CN114866083A - Switch with a switch body - Google Patents
Switch with a switch body Download PDFInfo
- Publication number
- CN114866083A CN114866083A CN202111008089.2A CN202111008089A CN114866083A CN 114866083 A CN114866083 A CN 114866083A CN 202111008089 A CN202111008089 A CN 202111008089A CN 114866083 A CN114866083 A CN 114866083A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- switch
- plate holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/9627—Optical touch switches
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/96042—Touch switches with illumination
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Planar Illumination Modules (AREA)
Abstract
The switch is provided with: a switch cover having a partition wall that partitions a first area that captures light from a first light-emitting portion and a second area that captures light from a second light-emitting portion that emits light independently of the first light-emitting portion; a first light guide plate which is arranged in the first region so as to be visible from the outside of the switch cover, and diffuses light incident from the first light emitting portion; a second light guide plate which is arranged in the second region so as to be visible from the outside of the switch cover, and diffuses light incident from the second light emitting portion; and a light guide plate holder connected to the switch cover, holding the first light guide plate and the second light guide plate between the light guide plate holder and the switch cover, and formed of a light-impermeable material.
Description
Technical Field
The present invention relates to a switch having a light guide plate.
Background
Conventionally, there has been proposed a dial switch capable of determining a rotational position of a rotary knob by using a pointer section (for example, patent document 1). In this technique, a turning knob has: a lens member as a pointer section which is elongated in the front-rear direction along the central axis direction of the rotary knob; a first cylindrical member that exposes the front portion of the lens member forward and laterally, has a notch portion on the circumferential surface for holding the lens member, and covers the inner circumferential surface of the lens member; and a second cylindrical member that is locked to the rear end portion of the first cylindrical member, covers the rear surface of the lens member, and protrudes rearward of the lens member.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2012 and 84242
Disclosure of Invention
Problems to be solved by the invention
When one of a plurality of light guide plates provided in one switch is turned on and the other is turned off, such as an indicator for indicating the open/closed state of the switch and another display unit that is always on, light from a light source may enter the light guide plate that is desired to be turned off. Accordingly, an object of the present invention is to provide a technique for suppressing light leakage in a case where a switch includes a plurality of light guide plates.
Means for solving the problems
The switch of the present invention comprises: a switch cover having a partition wall that partitions a first area that captures light from a first light-emitting portion and a second area that captures light from a second light-emitting portion that emits light independently of the first light-emitting portion; a first light guide plate disposed in the first region so as to be visible from outside the switch cover, the first light guide plate diffusing light incident from the first light emitting portion; a second light guide plate disposed in the second region so as to be visible from outside the switch cover, the second light guide plate diffusing light incident from the second light emitting unit; and a light guide plate holder connected to the switch cover, holding the first light guide plate and the second light guide plate between the light guide plate holder and the switch cover, and formed of a light-impermeable material.
Since the light guide plate holder can hold the light guide plate between the light guide plate holder and the switch cover, it is not necessary to provide, for example, an engaging portion in the light guide plate itself for connecting the light guide plate and the switch cover. Therefore, for example, light leakage from the engagement portion can be suppressed.
The partition wall may be a cylindrical wall surface having a through hole for connecting the light guide plate holder, and the light guide plate holder may have a claw portion inserted into the through hole and may cover the entire through hole in a state of being connected to the switch cover. Thus, even when the through hole is provided in the switch cover, light leakage from the through hole can be suppressed.
The claw portion may be configured to contact an edge of the through hole in an inclined manner so as to bias the light guide plate holder toward the switch cover. Thus, the light guide plate holder and the switch cover can be reliably connected, and the member can be prevented from rubbing when the switch is operated, thereby preventing the generation of abnormal noise.
