JP2018206570A - Lens component of lighting device - Google Patents

Abstract

To provide a lens component of a lighting device which prevents formation of a dark part in the lens component and can improve design property.SOLUTION: A lens component of a lighting device includes: a lens cover 30 formed of a plate-like member through which the light from a light source of the lighting device can transmit and having a lens pattern 42 composed of a plurality of protrusions 40 on a back surface of the plate-like member in which the light from the light source enters; and a rib 34 standing on a back surface of the lens cover 30 in a vicinity of one end part 33 of the plate-like member. When the lens component is attached to a lighting device housing, an engagement part 36 that engages with a housing-side engaging part of the lighting device housing is provided so as to further extend from the rib 34. The light from the light source can transmit through the rib 34 and the engaging part 36, and a lens pattern 42 is provided at a standing tip face 34A of the rib 34 and an extending tip face 36A of the engaging part 36.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lens component of a 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 housing that houses a light source unit has an opening on the light emitting side, and a frame is attached to the opening. The outer lens is attached to the frame by engaging the engaging member provided on the frame and the engaging member provided on the outer lens.

JP 2009-67098 A

  In the configuration disclosed in the above document, the engagement portion between the engagement member of the frame body and the engagement member of the outer lens overlaps the frame body, and therefore cannot be visually recognized from the vehicle interior via the outer lens. Arranged in position. However, when the lighting device is disposed directly adjacent to another functional component, a configuration in which no frame is provided between the lighting device and the other functional component is employed in order to improve design. In such a configuration, since there is no frame between the lighting device and the other functional parts, the engaging member cannot be formed in a portion of the outer lens adjacent to the other functional parts.

  Therefore, an engagement member is provided on the lens surface inside the outer lens adjacent to the end portion adjacent to other functional components, and the housing side is positioned so as to overlap with the engagement member of the outer lens when the outer lens is attached to the housing. It is conceivable that the engaging member is provided and the outer lens is attached to the casing adjacent to other functional parts.

  However, since the engaging member is provided on the lens surface on the inner side of the end portion of the outer lens, the engaging portion is visually recognized as a dark part when attached to the housing, and the appearance is not good. There was a problem. In particular, when the lighting device is turned on, the engaging portion appears dark and the appearance is not good.

  The present invention has been completed based on the above circumstances, and it is an object of the present invention to provide a lens component of a lighting device in which a dark portion is unlikely to be formed in a lens portion and design characteristics can be improved. .

  In order to solve the above-mentioned problems, the present invention provides a lens component of a lighting device, comprising a plate-like member capable of transmitting light from the light source of the lighting device, and receiving the light from the light source. A lens cover having a lens pattern composed of a plurality of convex portions on the back surface of the member, and a rib standing from the back surface of the lens cover in the vicinity of one end of the plate member, When the lens component is attached to the lighting device housing, an engaging portion that engages with a housing side engaging portion of the lighting device housing is further extended from the rib, and the rib and the engaging portion are Light from the light source can be transmitted, and the lens pattern is provided on the standing tip surface of the rib and the extending tip surface of the engaging portion.

  In such a configuration, since the same lens pattern as the lens pattern on the back surface of the lens cover is formed on the rib and the engaging portion, the light transmitted through the rib and the engaging portion also passes through other portions of the lens cover. It is emitted from the surface of the lens cover while being reflected or refracted in the same manner as the transmitted light. Therefore, as compared with a configuration in which the same lens pattern as the lens pattern on the back surface of the lens cover is not formed, more light is transmitted through the rib and the engaging portion.

  As a result, in a state where the engaging portion of the lens cover is attached to the housing-side engaging portion of the lighting device housing, the portion where the rib and the engaging portion are provided on the surface of the lens cover is difficult to be visually recognized as a dark portion. Since it is difficult to be visually recognized as a dark part even when the device is turned on, the design of the lens cover and the lens component is improved.

