JP2017174645A - Lighting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting structure that can be made compact easily.SOLUTION: A lighting structure 21 comprises: a visible light source 12 for lighting a base material from a rear surface 201 with visible light 120; an invisible light source 14 for lighting the base material from the rear surface 201 with invisible light 140; a coating film 26 provided on a surface 200 of the base material, and having a conversion region 260 for converting the invisible light 140 into visible light 141, and a first transmission region 261 for transmitting the visible light 120; and a light shielding film 28 provided on the coating film 26, and having a light shielding region 280 for shielding the visible light 120 and the visible light 141, and a second transmission region 281 where at least part of the first transmission region 261 and the conversion region 260 are located below, and transmitting the visible light 141.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an illumination structure.

  As a conventional technique, there is known an operation panel having a diffusing member that illuminates the side surface on the mark side of the operation knob by diffusing the remaining part of the light and displaying the mark by being transmitted and illuminated by a part of the light emitted from the light source. (For example, refer to Patent Document 1).

  Furthermore, a light emitting diode is provided behind the operation knob to notify that the operation is being performed. When the operation knob is operated, the operation is performed via a light guide member provided at the center of the operation knob. The central part of the knob is lit.

JP 2007-66664 A

  As described above, in the conventional operation panel, the side surface of the operation knob is illuminated so that the mark is not mistaken for a switch, and when the operation knob is operated, the central portion of the operation knob is lit. The conventional operation panel has many parts for performing these two illuminations, and it is difficult to reduce the size.

  Accordingly, an object of the present invention is to provide an illumination structure that can be easily reduced in size.

  One embodiment of the present invention includes a visible light source that illuminates a substrate from the back surface with first visible light, an invisible light source that illuminates the substrate from the back surface with invisible light, and a surface of the substrate. A conversion film having a conversion region for converting the visible light into two and a first transmission region for transmitting the first visible light; and a first conversion region provided on the conversion film to block the first visible light and the second visible light. There is provided an illumination structure including a light shielding region, and a light shielding film having a first transmission region and a second transmission region in which at least a part of the first transmission region and the conversion region are located below and transmits the second visible light. .

  According to the present invention, the size can be easily reduced.

FIG. 1A is a schematic diagram illustrating an example of an arrangement of a switch device that employs the illumination structure according to the first embodiment, and FIG. 1B is an example of a block diagram of the switch device. Fig.2 (a) is an enlarged view which shows an example of the switch knob of the switch apparatus which employ | adopted the illumination structure which concerns on 1st Embodiment, FIG.2 (b) is FIG.2 (b) of a switch knob. It is an example of the cross-sectional view which looked at the cross section cut | disconnected by the II (b) -II (b) line | wire from the arrow direction. FIG. 3 is a cross-sectional view of a main part of a switch device employing the illumination structure according to the second embodiment.

(Summary of embodiment)
The illumination structure according to the embodiment includes a visible light source that illuminates the substrate from the back surface with first visible light, an invisible light source that illuminates the substrate from the back surface with invisible light, and a surface of the substrate that is invisible light. A conversion region that converts the first visible light into a second visible light, a conversion film having a first transmission region that transmits the first visible light, and a first visible light and a second visible light that are provided on the conversion film. A light-shielding region that shields light, and a light-shielding film having a second transmissive region that transmits the second visible light and at least a part of the first transmissive region and the conversion region are located below. ing.

  Since this illumination structure can be performed by combining the illumination by the first visible light and the illumination by the second visible light by the combination of the conversion film and the light shielding film, compared with the case where this configuration is not adopted, There is no need to provide a light guide or the like according to the illumination, and the size can be easily reduced.

[First embodiment]
(Overview of switch device 1)
FIG. 1A is a schematic diagram illustrating an example of an arrangement of a switch device that employs the illumination structure according to the first embodiment, and FIG. 1B is an example of a block diagram of the switch device. Fig.2 (a) is an enlarged view which shows an example of the switch knob of the switch apparatus which employ | adopted the illumination structure which concerns on 1st Embodiment, FIG.2 (b) is FIG.2 (b) of a switch knob. It is an example of the cross-sectional view which looked at the cross section cut | disconnected by the II (b) -II (b) line | wire from the arrow direction. Note that, in each drawing according to the embodiment described below, the ratio between figures may be different from the actual ratio. In FIG. 1B, the main signal flow is indicated by arrows. Furthermore, “A to B” indicating a numerical range is used in the meaning of A or more and B or less.

