WO2023171640A1 - 押しボタン照明構造及びそれを備えた車載機器 - Google Patents

押しボタン照明構造及びそれを備えた車載機器 Download PDF

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Publication number
WO2023171640A1
WO2023171640A1 PCT/JP2023/008451 JP2023008451W WO2023171640A1 WO 2023171640 A1 WO2023171640 A1 WO 2023171640A1 JP 2023008451 W JP2023008451 W JP 2023008451W WO 2023171640 A1 WO2023171640 A1 WO 2023171640A1
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WO
WIPO (PCT)
Prior art keywords
light
button
push button
shielding wall
push
Prior art date
Application number
PCT/JP2023/008451
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
賢二 曽我
Original Assignee
株式会社Ｊｖｃケンウッド
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 株式会社Ｊｖｃケンウッド filed Critical 株式会社Ｊｖｃケンウッド
Priority to JP2024506330A priority Critical patent/JP7736166B2/ja
Priority to CN202380015124.4A priority patent/CN118476002A/zh
Publication of WO2023171640A1 publication Critical patent/WO2023171640A1/ja
Priority to US18/829,206 priority patent/US12241624B2/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • 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
    • H01H13/02—Details
    • 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/128—Axially displaceable input devices for instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/139—Clusters of instrument input devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/166—Navigation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/34—Backlit symbols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
    • F21V3/0625—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics the material diffusing light, e.g. translucent plastics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor

