second light emitting surface is the first luminance and a high luminance mode in which the second luminance is higher than the first luminance. Good.

  According to such a configuration, the luminance on the light emitting surface of the wide area illumination unit can be switched between low luminance and high luminance, and the brightness of the entire vehicle interior illuminated by the wide area illumination unit can be switched. Therefore, the brightness in the passenger compartment can be set to suit the passenger's demands and preferences.

  The wide area illumination unit is arranged closer to the vehicle interior than the specific area illumination unit, and when the specific area illumination unit lighting signal is sent so that at least one of the plurality of specific area illumination units is lit, The wide area illumination unit is set to the low luminance mode, and in the low luminance mode, the first luminance in the second light emitting surface of the wide area illumination unit is higher than the luminance in the first light emitting surface of the specific area illumination unit. Can be expensive.

  According to such a configuration, when at least one of the plurality of specific area illumination units is lit, the light emitting surface of the wide area illumination unit including the plurality of specific area illumination units in the plane is in the low luminance mode. Since the wide-area illumination unit arranged on the vehicle interior side is higher than the specific-area illumination unit, the boundary between the multiple specific-area illumination units becomes inconspicuous, and the vehicle illumination device Looks better.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting device for vehicles with the good appearance which the parting between several illumination parts is not conspicuous can be provided.

The perspective view which looked at the ceiling material in which the illuminating device which concerns on one Embodiment of this invention was installed from the vehicle interior Side view showing the interior of a vehicle provided with the illumination device of the present embodiment Exploded perspective view of lighting device of this embodiment Sectional drawing along the longitudinal direction of the illuminating device of this embodiment.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the lighting device 10 (vehicle lighting device) of the present embodiment is provided on a ceiling material 12 of a vehicle, and a switch 14 for turning on / off the lighting device 10 is provided as a lighting device. 10 is provided.

  As shown in FIGS. 1 and 3, the illumination device 10 has a substantially rectangular shape as a whole in plan view. The illumination device 10 mainly includes a first map lamp 20 (specific area illumination unit), a second map lamp 22 (specific area illumination unit), and a room lamp 24 (wide area illumination unit). The illuminating device 10 further includes a box-shaped case 26 having an opening and a cover frame 34 attached to the opening side of the case 26, and an LED 30 (light source) is provided on the opposing wall portion of the plurality of wall portions of the case 26. LED substrates 28 and 29 having the above are attached. The cover frame 34 has an opening hole 31, and light from the first map lamp 20, the second map lamp 22, and the room lamp 24 is irradiated into the vehicle compartment through the opening hole 31.

  As shown in FIG. 2, the first map lamp 20 or the second map lamp 22 of the lighting device 10 illuminates a specific area 16 in the vehicle interior, and is an illumination unit that illuminates a predetermined position such as the hand of the occupant. The illuminance at the passenger's hand is set very high. The room lamp 24 of the illuminating device 10 is an illuminating unit that illuminates the wide areas 18A and 18B wider than the specific area 16. Light from the room lamp 24 is emitted so as to spread in the vehicle interior, and the illuminance at the occupant's hand is first. It is lower than the map lamp 20 and the second map lamp 22.

  Each of the first map lamp 20, the second map lamp 22, and the room lamp 24 is made of a transparent surface light emitter, for example, a plate-like acrylic resin. The room lamp 24 has a rectangular shape in plan view, and each of the first map lamp 20 and the second map lamp 22 has a rectangular shape in plan view having a size obtained by dividing the rectangular shape of the room lamp 24 into two. Yes. Each of the first map lamp 20, the second map lamp 22, and the room lamp 24 has incident surfaces 20A, 22A, and 24A on which light from the LED 30 is incident.

  The first map lamp 20 is disposed so that the incident surface 20A faces the LED 30 of the LED substrate 29, and the second map lamp 22 faces the LED 30 disposed on the bottom plate side of the case 26 in the LED substrate 28. It is arranged to do. The room lamp 24 is laminated on the first map lamp 20 and the second map lamp 22 so that the incident surface 24A faces the LED 30 arranged on the LED substrate 28 on the opening side of the case 26. As described above, the first map lamp 20 and the second map lamp 22 are arranged in parallel in the plane of the room lamp 24 and overlap the room lamp 24.