The switch may further include a housing disposed on the substrate and having a cylindrical wall portion that partitions a first region in which the first light-emitting portion is disposed and a second region in which the second light-emitting portion is disposed, wherein the light guide plate holder includes a cylindrical portion extending toward the substrate side at the partition wall, and an end of the cylindrical portion of the light guide plate holder on the substrate side may be located closer to the substrate side than an end of the cylindrical wall portion of the housing on the opposite side of the substrate. Thus, even when light from the light emitting section is diffracted in the switch, light leakage between the first region and the second region can be suppressed.
The contents described in the solutions for solving the problems can be combined as much as possible without departing from the problems and the technical idea of the present invention.
Effects of the invention
According to the present invention, a technique for suppressing light leakage in the case where a switch includes a plurality of light guide plates can be provided.
Drawings
Fig. 1 is a front view showing an example of a switch.
Fig. 2 is an exploded perspective view of the switch structure viewed obliquely from the front upward.
Fig. 3 is an exploded perspective view of the switch as viewed obliquely from the upper side in the rear direction.
Fig. 4 is a schematic a-a end view of fig. 1.
Fig. 5 is a schematic B-B end view of fig. 1.
Fig. 6 is an end view showing an example of a switch of a comparative example.
Description of the reference numerals
1: switch with a switch body
101. 102, 104: display unit
103: indicator device
2: substrate
21: touch switch
22: light emitting part
221～223：LED
3: frame body
31: dividing wall
4: switch cover
41-43: slit or translucent member
44: dividing wall
441: through hole
5: a first light guide plate
6: second light guide plate
7: light guide plate holder
71: holding part
72: claw part
73: a guide portion.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a front view showing an example of a switch. In the present embodiment, the switch 1 is described with the direction of the plane shown in fig. 1 being the front (front) of each member, and the upper, lower, left, and right directions when facing the switch 1 in fig. 1 are the upper, lower, left, and right directions of each member. The switch 1 is a member that is installed in, for example, an instrument panel of a passenger car and operates an air conditioner. The switch 1 includes at least a button for turning on and off the device, and may further include, for example, a dial switch for changing a set temperature. The switch 1 lights up, for example, display units 101 and 102 for changing the direction of operation of the set temperature, an indicator 103 for displaying the open/close state (open/closed), and a display unit 104 for displaying the character "AUTO", so that the display units can be seen from the front side. The display units 101 and 102 are formed of a light guide plate and are always lit. The indicator 103 is turned on when the switch is on and the appliance is in an operating state, and turned off when the switch is off and the appliance is in an inoperative state. The display unit 104 is constantly turned on, for example. As described above, the indicator 103 is lit independently of the display portions 101, 102, and 104.
Fig. 2 is an exploded perspective view of the switch structure viewed obliquely from the front upward. Fig. 3 is an exploded perspective view of the switch structure viewed obliquely from the upper side in the rear direction. Fig. 4 is a schematic a-a end view of fig. 1. Fig. 5 is a schematic B-B end view of fig. 1. The switch 1 includes a substrate 2, a housing 3, a switch cover 4, a first light guide plate 5, a second light guide plate 6, and a light guide plate holder 7.
The substrate 2 is a circuit board on which electronic components are mounted, and is mounted with a touch switch 21 that is pressed through the switch cover 4 when the user presses the switch 1, and a light Emitting portion 22 formed of, for example, an led (light Emitting diode). The light emitting unit 22 includes: an LED221 for lighting the display portions 101 and 102 shown in fig. 1 (also referred to as a "first light-emitting portion"); an LED222 for lighting the indicator 103 shown in fig. 1 (also referred to as "second light emitting part"); and an LED223 for lighting the display section 104 shown in fig. 1.
The frame 3 is disposed on the substrate 2 and is a cylindrical frame extending in the front-rear direction of the switch 1. The housing 3 holds the switch cover slidably in the extending direction of the housing 3. In addition, a partition wall 31 extending in a tubular shape in the front-rear direction of the switch 1 is provided inside the housing 3, and the partition wall 31 partitions a first region in which light is captured from the LED221 and a second region in which light is captured from the LED 222. A dial switch (not shown) that rotates in the circumferential direction along the cylindrical side surface may be further provided outside the housing 3.