Definitions

  • the present invention relates to an operation button illumination structure and in-vehicle equipment equipped with the same.
  • Patent Document 1 describes a technique in which a light-shielding tape is attached to a part of the light source in order to prevent light leakage in a key lighting structure of an electronic device.
  • the problem to be solved by the present embodiment relates to a push-button lighting structure that suppresses cost increases, improves production workability, and provides high-quality button illumination, and an in-vehicle device equipped with the push-button lighting structure.
  • a push-button lighting structure includes a light-transmitting base that is a part that is pressed by an operator, a fixed leg that elastically supports the light-emitting base, and a push-in column that presses a switch. and a button main body integrally molded with the light emitting base, the button body having a frame-shaped light shielding wall protruding toward the back side of the light emitting base.
  • the light shielding wall portion is formed at a position corresponding to the outer shape of the light emitting base inside the fixed leg portion and the push-in column in plan view.
  • This push button illumination structure is configured such that light emitted from a light source disposed inside the light shielding wall section in plan view is reflected on the inner surface of the light shielding wall section.
  • a push button lighting structure includes: a housing having an opening in which a push button is disposed; a substrate disposed inside the housing so as to face the opening; a light-transmissive switch disposed in the opening and exposed from the casing, and a button body located on a substrate side of the light-emitting base and integrated with the light-transmissive base and having light transmittance.
  • a frame-shaped light-shielding wall protruding from the board-side surface of the button body toward the board and formed at a position corresponding to the outer shape of the light-emitting base in plan view; a fixed leg that extends outside the light-shielding wall and is supported by the casing and elastically allows movement of the button body toward the substrate; and a fixed leg extending outside the light-shielding wall of the button body.
  • a push-in column that is erected toward the substrate and that operates the switch by coming into contact with the substrate; and a light source that is disposed in an area on the substrate surrounded by the light-shielding wall in plan view.
  • An in-vehicle device includes a box-shaped casing that is attached to a vehicle, an image display section that is arranged to be exposed at an opening on the front side of the casing, and an image display section that is arranged to be exposed at an opening in the front surface of the casing.
  • An operation section having a plurality of push buttons arranged on an outer frame section. At least one of the plurality of push buttons of the operation unit is an illuminated push button.
  • the push button illumination structure of the illuminated push button is the push button illumination structure according to the one embodiment or the other embodiment.
  • FIG. 1 is a front view of a vehicle-mounted device 91 that is an example of the vehicle-mounted device according to the embodiment.
  • FIG. 2 is a perspective view showing a push button lighting structure BK which is an example of the push button lighting structure according to the embodiment.
  • FIG. 3 is a perspective view showing the push button 3.
  • FIG. 4 is a sectional view taken along the line S4-S4 in FIG. 1 for explaining the lighting operation in the push button lighting structure BK.
  • FIG. 5 is a first sectional view for explaining the lighting operation in the push button lighting structure BKA of the comparative example.
  • FIG. 6 is a sectional view taken along the line S6-S6 in FIG. 1 for explaining the lighting operation in the push button lighting structure BK.
  • FIG. 7 is a second sectional view for explaining the lighting operation in the push button lighting structure BKA of the comparative example.
  • FIG. 8A is a front view showing an illumination mode in the push button illumination structure BK.
  • FIG. 8B is a front view showing an illumination aspect in the push button illumination structure BKA of the comparative example.
  • a push button lighting structure according to an embodiment and a vehicle-mounted device including the same will be explained using a push-button lighting structure BK of the embodiment and a vehicle-mounted device 91 including the same.
  • the in-vehicle device 91 of the embodiment is a car navigation device.
  • FIG. 1 is a front view of a vehicle-mounted device 91 that is an example of the vehicle-mounted device according to the present embodiment.
  • the in-vehicle device 91 is a so-called 2DIN wide-size car navigation device that is mounted on the dashboard of a vehicle such as an automobile.
  • the up, down, left, and right directions are defined by the directions of the arrows in FIG.
  • the front side of the paper in FIG. 1 is the front side
  • the back side of the paper is the rear side.
  • the in-vehicle device 91 includes a housing 1, an image display section 2, and an operation section 3G.
  • the housing 1 has a hexahedral box shape and has an opening 14 in the center of the front part. This front portion having an opening 14 is formed into a frame shape so as to expose the image display section 2 within the opening 14 .
  • An operating section 3G is arranged in the right outer frame portion of the opening 14.
  • the operation unit 3G has a plurality of push buttons 3a to 3c, 3, 3d to 3f arranged in the vertical direction.
  • the push button 3 located at the vertical center of the operation unit 3G has a portion pressed by a finger (a portion pressed by the operator) exposed as a rectangular button decoration portion 32 when viewed from the front.
  • the button decoration part 32 has a smaller dimension in the left-right direction than the other push buttons 3a to 3c and 3d to 3f.
  • the button decoration part 32 has a design in which the edges 11 and 12 of the housing 1 extend to the left and right sides of the push button 3, respectively, to emphasize the push button 3.
  • FIG. 2 is a perspective view of the internal structure of the operating section 3G, viewed diagonally from the lower right front.
  • push buttons 3a to 3c and push buttons 3d to 3f are not shown, and only push button 3 is shown.
  • the operation unit 3G includes a substrate 5, switches 51a to 51c, 51, 51d to 51f mounted on the front surface of the substrate 5, and a plurality of light emitting elements 52 as a light source.
  • the switches 51a-51c, 51, 51d-51f are tact switches.
  • the switches 51a to 51c, 51, 51d to 51f are mounted at positions corresponding to the push buttons 3a to 3c, 3, 3d to 3f, respectively. Further, the number of the plurality of light emitting elements 52 is four in this example. The plurality of light emitting elements 52 are mounted at positions corresponding to the vertices of a rectangle within the range included in the button decoration part 32 on the substrate 5 and spaced apart from each other when viewed from the front.
