WO2007132817A1 - Dispositif d'entrée pourvu d'une fonction d'éclairage - Google Patents

Dispositif d'entrée pourvu d'une fonction d'éclairage Download PDF

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Publication number
WO2007132817A1
WO2007132817A1 PCT/JP2007/059882 JP2007059882W WO2007132817A1 WO 2007132817 A1 WO2007132817 A1 WO 2007132817A1 JP 2007059882 W JP2007059882 W JP 2007059882W WO 2007132817 A1 WO2007132817 A1 WO 2007132817A1
Authority
WO
WIPO (PCT)
Prior art keywords
input device
light
guide plate
light guide
illumination function
Prior art date
Application number
PCT/JP2007/059882
Other languages
English (en)
Japanese (ja)
Inventor
Tsuyoshi Hayama
Shozo Takamura
Manabu Shimaoka
Hisato Shimomura
Original Assignee
Alps Electric Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co., Ltd. filed Critical Alps Electric Co., Ltd.
Publication of WO2007132817A1 publication Critical patent/WO2007132817A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/044—Edge lighting of layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane

Definitions

  • the present invention relates to an input device with an illumination function provided in a mobile phone or the like, and more particularly, to a configuration of a light guide plate that guides light emitted from a light emitting diode in a surface direction of the input device.
  • the light guide member 102 disposed in the light guide, the plurality of light emitting diodes 103 disposed on the side surface of the light guide member 102, and the cavity (through hole) 104 provided in the light guide member 102 are accommodated in the printed circuit board.
  • a transparent or colored translucent push button portion 108 provided at a portion corresponding to the projection 106 on the outer surface
  • the light emitted from the light emitting diode 103 is guided to the vicinity of the push button portion 108 by the light guide member 102 and is emitted in the cavity 104. Therefore, the elastic sheet 107 and The operation surface of the push button unit 108 can be illuminated by the light emitted through the push button unit 108.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-356028
  • a large number of cavities (through holes) 104 are provided in the light guide member 102 for accommodating the domed metal panel contact 105. Therefore, in order to uniformly shine all the push button portions 108 that are difficult to uniformly guide the light emitted from one light emitting diode 103 over a wide range, it is inevitably necessary that a plurality of (in the above-described known example, 6 Light emitting diodes). Therefore, the number of parts and assembly As the number of man-hours increases, the manufacturing cost of the device becomes expensive, the device becomes larger, the power consumption is large!
  • the present invention has been made in order to solve the deficiencies in the prior art, and the object of the present invention is to provide an input device with an illumination function that can be manufactured inexpensively and in a small size with low power consumption. I will.
  • the present invention firstly includes an input device with an illumination function, a wiring board on which a required wiring pattern is formed, a light emitting diode mounted on the wiring board, A light guide plate that guides light radiated from the light emitting diode in a plane direction, a fixed contact of a push button switch that is provided on the light guide plate and is electrically connected to the wiring pattern; A metal dome that is a movable contact of the push button switch that switches between the plurality of fixed contacts between a conductive state and a non-conductive state; and a cover sheet provided with an actuator for pressing the metal dome.
  • a bottom surface for guiding the light emitted from the light emitting diode in the surface direction is formed in the setting portion of the metal dome in the light plate. In this way, when the bottom surface is formed in the setting portion of the metal dome in the light guide plate, the light emitted from the light emitting diode through the bottom surface portion can be guided in the direction of the surface of the light guide plate. Light can be uniformly guided to the entire surface of the light plate, and the number of light emitting diodes can be reduced.
  • a conductive post penetrating a surface force rear surface of the light guide plate is used as the fixed contact, and the wiring board and the guide The wiring pattern and the fixed contact are electrically connected by closely contacting the optical plate.
  • a through hole is formed in the light guide plate Therefore, it is not necessary to use a complicated manufacturing method such as making a light guide plate, and thus an input device with an illumination function can be manufactured at a low cost, and the wiring pattern and the light guide plate can be simply adhered to each other. Since the fixed contact can be electrically connected, the electrical connection between the wiring pattern and the fixed contact can be easily performed, and the assembly of the input device with the illumination function can be facilitated.
  • the wiring board is formed of a light-shielding white material.
  • the cover structure since the light emitted from the light emitting diode can be scattered on the surface of the wiring board formed of the light-shielding white material, the uniformity of the light irradiated to the cover sheet can be improved. it can.
  • the cover sheet is formed of a translucent white material. According to such a configuration, the light emitted from the light emitting diode can be scattered on the surface of the cover sheet formed of the translucent white material, so that the uniformity of the light irradiated on the cover sheet can be improved. it can.
  • the cover sheet is formed of a transparent material. According to the powerful configuration, the amount of light transmitted through the cover sheet can be increased, so that the brightness of the cover sheet can be increased. In addition, since the transparent material can be formed as thin as it is not necessary to contain the mixture in the resin, the input device can be formed thinner.
  • the cover sheet is formed of a transparent material and the surface thereof is subjected to light diffusion treatment. It was configured as follows. According to the powerful configuration, since the light emitted from the light emitting diode can be scattered on the surface of the cover sheet that has been subjected to the light diffusion treatment, the uniformity of the light irradiated to the cover sheet can be improved.
  • the actuator is formed of a light-shielding white material.
  • an input device with an illumination function that selectively illuminates the surrounding area of the actuator is provided. can get.
  • the actuator is formed of a transparent material.
  • the bottom surface for guiding the light emitted from the light emitting diode in the surface direction is formed in the setting portion of the metal dome in the light guide plate, the light is uniformly distributed on the entire surface of the light guide plate with a small number of light emitting diodes.
  • the input device with illumination function can be reduced in size, cost, and power can be reduced by reducing the number of components.
  • FIGS. 1 to 4 is an exploded perspective view of an input device with an illumination function according to the embodiment
  • FIG. 2 is an exploded side view of the input device with an illumination function according to the embodiment
  • FIG. 3 is an assembled state of the input device with an illumination function according to the embodiment.