  When the lens component is attached to the lighting device housing, the one end portion of the plate-like member arranged in the vicinity of the rib is arranged to directly face a member different from the lighting device. Can be.

  According to such a configuration, the other member arranged adjacent to the lighting device and the one end portion of the lens component are arranged directly opposite to each other, so that the other member and the lens component are arranged so as to be continuous. Further, the design properties are improved.

  The engaging portion has an engaging convex portion that is engaged with an engaging hole constituting the housing side engaging portion of the lighting device housing when the lens component is attached to the lighting device housing. Can be.

  According to such a configuration, the engaging convex portion of the engaging portion is engaged with the engaging hole of the lighting device housing, whereby the lens component can be easily and stably attached to the lighting device housing.

  A convex part pattern consisting of a plurality of convex parts different from the lens pattern on the side wall part standing on the back surface side from the end part of the plate-like member of the lens cover and the standing front end surface of the side wall part It can have.

  According to such a configuration, since the end portion of the lens cover has a convex pattern different from the lens pattern, it is difficult for the dark portion to be visually recognized at the end portion of the lens cover. The design of the parts is improved.

  Each of the plurality of convex portions of the lens pattern may have a quadrangular pyramid shape, and each of the plurality of convex portions of the convex portion pattern may have a semi-cylindrical shape.

  According to such a configuration, it is possible to easily make a lens component having each lens pattern and convex pattern.

  ADVANTAGE OF THE INVENTION According to this invention, it is hard to form a dark part in the lens part of an illuminating device, and it is possible to improve the design property in the lens component of an illuminating device.

Explanatory drawing which shows the illumination unit which concerns on one Embodiment of this invention received by the ceiling material of a vehicle Perspective view of the lighting unit Perspective view of unit housing and lighting device of lighting unit Perspective view of main parts of illumination lens Cross section of the main part of the lighting unit

  An embodiment of the present invention will be described with reference to FIGS. In the present embodiment, an illumination unit 4 attached to a vehicle ceiling material 2 as shown in FIG. 1 will be described. The lighting unit 4 is arranged in the center of the vehicle width between the driver's seat and the passenger seat or between the front seat and the rear seat in the ceiling material 2.

  As shown in FIG. 2, the illumination unit 4 includes an illumination device 6 and a display device 8 (another member). The display device 8 has a display function as a digital clock, for example, and displays time. doing. In the illumination unit 4, the illumination device 6 and the display device 8 are arranged such that one end portion 33 of the lens component 12 of the illumination device 6 and one end of the display panel 14 of the display device 8 are continuously arranged at a predetermined angle in the alignment unit 16. It is attached to the unit housing 10 (lighting device housing).

  The structure of the unit housing 10 is demonstrated with reference to FIG.2 and FIG.3. The unit housing 10 includes a substantially quadrangular frame portion 19 in which a lighting device mounting portion 18 and a display device mounting portion 20 are provided adjacent to each other. As shown in FIG. 4, the lighting device mounting portion 18 has a lens exposure opening 22 that can expose the lens component 12 of the lighting device 6, and the display device mounting portion 20 exposes the display panel 14 of the display device 8. A possible display surface exposure opening 24 is provided. In the adjacent portion between the illumination device mounting portion 18 and the display device mounting portion 20, the lens exposure opening 22 and the display surface exposure opening 24 are provided continuously.

  As shown in FIG. 3, the illumination device mounting portion 18 is a box surrounded by a wall portion 29 extending from the frame portion 19 and a plate member 26 provided to face the lens exposure opening 22. The light source 5 (see FIG. 5) is attached to the inside, and the lens component 12 is attached so as to cover the lens exposure opening 22. The lighting device mounting portion 18 of the unit housing 10 is provided with a housing side engaging portion 28, and the engaging portion 36 provided on the lens component 12 is engaged with the housing side engaging portion 28, whereby the lens component. 12 is attached to the illumination device attachment portion 18. In the present embodiment, the housing side engaging portion 28 is an engaging hole. As shown in FIG. 2, the lens cover 30 of the lens component 12 is exposed to the outside through the lens exposure opening 22 in a state where the lens component 12 is mounted on the lighting device mounting portion 18.

