JP6292369B2 - Automotive interior lighting equipment - Google Patents

Description

Embodiments described herein relate generally to a vehicle interior lighting device using a light emitting element.

  2. Description of the Related Art Conventionally, there is an illumination device that includes a light emitting element and a light-transmitting cover that covers the light emitting element.

  Further, in a ceiling light using a plurality of light emitting elements as a light source, the light emitting elements are generally covered with milky white shade to suppress glare. In addition, there is a thing that enhances the production effect so that the shade is scattered with multiple sparkles and looks shimmering. This is a process of forming a light diffusion region on the inner surface of the transparent shade and forming a plurality of transparent dots in the light diffusion region, and the light from the plurality of light emitting elements is shaded from the plurality of transparent dots. By passing through the shade, the shade is dotted with multiple radiances, making it look sparkling.

JP 2012-206603 A

  Conventionally, in order to suppress glare and obtain the effect of glittering light, it has been necessary to perform processing on the shade itself, which has not been easy.

Problem to be solved by the invention is providing the illuminating device for vehicle interior lights which can suppress the glare and can obtain the production effect by the glittering light with a simple configuration.

An automotive interior light illumination device according to an embodiment is an automotive interior light illumination device that illuminates an interior illumination space, and includes a light emitting element, a light transmission member, and a cover. The light transmitting member is opposed to the light emitting element with a predetermined interval, has a light transmitting area with a predetermined light transmittance through which light from the light emitting element is transmitted, and has a light transmittance relative to a part of the light transmitting area. A plurality of large high transmittance portions. The cover covers the light emitting element and the light transmissive member and has light transmittance. The high transmittance part of the light transmissive member is composed of small circular holes or transparent parts, and randomly scattered throughout the entire light transmissive area.

  According to the present invention, the glare is suppressed in the light transmission region of the light transmission member by a simple configuration in which the light transmission member is disposed between the light emitting element and the cover, and the plurality of high transmittance portions are caused by the glitter light. It can be expected to produce a production effect.

It is sectional drawing of the illuminating device which shows 1st Embodiment. It is a front view of an illuminating device same as the above. It is a front view of the light transmissive member of an illuminating device same as the above. It is sectional drawing of the illuminating device which shows 2nd Embodiment. It is a front view of an illuminating device same as the above. It is a perspective view of the illuminating device which shows 3rd Embodiment.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1 and FIG. 2, the lighting device 10 is, for example, a car interior light, and includes a case 11 as a lighting device body attached to the vehicle side, a light emitting module 12 attached in the case 11, and a light emitting module 12. The light transmission member 13 disposed on the front side of the case 11 so as to face the light, the cover 14 that covers the light emitting module 12 and the light transmission member 13 and is attached to the front side of the case 11, and the lighting mode of the lighting device 10 are selected. A switch unit 15 is provided.

  The case 11 has a back surface portion 17, a peripheral wall portion 18 formed forward from the peripheral portion of the back surface portion 17, and a flange portion 19 formed from the front end of the peripheral wall portion 18 toward the periphery. , Is formed horizontally long in the width direction. An opening 20 in which the inside of the case 11 opens is formed on the front surface of the peripheral wall portion 18, and a concave portion 21 to which the light transmitting member 13 and the cover 14 are attached is formed in the flange portion 19.

  The light emitting module 12 includes a substrate 24 and a plurality of light emitting elements 25 mounted on the front surface of the substrate 24. The substrate 24 is formed horizontally along the width direction of the case 11, and the back side of the substrate 24 is attached to the back surface portion 17 of the case 11. The light emitting element 25 is, for example, an LED, and, for example, three LEDs are arranged along the longitudinal direction of the substrate 24. Note that the inside of the case 11 may be processed on a highly reflective surface or may be provided with a reflecting member so that the light emitted from the light emitting element 25 can be reflected and taken out from the lighting device 10 efficiently.

  Further, as shown in FIGS. 1 to 3, the light transmitting member 13 is a thin sheet made of, for example, resin, and has a size and shape larger than the outer shape of the opening 20 and can be fitted into the recess 21 of the flange portion 19. ing. Further, the light transmission member 13 is formed with an insertion hole 28 through which the switch unit 15 is inserted. The light transmitting member 13 disposed in the concave portion 21 of the flange portion 19 is opposed to the plurality of light emitting elements 25 with a predetermined interval.

  The light transmitting member 13 is formed in, for example, milky white as a whole, and is formed in a light transmitting region 29 having a predetermined light transmittance. In the light transmitting region 29, a plurality of light transmittances are relatively large. A high transmittance part 30 is provided. The high transmittance part 30 is configured by, for example, a small circular hole or a transparent part, and is randomly scattered in the entire area of the light transmission region 29.