  • Sectional drawing and FIG. 4 are principal part sectional drawing of the light-guide plate which concerns on embodiment.
  • the input device with an illumination function is not shown with the terminal portion la! ⁇ Emitted from the light emitting diode 2 and the required mounting parts including the wiring board 1 on which the required wiring pattern including the wiring is formed, the side light emitting type light emitting diode 2 and the varistor 3 mounted on the wiring board 1
  • a light guide plate 4 that guides light in a plane direction, a plurality of sets of push button switches fixed on the light guide plate 4 and a set of fixed contacts 5 and a set of fixed contacts in a conductive state or a non-conductive state. It is mainly composed of a metal dome 6 for switching to a state and a cover sheet 8 provided with an actuator 7 for pressing the metal dome 6.
  • the wiring board 1 can be formed of any known insulating material belonging to the public knowledge, the light emitted from the light emitting diode 2 is scattered to improve the uniformity of the light irradiated on the cover sheet 8. It is particularly desirable to form with a light-shielding white material.
  • This type of wiring board material includes reinforced plastics based on liquid crystal polymers and polyimide, Rigid systems such as glass epoxy and low-temperature fired ceramics can be used.
  • the wiring board 1 can have a single-layer structure or a multi-layer structure as required.
  • the surface of the wiring board formed of a non-white light-shielding material is covered with a white material.
  • the light guide plate 4 is formed of a highly transparent resin material such as acrylic resin, polycarbonate resin, or cyclic polyolefin resin, and each terminal portion formed on the wiring board 1 is formed on the upper surface thereof.
  • a step portion 9 having a bottom surface 9a is formed at a position corresponding to la.
  • the diameter of the step portion 9 is set to be slightly larger than the outer shape of the metal dome 6, and the depth of the step portion 9 is set to a total value of the height of the metal dome 6 and the height of the actuator 7.
  • the conductive post 5 is composed of a pin-shaped metal piece that penetrates from the upper surface to the lower surface of the bottom surface 9a, and the upper end surface and the lower end surface protrude from the upper surface and the lower surface of the bottom surface 9a, respectively.
  • the conductive post 5 set at the center portion of the bottom surface 9a and the conductive posts 5 set at the peripheral portion of the bottom surface 9a are arranged non-conductive with each other.
  • the upper and lower end surfaces of the conductive post 5 are made of gold or silver as necessary to improve the electrical connection with the metal dome 6 and to improve wear resistance. You can also add a tag.
  • the metal dome 6 functions as a movable contact of the push button switch, and is formed by forming a metal plate, for example, a stainless steel plate into a circular shape.
  • a metal plate for example, a stainless steel plate into a circular shape.
  • gold or silver is used as necessary to improve the electrical connection between the conductive posts 5 and to improve wear resistance. You can also add a tag.
  • the cover sheet 8 is formed with a resin film excellent in elasticity, such as polyethylene terephthalate.
  • the cover sheet 8 can be formed of a translucent white material, can be formed of a transparent material whose surface is subjected to light diffusion treatment, or can be formed of a transparent material.
  • the cover sheet 8 is formed of a translucent white material and formed of a transparent material whose surface is subjected to light diffusion treatment, the light emitted from the light emitting diode 2 is scattered on the surface of the cover sheet 8. Because you can The uniformity of the light irradiated to the cover sheet 8 can be improved.
  • the cover sheet 8 is formed of a transparent material, the amount of light transmitted through the cover sheet 8 can be increased, so that the brightness of the cover sheet 8 can be increased.
  • the actuator 7 presses the metal dome 6 and is set at a position corresponding to the central portion of the step portion 11 formed on the light guide plate 4 on one side of the cover sheet 8.
  • the actuator 7 can be formed of a light-shielding white material or a transparent material.
  • an input device with an illumination function that selectively illuminates the peripheral portion of the actuator can be obtained.
  • an input device with an illumination function that illuminates the entire surface of the cover sheet 8 including the setting portion of the actuator 7 can be obtained.
  • the input device with illumination function of this example is assembled in the following procedure. That is, first, necessary mounting parts including the light emitting diode 2 and the varistor 3 are mounted at predetermined positions on the wiring board 1. In addition, a conductive post 5 which is a fixed contact of the push button switch is implanted in the light guide plate 4. In addition, the actuator 7 is attached to one side of the cover sheet 8 in the required arrangement. After the pressing force, the wiring board 1 and the light guide plate are assembled together in a state where the terminal portion la formed on the wiring board 1 and the conduction post 5 planted on the light guide plate 4 are in contact with each other. As a method of assembling the wiring board 1 and the light guide plate, adhesion or snap coupling can be used.
  • the terminal portion la formed on the wiring board 1 is electrically connected to the conductive post 5 implanted in the light guide plate 4.
  • the metal dome 6 is housed in the stepped portion 9 of the light guide plate 4 with the upper side protruding.
  • the cover sheet 8 is attached to the surface of the light guide plate while the actuator 7 is housed in the stepped portion 9.
  • the step portion 9 having the bottom surface 9a is formed on the light guide plate 4 as the storage portion of the metal dome 6, so that a small number of light emitting diodes (three in the example of FIG. ) Can uniformly guide light to the entire surface of the light guide plate 4, and by reducing the number of parts, it is possible to reduce the size, cost and power consumption of the input device with an illumination function.
  • the conductive post 5 penetrating from the front surface cover to the back surface of the light guide plate 4 is implanted in the light guide plate 4 as a fixed contact of the push button switch. And the light guide plate 4 are brought into close contact with each other so that the wiring pattern and the fixed contact can be electrically connected. It is possible to facilitate the electrical connection between the screen and the fixed contact, and as a result, the assembly of the input device with the illumination function can be facilitated.
  • the actuator 7 and the force sheet 8 formed separately are joined afterwards, but the gist of the present invention is not limited to this.
  • FIG. 1 is an exploded perspective view of an input device with an illumination function according to an embodiment.
  • FIG. 2 is an exploded side view of the input device with an illumination function according to the embodiment.
  • FIG. 3 is a cross-sectional view of the assembled input device with an illumination function according to the embodiment.
  • FIG. 4 is a cross-sectional view of a main part of a light guide plate according to an embodiment.
  • FIG. 5 is an exploded side view of an input device with an illumination function according to a conventional example.