  The display device 8 is attached to the display device mounting portion 20, and the display panel 14 is exposed to the outside from the display surface exposure opening 24 as shown in FIG. In a state in which the illumination device 6 and the display device 8 are attached to the unit housing 10, as shown in FIGS. 2 and 5, the display panel 14 and the lens cover 30 of the lens component 12 are continuous in the alignment unit 16. Adjacent to each other.

  Next, the configuration of the lens component 12 will be described in detail. As shown in FIG. 3, the lens component 12 includes a lens cover 30 made of a plate-like member capable of transmitting light, a side wall portion 32 provided upright at a peripheral end portion of the lens cover 30, and the lens cover 30. In the vicinity of the one end portion 33, the rib 34 is erected from the lens cover 30. The ribs 34 are formed so as to connect the side wall portions 32 facing each other. An engaging portion 38 is formed on the side wall portion 32 arranged so as to face the rib 34, and a convex portion of the engaging portion 38 is an engaging hole (not shown) provided in the lighting device mounting portion 18. ).

  As shown in FIG. 5, in the lens cover 30 of the lens component 12, the front surface 30A is exposed from the lens exposure opening 22, and the light from the light source 5 is incident on the back surface 30B. As shown in FIG. 4, a lens pattern 42 including a plurality of convex portions 40 is formed on the back surface 30 </ b> B of the lens cover 30. In the present embodiment, each convex portion 40 of the lens pattern 42 has a quadrangular pyramid shape, and the plurality of convex portions 40 are formed in a matrix with no gaps.

  As shown in FIG. 4, the rib 34 is erected from the back surface 30 </ b> B of the lens cover 30. An engaging portion 36 is provided so as to further extend from the rib 34, and the engaging portion 36 has an engaging convex portion 46 at the tip portion. When the lens component 12 is attached to the lighting device attachment portion 18 of the unit housing 10, the engagement convex portion 46 is fixed by being inserted into the engagement hole which is the housing side engagement portion 28. Similarly to the lens cover 30, the rib 34 and the engaging portion 36 are also made of a light transmissive material. A lens pattern 42 similar to the back surface 30B of the lens cover 30 is formed on the standing tip surface 34A of the rib 34 and the extending tip surface 36A of the engaging portion 36, and a plurality of convex portions 40 are formed.

  A convex pattern 50 composed of a plurality of convex portions 48 different from the lens pattern 42 is formed on the standing front end surface 32 </ b> A of the side wall portion 32. In the present embodiment, each convex portion 48 of the convex pattern 50 has a substantially semi-cylindrical shape. A lens pattern 42 is also formed on the front end surface of the engaging portion 38 provided on the side wall portion 32. With such a configuration, it is difficult for the dark part to be visually recognized even at the end of the lens cover 30, and the design of the lens cover 30 and the illumination device 6 is improved.

  Next, the operation and effect of the lens component 12 will be described. In the illumination unit 4, the one end portion 33 of the lens component 12 of the illumination device 6 is disposed adjacent to and directly opposed to the display panel 14 of the display device 8, as shown in FIGS. 2 and 6. The configuration is such that the mating unit 16 is continuously arranged. In such a configuration, in order to improve the design, the one end portion 33 of the lens component 12 is continuously arranged with one end of the display panel 14, so that the engaging portion cannot be formed. Therefore, in the vicinity of the one end portion 33 of the lens cover 30, the rib 34 is erected from the back surface 30 </ b> B to form the engaging portion 36.

  In such a configuration, when the lens pattern 42 is not formed on the rib standing from the back surface of the lens cover and the engaging portion extending from the rib, the amount of light emitted from the surface of the other part of the lens cover As compared with the above, the amount of light emitted from the surface of the lens cover is reduced at the portion overlapping the rib and the engaging portion. Therefore, the rib and the engaging portion are visually recognized as dark portions on the surface of the lens cover.

