JP2018180240A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of suppressing overlapping of display.SOLUTION: The display device includes a first light-emitting part 2 which emits first light, a second light-emitting part 3 which emits second light different from the first light, a half mirror 4 as a semi-transmissive reflective part which reflects light made incident on a first surface 4a and transmits the light made incident on a second surface 4b, a first mark forming part 5 which forms a first mark 51 by the first light from the first light-emitting part 2 toward the first surface 4a of the half mirror 4, a second mark forming part 6 which forms a second mark 61 by the second light from the second light-emitting part 3 toward the second surface 4b of the half mirror 4, and a control part 7 which controls a light emission state in the first light-emitting part 2 and the second light-emitting part 3. The first mark forming part 5 and the second mark forming part 6 include recess parts 5a and 6a matched with the modes of the marks 51 and 52 respectively and light-shielding parts 5b and 6b in which parts except the recess parts 5a and 6a are shielded respectively.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device.

  BACKGROUND Conventionally, a display device having a display switching function of switching and displaying different marks and the like is known. As such a display apparatus, there exists a thing of patent document 1, for example.

  The display device described in Patent Document 1 includes a liquid crystal display, a velocity meter illuminated by a light emitting diode (LED), and a half mirror that reflects light from the liquid crystal display and transmits the display of the velocity meter. . In this display device, when the liquid crystal display is displayed, the liquid crystal display is displayed by the reflection of the half mirror, and when the LED is lit, the speedometer is displayed by transmitting through the half mirror.

JP, 2000-6686, A

  In the display device of Patent Document 1, even if the LED is not lit, when the liquid crystal display is displayed, the light from the liquid crystal display causes the speedometer to be projected on the half mirror, and the display overlaps and the appearance is deteriorated. There was a possibility of

  Then, an object of this invention is to provide the display apparatus which can suppress the overlap of a display.

  In order to solve the above problems, the present invention is directed to a first light emitting unit that emits a first light, a second light emitting unit that emits a second light different from the first light, and a first surface A semi-transmissive reflective portion that reflects incident light and transmits light incident on the second surface; and a first light directed from the first light emitting portion to the first surface of the semi-transmissive reflective portion; A first mark forming portion forming a first mark; and a second mark forming portion forming a second mark by the second light traveling from the second light emitting portion to the second surface of the semitransparent reflecting portion; A control unit configured to control a light emission state of the first light emitting unit and the second light emitting unit, wherein each of the first mark forming unit and the second mark forming unit is a recess corresponding to a form of the mark; The display apparatus is provided with the light-shielding part by which parts other than the said recessed part were shielded.

  According to the present invention, it is possible to provide a display device capable of suppressing overlapping of displays.

1 is a cross-sectional view of a switch device to which a display device according to an embodiment of the present invention is applied. It is a schematic diagram which shows a 1st mark formation part. It is a figure explaining the laminated structure of a 2nd mark formation part and a half mirror. It is a figure explaining the display at the time of making a 1st light emission part light, (a) is sectional drawing, (b) is a top view. It is a figure explaining the display at the time of making a 2nd light emission part light, (a) is sectional drawing, (b) is a top view. It is a figure explaining the display at the time of making 1st light emission part and 2nd light emission part non-lighting, (a) is sectional drawing, (b) is a top view.

Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

  As shown in FIG. 1, the display device 1 according to the present embodiment has a display switching function of switching and displaying different marks and the like. Here, the case where the display device 1 is applied to the switch device 10 will be described. The switch device 10 is mounted on, for example, a vehicle and is used to operate a car audio system, a navigation system, and the like.

  The switch device 10 has a lever 11 at its central portion, and is configured to be able to detect that the lever 11 has been moved in four directions, front and rear, left and right (see FIG. 4B). The mechanism for detecting the movement of the lever 11 is not particularly limited. For example, the movement of the lever 11 can be detected by detecting the contact between the contact point provided on the lever 11 and the contact point provided on a fixing member such as a case or a substrate that does not move along with the movement of the lever 11. In addition, the specific structure of the switch apparatus 10 is not limited to the thing of illustration, For example, the rotation switch which a lever part rotates may be used. Further, the display device 1 may be applied to devices other than the switch device 10.