The switch cover 4 covers the front surface of the switch 1. Slits or light-transmitting members 41 to 43 are provided on the front surface side of the switch cover 4 so that the first light guide plate 5, the second light guide plate 6, and the like can be visually recognized from the outside. In addition, the switch cover 4 has a partition wall 44 extending in a cylindrical shape in the front-rear direction of the switch 1, and the partition wall 44 partitions a first region in which light is captured from the LED221 and a second region in which light is captured from the LED 222. The partition wall 44 is provided with a through hole 441 for connecting the light guide plate holder 7.
The first light guide plate 5 is a member whose front-side end portion is used to form the display portions 101 and 102 shown in fig. 1. The first light guide plate 5 diffuses light incident from the LEDs 221. In addition, the second light guide plate 6 is a member whose front-side end portion is used to form the indicator 103 shown in fig. 1. The second light guide plate 6 diffuses light incident on the end portion on the back surface side of the second light guide plate 6 mainly from the LEDs 222.
The light guide plate holder 7 is a cylindrical member connected to the switch cover 4 and extending further toward the substrate 2 side at the partition wall 44. The light guide plate holder 7 is made of a light-impermeable material. The end portion on the rear side of the light guide plate holder 7 is located rearward of the end portion on the front side of the partition wall 31 of the housing 3. Therefore, even when light from the LED is diffracted in the switch 1, the partition wall 31, the light guide plate holder 7, and the partition wall 44 can suppress light leakage between the first region where light is captured from the LED221 and the second region where light is captured from the LED 222. The end portion on the back side of the light guide plate holder 7 may be located outside or inside the end portion on the front side of the partition wall 31 of the housing 3.
The light guide plate holder 7 holds the first light guide plate 5 and the second light guide plate 6 between the light guide plate holder 7 and the switch cover 4. Specifically, the light guide plate holder 7 has a holding portion 71 for holding the first light guide plate 5. The holding portion 71 is a portion having a cross section in the shape of "コ" and an open front side, and an end portion of the first light guide plate 5 and an end portion of the partition wall 44 of the switch cover 4 are sandwiched therebetween so as to overlap.
Further, the light guide plate holder 7 includes: claw portions 72 protruding toward the left and right outer sides; and a guide portion 73 protruding toward the front side. The guide portion 73 of the light guide plate holder 7 is inserted into the partition wall 44 of the switch case 4 until the root portion of the guide portion 73 abuts on the end portion of the partition wall 44. The base portion of the guide portion 73 of the light guide plate holder 7 abuts against the end portion of the partition wall 44, and the claw portion 72 is inserted into the through hole 441 provided in the partition wall 44 of the switch case 4 by, for example, a snap-fit structure, whereby the light guide plate holder 7 and the switch case 4 are coupled to each other. At this time, the entire through hole 441 is covered by the light guide plate holder 7.
As shown in fig. 5, the claw portion 72 includes: a front part 721 of which the thickness is the largest in the middle part and becomes smaller toward the front; and a rear portion 722 that becomes smaller in thickness toward the rear. In a state where the claw portion 72 is inserted into the through hole 441, the entire light guide plate holder 7 is biased forward of the switch 1 by the rear portion 722 of the claw portion 72 and the through hole 441. By applying the bias in this manner, for example, even when vibration of the vehicle is applied to the switch 1, the generation of abnormal noise can be suppressed.
< comparative example >
Fig. 6 is an end view showing an example of a switch of a comparative example. In the present comparative example, the components corresponding to the above-described embodiment are denoted by corresponding reference numerals, and the description thereof is omitted. In the switch 1 of fig. 6, the second light guide plate 6 includes a claw portion 61 inserted into a through hole 441 provided in the partition wall 44 of the switch cover 4. That is, in the present comparative example, the switch 1 does not include the light guide plate holder 7, and the second light guide plate 6 is connected to the switch cover 4. In this case, since the partition wall 44 is provided with the through hole 441, it is difficult to partition the first region where light is captured from the LED221 and the second region where light is captured from the LED 222. That is, even when the light emitted from the LED222 is incident on the claw portion 61 inserted into the through hole 441 and the LED221 is turned off, some light may be diffused toward the light guide plate 6.