  The switch device 1 having the illumination structure 21 is arranged as a push button switch of an air conditioner 5 mounted on a vehicle, for example, as shown in FIG. The air conditioner 5 includes, for example, a display unit 50, a symbol 52, and a switch group 54.

  The display unit 50 is, for example, a liquid crystal monitor, and displays a set temperature, an air volume, and the like that are set. The symbol 52 indicates a function executed by operating the switch device 1. The switch group 54 includes a plurality of switch devices 1. The switch device 1 is installed corresponding to the symbol 52.

  As shown in FIGS. 2A and 2B, the illumination structure 21 is based on a visible light source 12 that illuminates the substrate from the back surface 201 with first visible light (visible light 120) and an invisible light 140. An invisible light source 14 that illuminates the material from the back surface 201, a conversion region 260 that is provided on the surface 200 of the base material and converts the invisible light 140 into second visible light (visible light 141), and a first that transmits the visible light 120. A coating film 26 as a conversion film having one transmission region 261, a light shielding region 280 that is provided on the coating film 26 and shields the visible light 120 and the visible light 141, and the first transmission region 261 and the conversion region 260. A light shielding film 28 having a second transmission region 281 that is at least partially located below and transmits visible light 141.

  The first transmission region 261 of the present embodiment is an opening 262 as shown in FIG. Further, the second transmission region 281 of this embodiment is an opening 282. This opening 282 is the illumination opening 30 of the switch knob 20 shown in FIG. In the present embodiment, the entire first transmission region 261 is exposed in the illumination opening 30, but the present invention is not limited to this and may be a part. In the present embodiment, the coating film 26 is provided below the light shielding film 28, but the present invention is not limited to this, and the coating film 26 may be provided only in the illumination opening 30.

  The base material is, for example, the switch knob 20. As shown in FIG. 2A, the switch knob 20 is provided with a lens 24 that collects the visible light 120 and the invisible light 140.

  The switch device 1 includes a switch 32 that is turned on by a push operation on the switch knob 20 and a control unit 34, for example, as shown in FIG.

(Configuration of visible light source 12)
The visible light source 12 is disposed on the substrate 10 along with the invisible light source 14 as shown in FIG. The substrate 10 is, for example, a printed wiring board.

As an example, the visible light source 12 outputs visible light 120 having a wavelength of 400 to 830 nm based on the drive signal S ₁ output from the control unit 34. The visible light source 12 is, for example, an LED (Light Emitting Diode) element that outputs the visible light 120. The visible light 120 is output from the first transmission region 261 of the coating film 26 via the lens 24.

  The visible light source 12 is configured to light up when a push operation is performed on the switch knob 20 and a corresponding function is turned on. The visible light 120 has a different color from the visible light 141 obtained by converting the invisible light 140.

(Configuration of invisible light source 14)
As shown in FIG. 2B, the invisible light source 14 is arranged on the substrate 10 along with the visible light source 12. As an example, the invisible light source 14 outputs invisible light 140 having a wavelength of 10 nm or more and less than 400 nm based on the drive signal S ₂ output from the control unit 34. The invisible light 140 of the present embodiment is, for example, near-ultraviolet light (black light) having a wavelength of about 365 nm.

  The invisible light source 14 is, for example, an LED element that outputs the invisible light 140. The invisible light 140 is output from the first transmission region 261 of the coating film 26 through the lens 24, but is not visible to the passenger because it is invisible light. However, a part of the invisible light 140 is converted into visible light 141 by the coating film 26 and is output from the second transmission region 281 and visually recognized by the occupant.

  The invisible light source 14 is configured to light up when the vehicle is turned on, for example. When the invisible light source 14 is turned on, the switch knob 20 shines in the second transmission region 281 that is the inner periphery of the illumination opening 30 and is visually recognized by the passenger. The occupant can recognize that the symbol 52 is not the object of the push operation by lighting the second transmission region 281.

  Note that the combination of illumination is not limited to the above combination, and the roles of the visible light source 12 and the invisible light source 14 may be reversed. When a push operation is accepted, one of the light sources that has been turned on until then is displayed. The light source may be turned off and the other light source may be turned on.