  As shown in FIGS. 1 and 2, the cover 14 is made of a transparent resin, for example, and has a size and a shape that are larger than the outer shape of the opening 20 and can be fitted into the recess 21 of the flange portion 19. An edge portion 32 protruding to the rear side is formed in the peripheral portion of the cover 14, and an insertion hole 33 through which the switch unit 15 is inserted is formed in the inner portion of the cover 14. A plurality of claw portions 34 project from the periphery of the cover 14 and are fitted into the recesses 21 so that the plurality of claw portions 34 are hooked and attached to the case 11 side.

  The cover 14 is formed with optical control means 35 for controlling the emission direction of the light emitted from the cover 14 on the inner surface on which the light transmitted through the light transmission member 13 is incident. The optical control means 35 is formed of a plurality of lens portions 36 having a curved shape in which the side on which light transmitted through the light transmitting member 13 is incident is a spherical concave surface. The plurality of lens portions 36 are formed in the entire area excluding the peripheral portion of the cover 14 and the portion of the insertion hole 33.

  The high transmittance part 30 and the lens part 36 of the light transmitting member 13 have the same size (diameter), substantially the same size (diameter), and the lens part 36 is slightly larger (diameter) than the high transmittance part 30. Either is preferable. For example, the lens portion 36 is preferably in a range of not less than twice the size (diameter) of the high transmittance portion 30 and less than twice the size (diameter) of the high transmittance portion 30.

  The switch unit 15 is configured by a slide switch having a slide operation unit 38. The light emitting element 25 is always turned on at the on position where the slide operation unit 38 is slid to one end side, and the light emitting element 25 is always turned off at the off position where it is slid to the other end side, and the door interlocks between the one end side and the other end side. At the position, the light emitting element 25 is turned on and off in conjunction with the opening and closing of the door of the automobile.

  In the illuminating device 10 configured as described above, when the light emitting element 25 is turned on, the light emitted from the plurality of light emitting elements 25 passes through the light transmitting member 13 and the cover 14 and is irradiated to the illumination space in the vehicle.

  Light incident on the light transmission region 29 of the light transmission member 13 from the plurality of light emitting elements 25 is diffused in the light transmission region 29 and incident on the plurality of lens portions 36 of the cover 14, and further diffused by the plurality of lens portions 36. The light is emitted from the front surface of the cover 14 to the illumination space. At this time, since the plurality of light emitting elements 25 are covered with the light transmitting region 29 of the light transmitting member 13, light from the light emitting elements 25 is diffused and glare is suppressed.

  The light that has entered the high transmittance portions 30 of the light transmitting member 13 from the plurality of light emitting elements 25 is not diffused and passes through the light transmitting member 13 with a higher luminous intensity than the light that passes through the light transmitting region 29. Then, the light enters the lens portion 36 of the cover 14, is projected by the lens portion 36, and is emitted from the front surface of the cover 14.

  The entire cover 14 shines uniformly with the light transmitted through the light transmissive region 29 of the light transmissive member 13, and light transmitted through the plurality of high transmittance portions 30 of the light transmissive member 13 passes through the cover 14 to a plurality of bright spots. As a result, it can be seen as a plurality of sparkling lights, and further, the position where the cover 14 is viewed can be changed, so that an effect can be obtained in which the plurality of sparkling lights on the cover 14 are sparkling.

  Thus, in the lighting device 10, glare is suppressed in the light transmission region 29 of the light transmission member 13 with a simple configuration in which the light transmission member 13 is simply disposed between the light emitting element 25 and the cover 14, and a plurality of light transmission members 13 are provided. The high transmittance part 30 can provide the effect of glittering light.

  Further, the cover 14 has optical control means 35 for controlling the emission direction of the light emitted from the cover 14 on the surface on which the light transmitted through the light transmission member 13 is incident, thereby suppressing glare and producing the effect by the glittering light. The effect can be improved.

  In addition, by forming the optical control means 35 with a plurality of curved lens portions 36, the light that passes through the plurality of high transmittance portions 30 of the light transmitting member 13 is projected by the lens portions 36, and the cover 14 is in any direction. The glittering light can be seen even when viewed from above, and a plurality of glittering lights can be made to glitter by changing the position where the cover 14 is viewed.

  The high transmittance portion 30 and the lens portion 36 of the light transmitting member 13 have the same size (diameter), substantially the same size (diameter), and the lens portion 36 is slightly larger than the high transmittance portion 30 (diameter). ). For example, the lens portion 36 is preferably in a range of not less than twice the size (diameter) of the high transmittance portion 30 and less than twice the size (diameter) of the high transmittance portion 30. If the lens portion 36 is smaller than the high transmittance portion 30, the light transmitted through the high transmittance portion 30 is likely to be dispersed in the plurality of lens portions 36, and the glittering light becomes weak. Also, the lens portion 36 becomes a high transmittance portion. If it is too large (for example, more than twice the size of the high transmittance portion 30), the light transmitted through the high transmittance portion 30 is directly emitted and glare is likely to occur.