Here, the through hole 441 of the switch cover 4 is preferably formed in a resin-molded undercut shape. Therefore, in general, the through-hole 441 can be formed by applying a slide core for forming the through-hole 441 from the outside of the partition wall 44 and then filling a mold with resin. In particular, when the lateral width of the light guide plate 6 is, for example, less than about 10mm, it is difficult to form a non-penetrating recess inside the partition wall 44.
On the other hand, according to the light guide plate holder 7 of the above embodiment, the first light guide plate 5 and the second light guide plate 6 can be held between the light guide plate holder 7 and the switch cover 4. Further, since the light guide plate holder 7 is connected to the switch cover 4 and covers the entire through-hole 441 provided in the partition wall 44, light leakage can be suppressed.
The structure of the switch 1 shown in the embodiment is an example, and various modifications can be added thereto without departing from the problems and technical ideas of the present invention.
Claims (4)
1. A switch, characterized in that it comprises a switch body,
the switch is provided with:
a switch cover having a partition wall that partitions a first area that captures light from a first light-emitting portion and a second area that captures light from a second light-emitting portion that emits light independently of the first light-emitting portion;
a first light guide plate disposed in the first region so as to be visible from outside the switch cover, the first light guide plate diffusing light incident from the first light-emitting portion;
a second light guide plate which is disposed in the second region so as to be visible from outside the switch cover, and which diffuses light incident from the second light emitting unit; and
and a light guide plate holder connected to the switch cover, holding the first light guide plate and the second light guide plate between the light guide plate holder and the switch cover, and formed of a non-light-transmissive material.
2. The switch of claim 1,
the partition wall is a cylindrical wall surface having a through hole for connecting the light guide plate holder,
the light guide plate holder has a claw portion inserted into the through hole, and covers the entire through hole in a state of being connected to the switch cover.
3. The switch of claim 2, wherein,
the claw portion is obliquely abutted against the edge of the through hole so as to apply a force to the light guide plate holder to the switch cover.
4. The switch of claim 2 or 3,
the switch further includes a frame disposed on the substrate and having a cylindrical wall defining a first area in which the first light-emitting unit is disposed and a second area in which the second light-emitting unit is disposed,
the light guide plate holder includes a cylindrical portion extending toward the substrate side at the partition wall,
the end of the cylindrical portion of the light guide plate holder on the substrate side is located closer to the substrate side than the end of the cylindrical wall portion of the housing on the opposite side of the substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021016672A JP7266051B2 (en) | 2021-02-04 | 2021-02-04 | switch |
| JP2021-016672 | 2021-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114866083A true CN114866083A (en) | 2022-08-05 |
Family
ID=82627624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111008089.2A Pending CN114866083A (en) | 2021-02-04 | 2021-08-30 | Switch with a switch body |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7266051B2 (en) |
| CN (1) | CN114866083A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4268060B2 (en) * | 2004-01-23 | 2009-05-27 | カルソニックカンセイ株式会社 | Automotive push button switch |
| JP5241812B2 (en) * | 2010-12-22 | 2013-07-17 | キヤノン株式会社 | Switch device |
| JP2017112096A (en) * | 2015-12-11 | 2017-06-22 | 株式会社デンソー | Input device |
| JP7132034B2 (en) * | 2018-08-27 | 2022-09-06 | 株式会社ヴァレオジャパン | switch device |
-
2021
- 2021-02-04 JP JP2021016672A patent/JP7266051B2/en active Active
- 2021-08-30 CN CN202111008089.2A patent/CN114866083A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP7266051B2 (en) | 2023-04-27 |
| JP2022119495A (en) | 2022-08-17 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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