  The display device 1 includes a first light emitting unit 2, a second light emitting unit 3, a half mirror 4 as a semitransparent reflecting unit, a first mark forming unit 5, a second mark forming unit 6, and a control unit 7. ,have.

  The first light emitting unit 2 emits a first light. The second light emitting unit 3 emits a second light different from the first light. In the present embodiment, light emitting diodes are used as the first light emitting unit 2 and the second light emitting unit 3. Further, in the present embodiment, the emission colors of the first light emitting unit 2 and the second light emitting unit 3 are made different. Here, the emission color of the first light emitting unit 2 is green, and the emission color of the second light emitting unit 3 is white. By making the light emission colors of the first light emitting unit 2 and the second light emitting unit 3 different from each other, a user (for example, a driver of a vehicle) can quickly know the current usage mode of the switch device 10.

  The first light emitting unit 2 and the second light emitting unit 3 are mounted on a common substrate 8. In the switch device 10, a case 12 having a light shielding property is provided so as to surround the mounting positions of the light emitting units 2 and 3 of the substrate 8. The case 12 has an opening 12a at its upper part, and a lever 11 is provided so as to protrude outward of the case 12 from the opening 12a. A light receiving component 13 is provided to close the opening 12 a around the lever 11. The detailed structure of the lever 11 and the light receiving part 13 will be described later.

  The first light emitting unit 2 is provided immediately below the lever 11. In addition, a plurality of second light emitting units 3 are provided to surround the first light emitting unit 2. The second light emitting unit 3 is provided to face the lower surface (the surface on the substrate 8 side) of the light receiving component 13. Here, four second light emitting units 3 are used in order to display four second marks 61 when the second light emitting unit 3 is lit, but the number of second light emitting units 3 is not particularly limited. Further, although only one first light emitting unit 2 is used here, a plurality of first light emitting units 2 may be used.

  Hereinafter, in order to simplify the description, the vertical direction in FIG. 1 is referred to as the vertical direction, and the direction perpendicular to the vertical direction is referred to as the horizontal direction. Also, the upper direction in FIG. 1 may be referred to as the upper direction, and the lower direction as the lower direction. However, these directions do not limit the directions of the switch device 10 in use.

  The half mirror 4 reflects light incident on the first surface 4 a and transmits light incident on the second surface 4 b. In the present embodiment, the half mirror 4 is provided on the light receiving component 13 in a state of being inclined 45 degrees with respect to the vertical direction and the horizontal direction.

  The first mark forming unit 5 forms a first mark 51 (see FIG. 4B) with the first light directed from the first light emitting unit 2 to the first surface 4 a of the half mirror 4. In FIG. 1, the path of the first light is indicated by a solid arrow 2a.

  As shown in FIG. 1 and FIG. 2, in the present embodiment, the first mark forming portion 5 is formed on the surface of the lever 11. The lever 11 is made of a transparent material such as an acrylic resin that transmits the first light, and plays a role as a light guide that guides the first light to the half mirror 4. The first light incident on the lever 11 reaches from the base end of the lever 11 (end on the substrate 8 side) to the tip of the lever 11 and is redirected by the tip of the lever 11 by reflection, scattering or the like, The light is emitted in the horizontal direction which is a direction perpendicular to the optical axis of the first light emitting unit 2.

  The first mark forming portion 5 is formed on the side surface of the light emitting portion of the first light in the lever 11, that is, the tip portion of the lever 11. The first mark forming portion 5 is formed on the side surface of the lever 11 facing the first surface 4 a of the half mirror 4.