(Configuration of switch knob 20)
For example, as shown in FIG. 1A, the switch knob 20 has an elongated shape with a narrow vertical width. The switch knob 20 is made of, for example, a transparent synthetic resin such as polycarbonate that transmits visible light 120 and invisible light 140.

  For example, as shown in FIG. 2B, the switch knob 20 is provided with a lens 24 corresponding to the illumination opening 30. The lens 24 is configured to collect visible light 120 and invisible light 140 input from the back surface 201 and guide them in the direction of the illumination opening 30. Since the switch knob 20 is provided with the lens 24, the switch knob 20 may be formed of an opaque synthetic resin or metal.

  A switch 32 is disposed on the rear surface 201 side of the switch knob 20. When the switch knob 20 is pushed, the switch 32 is depressed to turn on.

  The lens 24 has an elongated shape corresponding to the illumination opening 30 with a transparent synthetic resin such as PMMA (polymethylmethacrylate) different from the switch knob 20. That is, it is desirable that substantially total reflection occurs at the boundary between the lens 24 and the switch knob 20 due to the difference in refractive index. The lens 24 has a shape in which the width on the back surface 201 side is wider than that on the front surface 200 side in the cross-sectional view shown in FIG.

(Configuration of coating film 26)
The coating film 26 is formed on at least the surface 200 of the switch knob 20 by a printing method or the like. The coating film 26 is configured to convert the input invisible light 140 that cannot be seen into visible light 141 that can be seen.

  The coating film 26 is a film containing a phosphor such as YAG (yttrium, aluminum, garnet), TAG (terbium, aluminum, garnet), sialon, or BOS (barium orthosilicate). Examples of the phosphor according to the present embodiment include strontium fluoroborate doped with europium and barium silicide doped with lead.

  The coating film 26 is formed on the surface 200 of the switch knob 20. In the coating film 26, an opening 262 that is the center of the illumination opening 30 and through which the visible light 120 is transmitted is formed.

  This opening 262 transmits the visible light 120 and forms a first transmission region 261 surrounded by a dotted line shown in FIG. The first transmission region 261 has a shape in which the illumination opening 30 is reduced.

(Configuration of light shielding film 28)
For example, as shown in FIG. 2B, the light shielding film 28 is formed on the surface 200 side and the side surface 203 of the switch knob 20. The light shielding film 28 is a black film formed by, for example, a printing method. The light shielding film 28 shields the visible light 120 and the visible light 141.

  As a modification, the coating film 26 and the light shielding film 28 may be formed on the front surface and the back surface of the film and attached to the switch knob 20.

  The light shielding film 28 has an opening 282 corresponding to the illumination opening 30. In this opening 282, the opening 262 of the coating film 26 and the coating film 26 around the opening 262 are exposed. Visible light 141 is output from the exposed coating film 26, and a second transmission region 281 surrounded by a solid line and a dotted line shown in FIG. 2A is formed. The second transmissive region 281 surrounds the first transmissive region 261.

(Configuration of switch 32)
The switch 32 is disposed on the substrate 10, for example. The switch 32 is, for example, a micro switch that is turned on by being pushed by the switch knob 20 that is moved by a push operation. Switch 32 outputs the switching signal S ₃ to the control unit 34 in response to the push operation.

(Configuration of control unit 34)
The control unit 34 includes, for example, a CPU (Central Processing Unit) that performs operations and processing on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Microcomputer. In this ROM, for example, a program for operating the control unit 34 is stored. For example, the RAM is used as a storage area for temporarily storing calculation results and the like.

The control unit 34 is electrically connected to the visible light source 12, the invisible light source 14, and the switch 32, for example. Control unit 34, for example, when the power of the vehicle is turned on to light the invisible light source 14 generates a drive signal S _2.

The control unit 34 based on the switch signal S ₃ output from the switch 32, the switch knob 20 is determined to have been pushed, the operation with turning on the visible light source 12 generates a driving signals S ₁ signal S ₄ Is output to the air conditioner 5.

(Effects of the first embodiment)
The illumination structure 21 according to the present embodiment can be easily downsized. Specifically, the illumination structure 21 can be performed by combining the illumination with the visible light 120 and the illumination with the visible light 141 by the combination of the coating film 26 and the light shielding film 28, so that this configuration is not used. The light guide for guiding each light is not necessary, and the size can be easily reduced. Moreover, since the switch apparatus 1 employs the illumination structure 21, it can be easily downsized.