  • FIG. 3 is a perspective view showing the push button illumination structure BK including the push button 3, as seen diagonally from the upper right rear side.
  • FIG. 4 is a sectional view taken along the line S4-S4 in FIG. 1 for explaining the lighting operation in the push button lighting structure BK.
  • the push button 3 is a button that makes the contacts conductive by pushing the switch 51, and has a button body part 31 and a button decoration part 32.
  • the button main body portion 31 is made of milky white resin.
  • the button decoration portion 32 is made of a colored (for example, blue) resin that is transparent to light.
  • An example of a resin that can be used for the button body portion 31 is PC (polycarbonate resin).
  • An example of a resin that can be used for the button decoration portion 32 is PMMA (polymethyl methacrylate resin).
  • the button main body part 31 and the button decoration part 32 are integrally molded. Specifically, the button main body part 31 and the button decoration part 32 are integrally formed by, for example, two-color molding.
  • the button main body 31 includes a rectangular flat base 311, regulating legs 313, 314, a side wall 319, a first fixed leg 3F1 and a second fixed leg 3F2, It has a push-in column 312 and a light shielding wall part 35.
  • the regulating legs 313 and 314 are plate-shaped parts that extend rearward from the lower right corner and the upper right corner of the base 311, respectively.
  • the side wall portion 319 is a wall that stands up from the left edge of the base portion 311 toward the rear.
  • the rear tip position of the side wall portion 319 is located further forward than the rear tip positions of the regulating legs 313 and 314.
  • the first fixed leg portion 3F1 is formed to extend further downward from the lower rear end portion of the side wall portion 319.
  • the first fixed leg portion 3F1 includes a leg portion 315 that extends straight downward, and a fixed leg portion 316 that extends rearward from the tip of the leg portion 315.
  • the second fixed leg portion 3F2 is formed to extend further upward from the upper rear end portion of the side wall portion 319.
  • the second fixed leg portion 3F2 includes a leg portion 317 that extends straight upward, and a fixed leg portion 318 that extends rearward from the tip of the leg portion 317.
  • the fixed leg portions 316 and 318 which are the distal end portions, are supported by their root portions engaging with grooves 111 formed in the edge 11 of the housing 1. In this state, the fixed leg part 316 and the fixed leg part 318 are sandwiched between the housing 1 and the board 5. Specifically, as shown in FIGS. 3 and 4, the button main body 31 can be moved vertically and vertically relative to the housing 1 in its natural state by engaging the root portions of the fixed legs 316, 318 with the grooves 111. Movement in the left and right direction is restricted.
  • the push-in column 312 is erected toward the rear at the center portion in the vertical direction near the right edge of the base portion 311. As shown in FIG. 2, the push-in column 312 is a member that pushes in the contacts of the switch 51, and is formed to have a T-shaped cross section and has high rigidity.
  • the push-in column 312 is disposed in its natural state so that its tip is opposed to the upper surface of the switch 51 (the upper surface in FIG. 4) at a position spaced forward by a predetermined distance Ha.
  • the regulating leg portions 313 (not shown in FIG. 4) and the regulating leg portions 314 have their tips spaced forward by a predetermined distance Hb from the upper surface of the substrate 5 (the upper surface in FIG. 4).
  • the first fixed leg portion 3F1 and the second fixed leg portion 3F2 are elastically deformed favorably no matter which position of the base portion 311 is pressed.
  • the elastic deformation of the first fixed leg portion 3F1 and the second fixed leg portion 3F2 allows the base portion 311 to move closer to the substrate 5. Due to this movement, the push-in column 312 presses the switch 51 to push it in.
  • the button decoration part 32 is a part that is exposed from the housing 1 and can apply force toward the board 5 with a finger.
  • the button decoration part 32 has a rectangular plate-shaped light emitting base 321 and flange parts 322 and 323 extending from a position lower than the light emitting base 321.
  • the flange portion 322 extends leftward from the left edge 321a of the light emitting base 321.
  • the flange portion 323 extends rightward from the right edge 321b of the light emitting base 321. No flange portions are provided on the upper and lower edges of the button decoration portion 32.
  • the button main body 31 corresponds to the left and right edges 321a, 321b and the upper and lower edges 321c, 321d of the light emitting base 321 on the rear surface 311a of the base 311 on the substrate 5 side.
  • the light-shielding wall portion 35 is a frame-shaped wall portion that protrudes toward the back side of the light emitting base 321 in the button main body portion 31 .
  • the rear surface 311a of the base 311 on which the light-shielding wall portion 35 is formed is located on the substrate 5 side (in FIG. (lower side).
  • the light-shielding wall portion 35 has a light-shielding wall portion 35a located at a position corresponding to the edge 321a and a light-shielding wall portion 35b located at a position corresponding to the edge 321b. Furthermore, as shown in FIG. 6, the light-shielding wall portion 35 includes a light-shielding wall portion 35c located at a position corresponding to the edge 321c and a light-shielding wall portion 35d located at a position corresponding to the edge 321d. That is, the light shielding wall portion 35 is formed at a position corresponding to the outer shape of the light emitting base 321.
  • the four light-emitting elements 52 are arranged on the substrate 5 at a position closer to the light-shielding wall 35 than the center position of the light-emitting base 321, inside the light-shielding wall 35 in a front view (planar view).
  • the light L1 that directly reaches the rear surface 311a of the base 311 is incident on the rear surface 311a at an incident angle ⁇ b.
  • the rear surface 311a is a surface facing the substrate 5 in parallel, and the incident angle ⁇ b is sufficiently larger than the critical angle ⁇ for total reflection at the rear surface 311a.
  • the light L1 enters the base 311 without being substantially reflected. Then, the light L1 directly enters the light emitting base 321 of the button decoration part 32 from the button main body part 31. The light L1 is then emitted from the front surface of the light emitting base 321 to the outside as illumination light L1a.
