JP6464852B2 - Lighting device - Google Patents

Description

  The present invention relates to an illuminating device for illuminating, for example, a plurality of illuminated members mounted in a vehicle meter and arranged in parallel.

  Conventionally, as this kind of illumination device, for example, the one described in Patent Document 1 below is known. The lighting device described in Patent Document 1 includes a first illuminated member including at least a first display panel that displays first display information (for example, time), and second display information (for example, traveling of a vehicle). A second illuminated member having at least a second display panel for displaying (distance) is arranged side by side.

  In this case, as the first member to be illuminated, the first display panel, a first light source for supplying light to the first display panel, the first display panel, and the first light source And a second light source for supplying light to the second display panel as a second member to be illuminated, and a second light source for supplying light to the second display panel. A configuration is employed in which a second light diffusion plate positioned between the second display panel and the second light source is provided (see, for example, Patent Document 2 below).

JP 2009-85664 A JP 2009-287937 A

By the way, when the structure described in Patent Document 2 is applied to the structure described in Patent Document 1, when both the first and second members to be illuminated are illuminated. A plurality of light diffusing plates for diffusing light are required for each member to be illuminated (that is, if there are two members to be illuminated, two light diffusing plates are required, the same as the number of members to be illuminated) As a result, the number of parts constituting the lighting device increases, so that the assembling costs and the parts costs increase, resulting in a cost increase (cost increase).
Therefore, the present invention aims to provide an illumination device capable of suppressing an increase in cost in order to cope with the above-described problems.

The present invention provides a lighting device in which a first illuminated member and a second illuminated member are arranged side by side, a first light source that supplies first illumination light to the first illuminated member, A second light source for supplying second illumination light to the second illuminated member, a first illumination space for guiding the first illumination light to the first illuminated member, and the second a case body and a second illumination space for guiding illumination light to the second illuminated member and the first lighting space portion and the second partition wall separating the illumination space of the first 1, a front panel disposed on the viewer side of the second illuminated member, and an optical member provided between the case body and the first and second illuminated members, the front panel comprising: The first opening window for facing the first illuminated member and the second opening window for facing the second illuminated member There has a structure provided on the light transparent substrate, the optical member, the first and region provided so as to correspond to the first illumination space, corresponding to the second illumination space A second region provided so as to have a partitioning long hole that partitions the first region and the second region and in which a positioning convex portion provided on the partition wall is positioned and fixed. The positioning convex part is covered with a black ground color part formed on the substrate .

  In the invention, it is preferable that the optical member is a diffusion member or a prism sheet.

  According to the present invention, the optical member is provided with a connecting portion that connects the first region and the second region adjacent to the long slot for partitioning.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can achieve an initial objective and can suppress a cost rise can be provided.

The front view of the illuminating device by embodiment of this invention. AA sectional drawing of FIG. The front view of the diffusion member by the embodiment.

  Hereinafter, based on FIGS. 1-3, one Embodiment which applied this invention to the illuminating device for illuminating two to-be-illuminated members mounted in the meter for vehicles is described.

  1 and 2, the illumination device according to the present embodiment includes a first display element 10 as a first illuminated member, a second display element 20 as a second illuminated member, and each display element. 10 and 20 on the front side (viewer side), the first light source 40 for supplying the first illumination light L1 to the first display element 10, and the second display element 20. The second light source 50 that supplies the second illumination light L2, the circuit board 60 on which the first light source 40 and the second light source 50 are mounted (arranged), the circuit board 60, the first and first A case body 70 positioned between the two display elements 10 and 20, and a diffusion member (optical member) 80 provided between the case body 70 and the first and second display elements 10 and 20. In this case, the first display element 10 and the second display element 20 are arranged in parallel vertically. It is assumed to be mounted on the instrument for a vehicle with an analog meter tachometer or the like (not shown).

  The first display element 10 is composed of a liquid crystal display panel, for example, and based on detection signals (electrical signals) from various sensors (not shown), predetermined vehicle information (here, vehicle speed information indicating the traveling speed of the vehicle) is used. Information is displayed by a plurality of display segments (not shown).

  The second display element 20 is formed of, for example, a liquid crystal display panel, and based on the detection signal, other vehicle information different from the predetermined vehicle information (here, travel distance information indicating a travel distance of the vehicle) is used. Information is displayed by a plurality of display segments (not shown).

  The front panel 30 exposes the first rectangular opening window 32 and the second display element 20 for allowing the first display element 10 to face a light-transmitting substrate 31 formed in a thin plate shape. Therefore, a substantially rectangular second opening window portion 33 is provided, and a ground color portion 34 made of, for example, a black printing layer is printed on the back surface of the substrate 31.

  A viewer who visually recognizes the lighting device can visually recognize the predetermined vehicle information through the first opening window 32 and can visually recognize the other vehicle information through the second opening window 33. .