  The switch device 1 employs the illumination structure 21 so that the illumination of the invisible light source 14 for indicating the target of the push operation and the illumination of the visible light source 12 indicating that the push operation has been accepted are narrow in the switch knob 20. Can be done in a range.

  By adopting the illumination structure 21, the switch device 1 can make the inside of the operation surface 202 illuminate with two types of illumination instead of the side surface of the switch knob 20, so that the design is excellent.

[Second Embodiment]
The second embodiment is different from the first embodiment in that the first transmission region 261 and the second transmission region 281 are not openings.

  FIG. 3 is a cross-sectional view of a main part of a switch device employing the illumination structure according to the second embodiment. In the embodiments described below, parts having the same functions and configurations as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  As shown in FIG. 3, the illumination structure 21 of the present embodiment includes a visible light source 12 that illuminates the switch knob 20 from the back surface 201 with visible light 120 and an invisible light source that illuminates the switch knob 20 from the back surface 201 with invisible light 140. 14, a coating film 26 provided on the surface 200 of the switch knob 20, having a conversion region 260 that converts the invisible light 140 into visible light 141, and a first transmission region 261 that transmits the visible light 120, and the coating film 26 A second light-transmitting region that is provided on the light-blocking region 280 that blocks the visible light 120 and the visible light 141, and at least a part of the first transmission region 261 and the conversion region 260, and transmits the visible light 141. And a light shielding film 28 having a region 281.

  The first transmission region 261 and the second transmission region 281 are not openings but are configured by a member that transmits at least the visible light 120 and the visible light 141.

  In the coating film 26, for example, the conversion region 260 and the first transmission region 261 are formed by a printing method or the like. In the case of printing, the first transmission region 261 is formed by ink that transmits visible light 120. This ink may be colored.

  The coating film 26 may be formed by forming the conversion area 260 on the surface of a transparent film by printing or the like, and the first transmission area 261 may be configured as an area only for the film.

  In the light shielding film 28, for example, the light shielding region 280 and the second transmission region 281 are formed by a printing method or the like. In the case of printing, the second transmission region 281 is formed of ink that transmits the visible light 120 and the visible light 141. This ink may be colored.

  The light-shielding film 28 may be formed by forming a light-shielding region 280 on the surface of a transparent film by printing or the like, and the second transmission region 281 may be configured only for the film. The coating film 26 and the light shielding film 28 may be formed on the front surface and the back surface of the film.

  As a modification, only the second transmission region 281 may be an opening.

(Effect of the second embodiment)
The illumination structure 21 of the present embodiment has a good feeling of operation because there is no opening in the operation surface 202 of the switch knob 20.

  The illumination structure 21 is not limited to the switch knob 20 as a base material, and a panel or the like may be used as the base material. The switch device 1 is not limited to a push button switch, and may be a touch sensor or the like.

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

DESCRIPTION OF SYMBOLS 1 ... Switch apparatus, 5 ... Air conditioning apparatus, 10 ... Board | substrate, 12 ... Visible light source, 14 ... Invisible light source, 20 ... Switch knob, 21 ... Illumination structure, 24 ... Lens, 26 ... Coating film, 28 ... Light shielding film, 30 ... Illumination aperture, 32 ... switch, 34 ... control unit, 50 ... display unit, 52 ... symbol, 54 ... switch group, 120 ... visible light, 140 ... invisible light, 141 ... visible light, 200 ... front surface, 201 ... back surface, 202 ... operation surface, 203 ... side face, 260 ... conversion area, 261 ... first transmission area, 262 ... opening, 280 ... light-shielding area, 281 ... second transmission area, 282 ... opening

Claims (4)

A visible light source that illuminates the substrate from the back with first visible light;
An invisible light source that illuminates the substrate from the back surface with invisible light;
A conversion film provided on the surface of the substrate and having a conversion region for converting the invisible light into second visible light, and a first transmission region for transmitting the first visible light;
A light-shielding region that is provided on the conversion film and shields the first visible light and the second visible light; and at least a part of the first transmission region and the conversion region is located below; A light-shielding film having a second transmission region that transmits two visible lights;
Lighting structure with. The first transmission region and the second transmission region are openings;
The illumination structure according to claim 1. The second transmission region is formed around the first transmission region;
The illumination structure according to claim 1 or 2. The base material is a switch knob of a switch;
The illumination structure according to any one of claims 1 to 3.

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