  • the light emitting base 321 is visually recognized from the outside as being emitted in the color of the button decoration part 32.
  • the critical angle ⁇ is determined by the refractive index of the member.
  • the gaps in the left-right direction in the light-shielding wall portion 35 will be described with reference to FIGS. 4 and 5.
  • the gap between the left edge 321a of the light emitting base 321 and the edge 11 of the housing 1 is defined as a gap GpL.
  • the gap between the right edge 321b of the light emitting base 321 and the edge 12 of the housing 1 is defined as a gap GpR.
  • the light L2 emitted from the light emitting element 52 in the direction of the gap GpL directly reaches the inner surface 35a1 of the light shielding wall portion 35a near the light emitting element 52.
  • the inner surface 35a1 is a surface extending in a direction generally perpendicular to the substrate 5, the incident angle ⁇ a of the light L2 with respect to the inner surface 35a1 is sufficiently smaller than the critical angle ⁇ . Therefore, the light L2 is totally reflected on the inner surface 35a1 and heads toward the rear surface 311a of the base 311 as reflected light L2a. That is, the light L2 is reflected by the inner surface 35a1 of the light-shielding wall portion 35 and irradiates the rear surface 311a of the base portion 311 of the button body portion 31 as reflected light L2a whose traveling direction is changed to a direction other than the direction toward the gap GpL. That is, the light L2 is reflected by the inner surface 35a1 and is irradiated to a portion other than the gap GpL with a different traveling direction.
  • FIG. 5 is a diagram illustrating the path of light in a push button illumination structure BKA that uses a button body 131 in which the left-right direction light-shielding wall 35 is not formed in place of the button body 31 in FIG. 3.
  • the light L2p emitted from the light emitting element 52 toward the left gap GpL directly reaches the rear surface 1311a of the base 1311 corresponding to the base 311 since there is no light shielding wall 35. Since the incident angle of the light L2p with respect to the rear surface 1311a is an incident angle ⁇ d that is larger than the critical angle ⁇ , the light L2p enters the inside of the base 1311. The light then passes through the flange 1322 of the button decoration part 132 and is emitted from the gap GpL to the outside as peripheral leakage light L2p1 of the light emitting base 1321. This also applies to the case where the light emitted from the light emitting element 52 passes through the right flange 1323 of the button decoration part 132 and is emitted to the outside from the gap GpR.
  • the peripheral leakage light L2p1 is visually recognized as left and right leakage light leaking to the outside of the left and right edges of the light emitting base 1321.
  • This peripheral leakage light L2p1 becomes blue light, which is the color of the button decoration part 132, by passing through the flange 1322. Therefore, the outline of the light emitting base 1321 becomes unclear, and the quality of illumination of the button is impaired.
  • the light L3 emitted from the light emitting element 52 toward the gap GpB directly reaches the inner surface 35d1 of the light shielding wall 35d close to the light emitting element 52.
  • the inner surface 35d1 is a surface extending in a direction generally perpendicular to the substrate 5, the incident angle ⁇ c of the light L3 with respect to the inner surface 35d1 is sufficiently smaller than the critical angle ⁇ . That is, the light L3 is totally reflected on the inner surface 35d1 and heads toward the rear surface 311a of the base 311 as reflected light L3a.
  • FIG. 7 is a diagram illustrating the path of light in a push button illumination structure BKA that uses a button body 131 in which a light shielding wall 35 is not formed in place of the button body 31 in FIG. 3.
  • the light L4p emitted from the light emitting element 52 toward the gap GpB directly reaches the rear surface 1311a of the base 1311 since there is no light shielding wall 35.
  • the incident angle of the light L4p with respect to the rear surface 1311a is an incident angle ⁇ d that is larger than the critical angle ⁇ . Therefore, the light L4p enters the inside of the button main body part 131. Since there are no flanges on the upper and lower edges of the light emitting base 1321, the light passes through the button body 131 and is emitted to the outside from the gap GpB. That is, the light L4p is emitted as light L4p1 that leaks above and below the light emitting base 1321. This also applies to the upper gap GpT.
  • the leaked light L4p1 is visible outside the upper and lower edges of the light emitting base 1321.
  • the light emitting base 1321 is not interposed between the gap GpB and the gap GpT and the light emitting element 52. Therefore, the vertical leakage light L4p1 becomes light with high brightness of the color (milky white) of the button body 131, which is not blue, and the illumination quality of the button is greatly impaired.
  • FIG. 8A is a front view showing a light emitting state of the push button illumination structure BK using the button body 31 having the light shielding wall 35 described with reference to FIGS. 4 and 6.
  • the light emitting base 321 in the button decoration part 32 emits light with a clear outline (gray part), and maintains high quality illumination of the button.
  • FIG. 8B is a front view showing a light emitting state of the push button illumination structure BKA using the button main body 131 that does not have the light shielding wall 35 described with reference to FIGS. 5 and 7.
  • the left edge and right edge of the light emitting base 1321 in the button decoration part 132 have unclear outlines (even the edges are gray) due to the peripheral leakage light L2p1.
  • a high-brightness light-emitting region BL which is different from the light-emitting base 1321, is visible on the outside thereof. For this reason, the quality of button illumination is impaired.
  • the light emitting site BL is shown as the darkest colored region in FIG. 8B.
  • the push button lighting structure BK of the embodiment does not require a light shielding member and the work of attaching it, thereby suppressing an increase in cost. Further, in the push button illumination structure BK, since the light shielding wall portion 35 is integrally formed with the button body portion 31, production workability is improved. Further, in the push button lighting structure BK, the light emitting base 321 of the button decoration part 32 emits light at a good distance, so the lighting is of high quality.
  • the shape of the light-shielding wall portion 35 and the inclination angle of the inner surfaces 35a1 to 35d1 may be appropriately set according to the critical angle based on the refractive index of the resin forming the light-shielding wall portion 35.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Push-Button Switches (AREA)
PCT/JP2023/008451 2022-03-11 2023-03-07 押しボタン照明構造及びそれを備えた車載機器 WO2023171640A1 (ja)