  In the configuration of the present embodiment, a lens pattern 42 similar to the back surface 30B of the lens cover 30 is formed on the standing tip surface 34A of the rib 34 and the extending tip surface 36A of the engaging portion 36, and a plurality of lens patterns 42 are formed. A convex portion 40 is formed. Therefore, the light incident from the standing tip surface 34A of the rib 34 and the extending tip surface 36A of the engaging portion 36 is reflected or refracted in the same manner as the illumination light passing through the other part of the lens cover 30, and the rib 34 and the engagement. Since it passes through the joint portion 36, when the lens cover 30 is viewed from the front surface 30A, the rib 34 and the engaging portion 36 are not easily recognized as dark portions (see FIG. 2). Compared to the configuration in which the lens pattern 42 is not provided in the rib and the engagement portion as described above, more illumination light from the light source passes through the rib 34 and the engagement portion 36, and thus the rib 34 and the engagement portion 36. Is difficult to see as a dark part.

  As described above, in the present embodiment, in the lens cover 30 that is arranged adjacent to the display panel 14 that is another member so as to be continuous, the engaging portion of the lens cover 30 to the unit housing 10 is the lens cover 30. It is hard to be visually recognized as a dark part from the surface. Therefore, it is possible to improve the designability of the lighting device 6.

<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.

  In the present embodiment, the convex portion pattern 50 having a convex portion shape different from that of the lens cover 30 is formed on the side wall portion 32, but the same convex portion 40 as the lens pattern 42 of the lens cover 30 is formed. May be.

  DESCRIPTION OF SYMBOLS 5 ... Light source, 6 ... Illuminating device, 8 ... Display apparatus (another member), 10 ... Unit housing (illuminating device housing), 12 ... Lens component, 14 ... Display panel, 16 ... Positioning part, 28 ... Housing side Joint part, 30 ... Lens cover, 30A ... Front surface, 30B ... Back surface, 32 ... Side wall part, 32A ... Erecting tip surface, 33 ... One end part, 34 ... Rib, 34A ... Erecting tip surface, 36 ... Engagement part, 36A ... Extension tip surface, 38 ... Engagement part, 40 ... Convex part, 42 ... Lens pattern, 46 ... Engagement convex part, 48 ... Projection part, 50 ... Convex part pattern

Claims (5)

A lens component of a lighting device,
A lens cover having a lens pattern composed of a plurality of convex portions on the back surface of the plate-like member on which light from the light source is incident, and a plate-like member capable of transmitting light from the light source of the illumination device;
A rib erected from the back surface of the lens cover in the vicinity of one end of the plate-like member,
When the lens component is attached to the lighting device housing, an engaging portion that engages with a housing side engaging portion of the lighting device housing is further extended from the rib,
The rib and the engaging portion are capable of transmitting light from the light source, and have the lens pattern on the standing tip surface of the rib and the extending tip surface of the engaging portion. Lens parts for lighting equipment.   When the lens component is attached to the lighting device housing, the one end portion of the plate-like member arranged in the vicinity of the rib is arranged to directly face a member different from the lighting device. The lens component of the illumination device according to claim 1.   The engaging portion has an engaging convex portion that is engaged with an engaging hole constituting the housing side engaging portion of the lighting device housing when the lens component is attached to the lighting device housing. The lens component of the illumination device according to claim 1, wherein the lens component is a lens component. A side wall portion standing on the back side from the end of the plate-like member of the lens cover;
4. The convex portion pattern including a plurality of convex portions different from the lens pattern is provided on a standing front end surface of the side wall portion. 5. Lens parts for lighting equipment. Each of the plurality of convex portions of the lens pattern has a quadrangular pyramid shape,
The lens component of the lighting device according to claim 4, wherein each of the plurality of convex portions of the convex pattern has a semi-cylindrical shape.

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