  The first light source 40 is composed of, for example, a chip-type light emitting diode that emits orange first illumination light L <b> 1. The first light source 40 is mounted on the circuit board 60 on the back side of the first display element 10, and the first display element 10. Is a light emitter that supplies the first illumination light L1.

  The second light source 50 is composed of, for example, a chip-type light emitting diode that emits white second illumination light L 2, and is mounted on the circuit board 60 on the back side of the second display element 20. Is a light emitter that supplies the second illumination light L2.

  The circuit board 60 is made of a hard wiring board in which a wiring pattern (not shown) is applied to a glass epoxy base material, for example, and is a microcomputer that performs display control of the first display element 10 and the second display element 20. A control unit (not shown), a first light source 40, a second light source 50, and various circuit components (not shown) such as resistors and capacitors are electrically connected to the wiring pattern.

  The case body 70 is formed of, for example, a white synthetic resin material, and includes a first illumination space S1 including a hollow region for guiding the first illumination light L1 to the first display element 10, and a second illumination light. And a second illumination space S2 formed of a hollow region for guiding L2 to the second display element 20.

  In FIG. 2, reference numeral 71 denotes a partition wall having a standing wall shape located at a boundary portion between the first illumination space portion S <b> 1 and the second illumination space portion S <b> 2, and the partition wall 71 provided in the case body 70. Is provided for partitioning (partitioning) the first illumination space part S1 and the second illumination space part S2, and the distal end thereof is provided with a partitioning long hole to be described later provided in the diffusion member 80. Positioning convex portions 71a to be positioned and fixed are formed.

  Moreover, when the color tone of the 1st illumination light L1 supplied to the 1st display element 10 differs from the color tone of the 2nd illumination light L2 supplied to the 2nd display element 20 like this example, the partition wall 71 The first illumination light L1 introduced into the first illumination space S1 is prevented from entering the second illumination space S2 adjacent to the first illumination space S1. Similarly, the first illumination space portion S1 in which the second illumination light L2 introduced into the second illumination space portion S2 is adjacent to the second illumination space portion S2 by providing the partition wall 71 in the same manner. Since the intrusion to the side is suppressed, the color of the first illumination light L1 supplied to the first display element 10 and the second illumination light L2 supplied to the second display element 20 may be mixed. There is a merit that there is no.

  In the case of this example, the first illumination space S1 has a standing wall shape positioned between the circuit board 60 and the diffusion member 80 so as to surround the partition wall 71 and the first light source 40 described above. The partition wall 71 and the first wall portion 72 hold the diffusion member 80 and the first display element 10 placed on the diffusion member 80. doing.

  Similarly, the second illumination space portion S <b> 2 is a second wall having a standing wall shape that is located between the circuit board 60 and the diffusion member 80 so as to surround the partition wall 71 and the second light source 50. The partition wall 71 and the second wall portion 73 hold the diffusion member 80 and the second display element 20 placed on the diffusion member 80.

  In addition, the opening width of each illumination space part S1 and S2 is each illumination space part used as the lower end side opening of each illumination space part S1 and S2 used as the 1st, 2nd light sources 40 and 50 side, and the diffusion member 80 side. The upper end side openings of S1 and S2 have substantially the same opening width. For example, the partition wall 71 and the first opening are set so that the width of the lower end side opening is narrower than the width of the upper end side opening. The shape of the second wall portions 72 and 73 may be an inclined wall shape instead of a standing wall shape.

  The diffusing member 80 is composed of a single light diffusing plate formed of, for example, a substantially flat light-transmitting synthetic resin having milky white color, and is behind the first and second display elements 10 and 20 (the viewer side and the viewer side). Is arranged on the opposite side.

  The diffusion member 80 has a substantially rectangular first diffusion portion 81 provided so as to correspond to the first illumination space portion S1, and a substantially rectangular shape provided so as to correspond to the second illumination space portion S2. It has the 2nd spreading | diffusion part 82 and the slotting slot 83 which consists of a slit (long hole shape) for partitioning (dividing) the 1st spreading | diffusion part 81 and the 2nd spreading | diffusion part 82. FIG.

  The first diffusion portion 81 is disposed along the back surface of the first display element 10 so as to close the upper end side opening of the first illumination space portion S1, and is for making the first illumination light L1 substantially uniform. It has a function as a light diffusing member, and the substantially uniform first illumination light L1 is guided to the first display element 10 side. The first diffusion portion 81 corresponds to a first region in the scope of claims described later.