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JP2024506330A JP7736166B2 (ja) 2022-03-11 2023-03-07 押しボタン照明構造及びそれを備えた車載機器
CN202380015124.4A CN118476002A (zh) 2022-03-11 2023-03-07 按钮照明构造以及包括该按钮照明构造的车载设备
US18/829,206 US12241624B2 (en) 2022-03-11 2024-09-09 Push button illumination structure, and vehicle-mounted apparatus provided with same

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JP2022037901 2022-03-11

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CN (1) CN118476002A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CN117976452A (zh) * 2024-04-01 2024-05-03 经纬缔创(深圳)智能有限公司 一种墙壁开关控制器及照明系统

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JP2006302555A (ja) * 2005-04-18 2006-11-02 Matsushita Electric Ind Co Ltd 押しボタン装置およびこれを用いた電話装置
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JP2021136202A (ja) * 2020-02-28 2021-09-13 株式会社Ｊｖｃケンウッド スイッチノブの照明構造及びそれを備えた電子機器

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JPH0446329U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1990-08-22 1992-04-20
JP2006302555A (ja) * 2005-04-18 2006-11-02 Matsushita Electric Ind Co Ltd 押しボタン装置およびこれを用いた電話装置
JP2007066714A (ja) * 2005-08-31 2007-03-15 Mitsumi Electric Co Ltd 発光スイッチ
JP2010287381A (ja) * 2009-06-10 2010-12-24 Brother Ind Ltd 押ボタンスイッチ装置及びミシン
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JP2021136202A (ja) * 2020-02-28 2021-09-13 株式会社Ｊｖｃケンウッド スイッチノブの照明構造及びそれを備えた電子機器

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US12241624B2 (en) 2025-03-04
US20240426472A1 (en) 2024-12-26
CN118476002A (zh) 2024-08-09
JPWO2023171640A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 2023-09-14
JP7736166B2 (ja) 2025-09-09

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