  Further, the light transmission member 13 is disposed closer to the cover 14 than the light emitting element 25, and the distance from the light emitting element 25 is widened. If the distance between the light transmissive member 13 and the light emitting element 25 is small, it is difficult for the light transmissive member 13 away from the light emitting element 25 to emit glitter light, but the distance between the light transmissive member 13 and the light emitting element 25 is wide. Thus, the glittering light can be easily emitted from the position of the light transmitting member 13 away from the light emitting element 25.

  Next, a second embodiment will be described with reference to FIG. 4 and FIG. Note that the same reference numerals as those in the first embodiment are used, and descriptions of the same configurations and effects are omitted.

  An annular frame portion 40 disposed on the front side of the flange portion 19 of the case 11 is integrally formed on the periphery of the cover 14. A plurality of emission prisms 41 in the surface direction along the front surface of the cover 14 are formed on the front surface of the frame portion 40.

  A plurality of vertical incident prisms 42 perpendicular to the front surface of the cover 14 are formed on the inner peripheral surface of the edge portion 32 protruding to the back side of the cover 14, and the light from the light emitting element 25 is framed outside the edge portion 32. An inclined surface 43 that functions as a reflecting surface that reflects to the portion 40 is formed.

  When the plurality of light emitting elements 25 are turned on, in the central area of the cover 14, the entire central area of the cover 14 is uniform with the light transmitted through the light transmitting area 29 of the light transmitting member 13 as in the first embodiment. As the light transmitted through the plurality of high transmittance portions 30 of the light transmitting member 13 is scattered as a plurality of bright spots in the central area of the cover 14, it appears as a plurality of sparkling lights. By changing the position where the cover 14 is viewed, it is possible to obtain a production effect in which a plurality of sparkling lights on the cover 14 appear to flash.

  Further, a part of the light incident on the incident prism 42 of the cover 14 from the light emitting element 25 is directly directed to the frame part 40, and a part of the light is reflected by the inclined surface 43 and directed to the frame part 40. The light is emitted from the emission prism 41. Thereby, it is possible to obtain an effect that the frame portion 40 of the cover 14 looks shining.

  The light transmitting member 13 may be attached to the inside of the edge portion 32 of the cover 14 so that the light from the light emitting element 25 is directly incident on the incident prism 42. In this case, the light transmitted through the light transmitting member 13 is transmitted. Compared with the case where the light enters the incident prism 42, the brightness of the frame portion 40 is increased, and the production effect can be improved.

  Next, a third embodiment will be described with reference to FIG. Note that the same reference numerals as those of the embodiments are used, and the description of the same configurations and effects is omitted.

  The lighting device 10 of the present embodiment is a lighting device for a wall surface called a bracket. The lighting device body attached to the wall surface, the light emitting module 12 attached to the lighting device body, and the lighting device 12 covering the light emitting module 12 A cover 14 attached to the main body is provided.

  By arranging the light transmissive member 13 between the light emitting element 25 of the light emitting module 12 and the cover 14, glare is suppressed in the light transmissive region 29 of the light transmissive member 13, and a plurality of high transmittance portions 30 produce effects by glittering light An effect can be obtained.

  In each of the above embodiments, the optical control means 35 (lens portion 36) of the cover 14 is not limited to a spherical shape, and may be a conical shape or a polygonal pyramid shape.

  Further, the cover 14 does not need to form the plurality of lens portions 36. Even in this case, the light transmitted through the plurality of high transmittance portions 30 of the light transmitting member 13 to the cover 14 becomes a plurality of bright spots. By being scattered, it can be seen as a glittering light.

  Further, the lighting device 10 is not limited to a bracket, and can be applied to a lighting device using a cover such as a ceiling light.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
13 Light transmissive member
14 Cover
25 Light emitting element
29 Light transmission region
30 High transmittance part
35 Optical control means
36 Lens section

Claims (3)

An automotive interior lighting device that illuminates an interior lighting space,
A light emitting element;
A light transmission region having a predetermined light transmittance is provided so as to face the light emitting device with a predetermined interval and transmit light from the light emitting device, and a light transmittance is relative to a part of the light transmission region. A light transmissive member provided with a plurality of large high transmittance portions;
A light-transmitting cover that covers the light-emitting element and the light-transmitting member;
Comprising
The high transmittance part of the light transmissive member is configured by a small circular hole or a transparent part, and is randomly scattered in the entire area of the light transmissive area. . The automobile interior according to claim 1, wherein the cover includes an optical control unit that controls an emission direction of light emitted from the cover on a surface on which light transmitted through the light transmission member is incident. Lighting device for lamps. The illuminating device for an automobile interior light according to claim 2, wherein the optical control means is formed by a plurality of curved lens portions.

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