  The second diffusion part 82 is disposed along the back surface of the second display element 20 so as to close the upper end side opening of the second illumination space part S2, and is for making the second illumination light L2 substantially uniform. It has a function as a light diffusion member, and the substantially uniform second illumination light L2 is guided to the second display element 20 side. The second diffusion portion 82 corresponds to a second region in the scope of claims described later. In addition, it is desirable that the plate thickness of the second diffusion portion 82 is substantially the same as the plate thickness of the first diffusion portion 81, but if necessary, the plate thickness of the second diffusion portion 82 is changed to the first diffusion portion. It may be different from the plate thickness of 81.

  The partitioning long hole 83 is formed so that the opening width thereof is slightly larger than the outer shape of the positioning convex portion 71a. In this case, it is only necessary to divide the first diffusion portion 81 and the second diffusion portion 82 from each other. In addition, the positioning projection 71a provided on the partition wall 71 also functions as a positioning hole for positioning and fixing. That is, this means that the diffusing member 80 and the case body 70 are positioned and fixed by positioning and fixing the positioning convex portion 71a by the partitioning long hole 83 which is a positioning hole.

  Further, the diffusion member 80 is provided with a pair of connecting portions 84 adjacent to the partitioning long holes 83 for connecting (connecting) the first diffusion portion 81 and the second diffusion portion 82. The diffusing member 80 can be configured as a single light diffusing plate.

  As described above, in the present embodiment, the first illumination space S1 for guiding the first illumination light L1 to the first display element 11 and the second illumination light S2 are guided to the second display element 12. A case body 70 having a partition wall 71 for partitioning the second illumination space portion S2, the first illumination space portion S1 and the second illumination space portion S2, and the case body 70 and the first and second display elements. 10 and 20, and the diffusing member 80 includes a first diffusing portion 81 provided so as to correspond to the first illumination space portion S <b> 1 and a second illumination space portion S <b> 2. And a partitioning long hole 83 for partitioning the first diffusion part 81 and the second diffusion part 82. Further, the diffusion member 80 is provided with a connecting portion 84 that connects the first diffusion portion 81 and the second diffusion portion 82 adjacent to the partitioning slot 83.

  Therefore, the first diffusing portion 81, the second diffusing portion 82, and the connecting portion 84 constitute a diffusing member 80, which is a single light diffusing plate, and the first display elements (first covered elements) arranged side by side. The illuminating member) 10 and the second display element (second illuminated member) 20 can be illuminated using the diffusing member 80, and a light diffusing plate for diffusing light as in the prior art is used as the display element. Since it is not necessary to provide each (illuminated member) individually (that is, a plurality of members), the number of parts constituting the illumination device can be reduced, and an increase in cost can be suppressed.

  In the present embodiment, the example in which the single diffusing member 80 is provided between the case body 70 and the display elements 10 and 20 has been described. However, instead of the diffusing member 80, for example, a (single) prism sheet is used. Even if it is adopted, the same effect as the above embodiment can be obtained. For example, as the prism sheet, a brightness increasing film in which prism rows having a triangular cross section are formed at regular intervals can be used. For example, the prism row is provided on the surface facing the display elements 10 and 20 side.

10 1st display element (1st to-be-illuminated member)
20 Second display element (second illuminated member)
DESCRIPTION OF SYMBOLS 30 Front panel 40 1st light source 50 2nd light source 60 Circuit board 70 Case body 71 Partition wall 71a Positioning convex part 72 1st wall part 73 2nd wall part 80 Diffusion member (optical member)
81 1st area | region (1st spreading | diffusion part)
82 2nd area | region (2nd spreading | diffusion part)
83 long hole for division 84 connection part L1 1st illumination light L2 2nd illumination light S1 1st illumination space part S2 2nd illumination space part

Claims (3)

In the lighting device in which the first illuminated member and the second illuminated member are arranged in parallel,
A first light source for supplying first illumination light to the first illuminated member;
A second light source for supplying second illumination light to the second illuminated member;
A first illumination space for guiding the first illumination light to the first illuminated member and a second illumination space for guiding the second illumination light to the second illuminated member; a case body having a partition wall separating the said first illumination space the second illumination space,
A front panel disposed on the viewer side of the first and second illuminated members;
An optical member provided between the case body and the first and second illuminated members,
In the front panel, a first opening window portion for facing the first illuminated member and a second opening window portion for facing the second illuminated member on a light-transmitting substrate It has a provided configuration,
The optical member includes a first region provided to correspond to the first illumination space portion, a second region provided to correspond to the second illumination space portion, and the first region. And a partitioning long hole for positioning and fixing a positioning convex portion provided on the partition wall .
The illuminating device , wherein the positioning convex portion is covered with a black ground color portion formed on the substrate . The illumination device according to claim 1, wherein the optical member is a diffusion member or a prism sheet. The connection part which connects the said 1st area | region and the said 2nd area | region is provided in the said optical member adjacent to the said slot for division, The Claim 1 or Claim 2 characterized by the above-mentioned. Lighting equipment.

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