Abstract

Cette invention concerne un dispositif d'entrée pourvu d'une fonction d'éclairage, lequel dispositif peut être fabriqué à bas prix et il peut présenter une taille réduite ainsi qu'une faible consommation d'énergie. Le dispositif d'entrée pourvu d'une fonction d'éclairage susmentionné comprend un panneau de câblage (1) présentant un motif de câblage souhaité (1a), des diodes électroluminescentes (2) montées sur le panneau de câblage (1), une plaque de guidage de la lumière (4) conçue pour guider la lumière émise par les diodes électroluminescentes (2) dans un sens planaire, des contacts stationnaires (ou postes conducteurs) disposés sur la plaque de guidage de la lumière (4) conçus pour pousser des commutateurs, des dômes métalliques (ou contacts amovibles) (6) conçus pour commuter les contacts stationnaires dans un état conducteur ou dans un état non conducteur, et une feuille de couverture (8) pourvue d'actionneurs (7) permettant de pousser et d'actionner les dômes métalliques (6). Des portions pas (9) sont formées dans la surface de la plaque de guidage de la lumière (4), lesquelles présentent des faces arrières (9a) conçues pour recevoir les dômes métalliques (6).
PCT/JP2007/059882 2006-05-16 2007-05-14 Dispositif d'entrée pourvu d'une fonction d'éclairage WO2007132817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-136913 2006-05-16
JP2006136913 2006-05-16

Publications (1)

Publication Number Publication Date
WO2007132817A1 true WO2007132817A1 (fr) 2007-11-22

Family

ID=38693907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/059882 WO2007132817A1 (fr) 2006-05-16 2007-05-14 Dispositif d'entrée pourvu d'une fonction d'éclairage

Country Status (1)

Country Link
WO (1) WO2007132817A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08273473A (ja) * 1995-03-29 1996-10-18 Shin Etsu Polymer Co Ltd 照光式押釦スイッチ装置
JP2004356028A (ja) * 2003-05-30 2004-12-16 Mitsubishi Electric Corp 押釦スイッチ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08273473A (ja) * 1995-03-29 1996-10-18 Shin Etsu Polymer Co Ltd 照光式押釦スイッチ装置
JP2004356028A (ja) * 2003-05-30 2004-12-16 Mitsubishi Electric Corp 押釦スイッチ装置

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