  The first mark forming portion 5 includes a concave portion 5a conforming to the aspect of the first mark 51, and a light shielding portion 5b in which a portion other than the concave portion 5a is shielded. The first mark forming unit 5 applies, for example, a black coating to the surface of the lever 11, removes a part of the coating by laser processing or the like, and forms a recess 5a that matches the first mark 51. You may form by making the part into the light-shielding part 5b.

  The second mark forming unit 6 forms a second mark 61 (see FIG. 5B) by the second light directed from the second light emitting unit 3 to the second surface 4 b of the half mirror 4. In FIG. 1, the path of the second light is indicated by a broken arrow 3a.

  As shown in FIGS. 1 and 3, in the present embodiment, the second mark forming unit 6 is provided in the light receiving component 13. The light receiving component 13 is made of a transparent material such as an acrylic resin that transmits the second light, and plays a role as a base on which the second mark forming portion 6 and the half mirror 4 are formed. The light receiving component 13 has a tapered portion 13a whose opening width becomes narrower toward the lower side (closer to the substrate 8). A through hole 13 b is formed at an end of the tapered portion 13 a on the substrate 8 side, and the lever 11 is inserted through the through hole 13 b.

  The second mark forming portion 6 is formed on the mark layer 62 formed on the surface of the tapered portion 13a of the light receiving part 13 (the surface opposite to the substrate 8), and transmits the second light. And a clear layer 63 made of a transparent resin. The half mirror 4 is formed of a metal layer formed on the clear layer 63 by vapor deposition or the like. On the half mirror 4, a protective layer (second clear layer) 9 for protecting the half mirror 4 is provided. The protective layer 9 may be made of a transparent resin that transmits the first light and the second light.

  The mark layer 62 has a concave portion 6 a conforming to the aspect of the second mark 61 and a light shielding portion 6 b in which a portion other than the concave portion 6 a is shielded. In the mark layer 62, for example, a black coating is applied to the surface of the tapered portion 13a, and a part of the coating is removed by laser processing or the like to form a recess 6a that matches the second mark 61. The light shielding portion 6b is formed.

  The clear layer 63 is used to fill the recess 6 a and obtain a flat surface to be a base of the half mirror 4. In FIG. 1, the clear layer 63 is omitted. Further, in FIG. 1, in order to facilitate the description, the thicknesses of the protective layer 9, the half mirror 4, the mark layer 62, and the first mark forming portion 5 are shown thicker than the actual thickness.

  The control unit 7 controls the light emission state of the first light emitting unit 2 and the second light emitting unit 3. The control unit 7 causes the first light emitting unit 2 to emit light and the second light emitting unit 3 not to emit light according to the light emission switching condition set in advance, and the first light emitting unit 2 does not emit light and the second light emission The second light emission state in which the unit 3 emits light and the non-lighting state in which both the light emission units 2 and 3 do not emit light are switched. The light emission switching condition is not particularly limited, and can be appropriately set according to the application, such as switching according to the state of the device controlled by the switch device 10 or switching with a separately provided switching switch.

  As shown in FIGS. 4A and 4B, when the first light emitting portion 2 emits light and the second light emitting portion 3 does not emit light in the first light emitting state, the first light emitting portion 2 from the first light emitting portion 2 does not emit light. The light passes through the inside of the lever 11 to reach the first mark forming portion 5, and the first light passing through the recess 5 a is reflected by the first surface 4 a of the half mirror 4, and the first mark 51 is displayed. At this time, even if a part of the first light passes through the half mirror 4, the second mark forming portion 6 is composed of the recess 6a and the light shielding portion 6b. Can be suppressed.

  As shown in FIGS. 5A and 5B, when the second light emitting state in which the second light emitting portion 3 is made to emit light without causing the first light emitting portion 2 to emit light, the second light emitting portion 3 Of light passes through the light receiving component 13 to the mark layer 62 of the second mark forming portion 6, and the second light passing through the recess 6a is transmitted through the second surface 4b of the half mirror 4 (in the half mirror 4 And the second mark 61 is displayed. At this time, since the first mark forming portion 5 includes the concave portion 5 a and the light shielding portion 5 b, it is possible to suppress the display of the first mark 51 by a part of the second light transmitted through the half mirror 4.