  The first map lamp 20, the second map lamp 22, and the room lamp 24 each have a light emitting surface, and light incident from the LED 30 through the incident surfaces 20A, 22A, and 24A is emitted from the light emitting surface. It is comprised so that it may radiate | emit. Specifically, the first map lamp 20 has a map lamp light emitting surface 20B (first plate surface, first light emitting surface), and the second map lamp 22 has a map lamp light emitting surface 22B (first plate surface, first light emitting surface). The room lamp 24 has a room lamp light emitting surface 24B (second plate surface, second light emitting surface).

  The first map lamp so that the map lamp light emitting surface 20B of the first map lamp 20 and the map lamp light emitting surface 22B of the second map lamp 22 are opposed to the opposite surface of the room lamp 24 opposite to the room lamp light emitting surface 24B. 20 and the second map lamp 22 are stacked on the room lamp 24. That is, the first map lamp 20, the second map lamp 22, and the room lamp 24 are arranged so that the light emitting surfaces 20B, 22B, and 24B face the opening hole 31 and face the same direction.

  Next, the operation and effect of the lighting device 10 will be described. Control in the illumination device 10 is executed by a CPU (not shown).

  By operating the switch 14, the first map lamp 20, the second map lamp 22, and the room lamp 24 of the lighting device 10 can be individually turned on and off. When lighting the room lamp 24, the illuminating device 10 has a low luminance mode in which the luminance of the room lamp light emitting surface 24B is set to low luminance (first luminance) and a high luminance mode in which the luminance is set to high luminance (second luminance). It is possible to switch between them.

  When the switch 14 is operated to light the room lamp 24 in the high brightness mode and a high brightness mode lighting signal is sent, all the LEDs 30 facing the incident surface 24A are controlled to emit light. Light from the LED 30 enters the room lamp 24 from the incident surface 24A, travels toward the room lamp light emitting surface 24B while being repeatedly reflected inside, and is emitted from the room lamp light emitting surface 24B so as to spread over a wide area 18A, 18B. . Such outgoing light illuminates the wide areas 18A, 18B with bright light in the vehicle interior.

  When the switch 14 is operated to light the room lamp 24 in the low luminance mode and a low luminance mode lighting signal is sent, some of the LEDs 30 facing the incident surface 24A, for example, half, emit light. To be controlled. Light from the LED 30 enters the room lamp 24 from the incident surface 24A, travels toward the room lamp light emitting surface 24B while being repeatedly reflected inside, and is emitted from the room lamp light emitting surface 24B so as to spread over a wide area 18A, 18B. . Due to such emitted light, the wide areas 18A and 18B are dimmed and illuminated in the vehicle interior. When a low-luminance mode lighting signal is sent, control may be performed so that the amount of light emitted from each LED 30 is reduced without reducing the number of LEDs 30 that emit light.

  As described above, in the illumination device 10 of the present embodiment, the luminance in the room lamp light emitting surface 24B can be selectively set to low luminance or high luminance by switching between the low luminance mode and the high luminance mode. Thereby, the brightness of the whole vehicle interior illuminated by the room lamp 24 can be switched, and the interior of the vehicle interior can be set to a brightness that suits the demands and preferences of the passengers.

  When the switch 14 is operated to turn on the first map lamp 20 or the second map lamp 22, a map lamp lighting signal (specific area lighting unit lighting signal) and a low luminance mode lighting signal are sent. The case where the first map lamp 20 is turned on will be described. The LED 30 facing the incident surface 20A and the LED 30 facing the incident surface 24A emit light. The room lamp 24 emits light in the mode in the low luminance mode as described above.