  As shown in FIGS. 6A and 6B, in the non-lighting state in which both the light emitting parts 2 and 3 are not made to emit light, the light does not pass through both the mark forming parts 5 and 6, so that no display is made. In the illustrated example, it is shown that there is a gap around the lever 11, but actually, a light shielding member is provided to fill the gap around the lever 11, or the gap is made smaller. As a result, light from the outside is prevented from entering the case 12, and display of the marks 51 and 61 by light from the outside is suppressed.

(Operation and effect of the embodiment)
As described above, the display device 1 according to the present embodiment is a device that switches the display using the half mirror 4 and includes a mark forming portion 5 along a path from both the light emitting portions 2 and 3 to the half mirror 4. 6 are provided, and each of the two mark forming portions 5 and 6 is provided with concave portions 5a and 6a corresponding to the form of the marks 51 and 61 to be displayed, and light shielding portions 5b and 6b in which portions other than the concave portions 5a and 6a are shielded And.

  By configuring in this manner, the portions other than the concave portions 5a and 6a in the mark forming portions 5 and 6 are shielded from light, thereby reducing the display of unnecessary marks and suppressing the overlapping of the display. It becomes possible to improve the appearance. In addition, since the display is switched by turning on and off the light emitting units 2 and 3, switching control of the display is easy, which contributes to cost reduction.

  As mentioned above, although embodiment and the modification of this invention were described, these embodiment and the modification are only an example, and do not limit the invention which concerns on a claim. These novel embodiments and modifications can be implemented in other various forms, and various omissions, replacements, changes and the like can be made without departing from the scope of the present invention. Further, all combinations of the features described in the embodiments and the modifications are not necessarily essential to the means for solving the problems of the invention. Furthermore, these embodiments and modifications are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 1 ... Display apparatus, 2 ... 1st light emission part, 3 ... 2nd light emission part, 4 ... Half mirror (semi-transmissive reflection part) 4a ... 1st surface, 4b ... 2nd surface, 5 ... 1st mark formation 5a: recessed portion 5b: light shielding portion 51: first mark 6: second mark forming portion 6a: recessed portion 6b: light shielding portion 61: second mark 62: mark layer 63: clear layer Reference Signs List 7 control unit 8 substrate 9 protective layer 10 switch device 11 lever (light guide unit) 12 case 12a opening 12 light receiving component (base material) 13a tapered portion 13b ... through hole

Claims (3)

A first light emitting unit that emits a first light;
A second light emitting unit that emits a second light different from the first light;
A semi-transmissive reflective portion that reflects light incident on the first surface and transmits light incident on the second surface;
A first mark forming portion for forming a first mark by the first light traveling from the first light emitting portion to the first surface of the semitransparent reflecting portion;
A second mark forming portion for forming a second mark by the second light traveling from the second light emitting portion to the second surface of the semitransparent reflecting portion;
A control unit configured to control a light emission state of the first light emitting unit and the second light emitting unit;
Each of the first mark forming unit and the second mark forming unit is
A recess corresponding to the aspect of the mark,
A light shielding portion in which a portion other than the concave portion is shielded;
Display device. The second mark forming portion is formed on a substrate that transmits the second light, and includes a mark layer having the recess and the light shielding portion, and is formed on the mark layer and transmits the second light. Having a clear layer,
The semi-transmissive reflective portion includes a metal layer formed on the clear layer.
The display device according to claim 1. A light guiding unit configured to emit the first light incident from the first light emitting unit in a direction perpendicular to an optical axis of the first light emitting unit;
The first mark forming unit is provided on the light emitting unit of the first light of the light guiding unit so as to face the first surface of the semitransparent reflecting unit.
The display device according to claim 1.

Images