  When the light from the LED 30 is incident on the incident surface 20A of the first map lamp 20, the incident light travels toward the map lamp light emitting surface 20B while being repeatedly reflected therein, and is emitted from the map lamp light emitting surface 20B. The emitted light from the map lamp 20A is emitted in the specific area 16 without spreading so much toward the occupant's hand, and the occupant's hand is illuminated with bright light with high illuminance.

  As described above, the lighting device 10 of the present embodiment is configured such that the room lamp 24 is lit in the low luminance mode when the first map lamp 20 or the second map lamp 22 is lit. When the first map lamp 20 is lit, the room lamp 24 arranged on the vehicle interior side emits light in the low luminance mode, and the luminance (first luminance) in the room lamp light emitting surface 24B is a map of the first map lamp 20. It is set higher than the luminance in the lamp light emitting surface 20B.

  With such a configuration, even when only the first map lamp 20 among the map lamps arranged in parallel is turned on, the entire room lamp 24 visible from the opening hole 31 in the vehicle interior is from the map lamp light emitting surface 20B. Also shines with high brightness. Therefore, the boundary 32 (see FIG. 4) between the first map lamp 20 that is stacked and lit on the back side of the room lamp 24 and the non-lighted second map lamp 22 is difficult to be visually recognized from the interior of the vehicle, and looks good. good. The lighting device 10 operates in the same manner when the second map lamp 22 is turned on.

  For example, when one of a plurality of map lamps arranged in parallel is turned on and a room lamp stacked on the map lamp is not turned on, only one map lamp is turned on when viewed from inside the vehicle compartment. Therefore, only a part of the room lamp is lit. In such a lighting device, a boundary between a plurality of map lamps is visually recognized by a vehicle occupant, and the appearance is not good.

  Further, when the first map lamp 20 or the second map lamp 22 is lit, the room lamp 24 that is superimposed on the vehicle interior side is lit in the low luminance mode. When viewed, the light emitting surface of the illumination device 10 appears to shine almost uniformly on the entire surface, and the appearance is good.

  Further, as described above, the first map lamp 20 and the second map lamp 22 made of the planar light emitter are arranged in parallel in the plane of the room lamp 24 made of the planar light emitter, and the room Laminated on the lamp 24. Therefore, the room lamp 24 and the map lamps 20 and 22 can be arranged compactly in a limited installation space of the lighting device in the vehicle interior, and a large proportion of the room lamp 24 occupies the entire lighting device 10. it can. Specifically, the room lamp 24 having the same size as that of the case 26, that is, the entire lighting device 10, can be attached. Thus, since the size of the room lamp 24 is ensured while realizing the compact size of the lighting device 10, the interior of the vehicle can be illuminated brightly.

  On the other hand, in a configuration in which a plurality of map lamps and room lamps are arranged in parallel, for example, when a room lamp and two map lamps are attached in parallel to the case 26 of the same size, the room lamp is the room lamp in this embodiment. It becomes considerably smaller than the size of the lamp 24. Further, when two room lamps 24 of the same size as the present embodiment are mounted in parallel with the map lamp, the size of the case 26 is increased and the entire lighting device is enlarged, so that the appearance in the vehicle interior is not good. . Moreover, when the attachment location of an illuminating device is small, it cannot attach.

  In addition, since the first map lamp 20 and the second map lamp 22 are provided to irradiate different specific areas, it is possible to selectively illuminate a plurality of specific areas in the vehicle compartment. Become. For example, in the present embodiment, the first map lamp 20 is configured to illuminate the hand of the occupant in the left seat of the vehicle, and the second map lamp 22 is configured to illuminate the hand of the occupant in the right seat of the vehicle. It can be turned on or off individually as required by the passenger.

  The first map lamp 20 and the second map lamp 22 are lights that irradiate the specific area 16 with light, respectively, and the illuminance at a predetermined position such as the hand of the occupant is very high. The first map lamp 20 and the second map lamp 22 If the light emitted from the vehicle directly enters the eyes of the occupant, the occupant may feel very dazzled and feel uncomfortable.

  In the present embodiment, the first map lamp 20 and the second map lamp 22 are surface-treated so that the emitted light from the first map lamp 20 and the second map lamp 22 irradiates only a predetermined position. Specifically, the 1 map lamp 20 and the second map lamp 22 are configured to shift the optical axis of the emitted light toward a predetermined position such as the occupant's hand and the sight line direction of the occupant by light distribution by lens processing. With such a configuration, even when the first map lamp 20 and the second map lamp 22 are lit, it is suppressed that the passenger feels dazzling.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above-described embodiment, the lighting device 10 in which the first map lamp 20 and the second map lamp 22 configured by the planar light emitter are arranged in parallel and stacked on the room lamp 24 is exemplified. However, it is not limited to this. For example, a configuration may be adopted in which one map lamp is stacked on the room lamp. In this case, the lighting device has a good appearance because there are no boundaries or parting between lamps. Furthermore, the lighting device can be reduced in size while including a room lamp and a map lamp.

  (2) In the above embodiment, the illumination range of the room lamp 24 is exemplified as the wide area 18B and the wider area 18A. However, the present invention is not limited to this and can be set as appropriate. Further, the irradiation range and irradiation position of the first map lamp 20 and the second map lamp 22 can be set as appropriate.

  (3) In the above embodiment, two map lamps are provided for the room lamp, but one or more than three map lamps may be provided.

  (4) In the said embodiment, although LED was illustrated as a light source, it is not limited to this.

  (5) In the above embodiment, the map lamp is exemplified as the specific area illumination unit. However, the present invention is not limited to this, and the specific area illumination unit may include a spot lamp that irradiates a switch or the like provided in the vehicle. Good. Further, the wide area illumination unit is not limited to the room lamp.

  (6) In the above embodiment, the room lamp 24 is arranged on the vehicle interior side. However, the present invention is not limited to this, and a map lamp may be stacked on the vehicle interior side with respect to the room lamp.

  (7) In the said embodiment, although the illuminating device provided what was provided in the ceiling material of a vehicle, it is not restricted to this.

  DESCRIPTION OF SYMBOLS 10 ... Illuminating device (vehicle lighting device), 16 ... Specific area | region, 18A, 18B ... Wide area, 20 ... 1st map lamp (specific area illumination part, planar light-emitting body), 22 ... 2nd map lamp (specific area illumination) Part, planar light emitter), 20A, 22A ... incidence surface, 20B, 22B ... map lamp light emitting surface (first plate surface, first light emitting surface), 24 ... room lamp (wide illumination part, planar light emitter), 24A ... incident surface, 24B ... room lamp light emitting surface (second plate surface, second light emitting surface), 26 ... case, 30 ... LED, 31 ... open hole, 32 ... boundary, 34 ... cover frame

Claims (4)

A specific area illumination unit composed of a transparent planar light emitter that emits light from the first plate surface and illuminates the specific area in the vehicle interior;
A wide-area illumination unit that is arranged in a stacked manner on the specific area illumination unit, and is configured by a transparent planar light emitter that emits light from the second plate surface and illuminates an area wider than the specific area in the vehicle interior; Prepared,
The first plate surface is a first light emitting surface, the second plate surface is a second light emitting surface, and the first light emitting surface and the second light emitting surface are oriented in the same direction. Lighting device.   2. The vehicle illumination device according to claim 1, wherein a plurality of the specific area illumination units are provided, and the plurality of specific area illumination units are arranged in parallel in a plane of the wide area illumination unit. .   The wide area illumination unit is configured to be switchable between a low luminance mode in which the luminance on the second light emitting surface is the first luminance and a high luminance mode in which the second luminance is higher than the first luminance. The vehicle lighting device according to claim 2. The wide area illumination unit is arranged closer to the vehicle interior than the specific area illumination unit,
When the specific area illumination unit lighting signal is sent so that at least one of the plurality of specific area illumination units is lit, the wide area illumination unit is set to the low luminance mode,
The said 1st brightness | luminance in the said 2nd light emission surface of the said wide area illumination part is higher than the brightness | luminance in the said 1st light emission surface of the said specific area illumination part in the said low brightness mode. Vehicle lighting device.

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