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EP2462604B1 - Group of momentary-contact switches as control panel which can be illuminated in motor vehicles - Google Patents

Group of momentary-contact switches as control panel which can be illuminated in motor vehicles Download PDF

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Publication number
EP2462604B1
EP2462604B1 EP10732877.5A EP10732877A EP2462604B1 EP 2462604 B1 EP2462604 B1 EP 2462604B1 EP 10732877 A EP10732877 A EP 10732877A EP 2462604 B1 EP2462604 B1 EP 2462604B1
Authority
EP
European Patent Office
Prior art keywords
light
actuating
switch array
pushbutton switch
array according
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.)
Not-in-force
Application number
EP10732877.5A
Other languages
German (de)
French (fr)
Other versions
EP2462604A1 (en
Inventor
Joachim Korherr
Harald Koehnlein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BCS Automotive Interface Solutions GmbH
Original Assignee
BCS Automotive Interface Solutions GmbH
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 BCS Automotive Interface Solutions GmbH filed Critical BCS Automotive Interface Solutions GmbH
Publication of EP2462604A1 publication Critical patent/EP2462604A1/en
Application granted granted Critical
Publication of EP2462604B1 publication Critical patent/EP2462604B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H13/83—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
    • H01H2219/00—Legends
    • H01H2219/028—Printed information
    • 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
    • H01H2219/056—Diffuser; Uneven surface
    • 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
    • H01H2221/07—Actuators transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/026—Car

Definitions

  • the invention relates to a key switch group, which is particularly suitable for use as illuminable control panel in motor vehicles.
  • switch groups which are installed in a panel or a frame and are constructed of illuminable switch units. Each switch unit has its own lighting source. It is also known to use a Lichtieiter Weg to illuminate a plurality of switch units, which distributes the light from a common light source or a few common light sources to a plurality of switch units. Both solutions are relatively expensive.
  • a control panel which has actuating elements which are arranged on a common optical waveguide path.
  • the optical waveguide leads light coupled by LEDs to the actuating elements, which each have a light coupling structure, which interacts with the common optical waveguide path.
  • the invention provides a push-button group with illuminable switch units, which works with a light source or only a few light sources and does not require a separate optical waveguide structure for distributing the light to the various switch units.
  • the key switch group according to the invention has a covered by a transparent film frame having recesses in each of which an actuating element is slidably received.
  • the actuators are designed with light-conducting and lichtkoppelnden structures.
  • a common light source or only a few common light sources are optically coupled to the light coupling structures of the actuators, which in turn are optically coupled to each other by adjacent light coupling structures.
  • the light-conducting structures guide the light coupled into the actuators to the actuating surface adjacent to the foil.
  • the actuators may be provided on their bordering on the foil actuating surface with symbols that are visible through the film. But it is preferably the film itself, which is provided with symbols and / or labels, which are assigned to the actuating elements arranged behind it.
  • the frame consists of translucent material, eg. a plate of a polycarbonate, the If required, symbols / labels can be extended laterally beyond the actuating surface behind, so that even larger symbols / labels can be used.
  • a common printed circuit board preferably closes the key switch group on the rear side facing away from the film.
  • the light sources and in opposition to the end faces remote from the film of the actuating elements associated switch elements are arranged.
  • Fig. 1 shows a smooth control panel 10 through a transparent film 12 (FIG. Fig. 2 ) is formed. Through the film or on the film itself, four symbols shown by way of example 14, 16, 18, 20 and a label 22 are visible. Dashed lines are under the film in a frame 34 (FIG. Fig. 2 ) formed round recesses 24, 26, 28, 30,32 indicated.
  • the frame 34 is formed by a plastic sheet of transparent material such as a polycarbonate plastic.
  • the recesses 24 to 32 form slide guides for inserted block-shaped actuating elements 36, 38, 40, 42 and 44, which consist of a transparent material such as a polycarbonate plastic.
  • a circuit board 50 closes the Tastschaltertik on the side facing away from the film 12 back.
  • the printed circuit board 50 is provided with two light sources 52, 54 in the form of light-emitting diodes (LEDs). and equipped with switch elements 56, 58, 60, 62, 64, which correspond to the actuators 36 to 44.
  • LEDs light-emitting diodes
  • the actuators can all be the same, but also designed differently, depending on the ergonomic requirements of the realized with the Tastschalter devis panel.
  • the Fig. 3a and 3b schematically show an embodiment of such an actuator.
  • the actuator is a solid body of transparent material such as a polycarbonate plastic and consists of a cuboid base body 70 and a cylindrical guide body 72 placed centrally thereon.
  • the actuator due to its solid construction, is made of a material whose refractive index is greater than that of air. altogether a light guide.
  • This light guide has on the cuboid base body 70 laterally optical input and output surfaces and introduces coupled light in the cylindrical guide body 72 a; starting from there it radiates through the foil 12 Fig. 2
  • the two light sources 52 and 54 radiate into the lateral coupling surfaces of the outer actuating elements 36 and 44.
  • the light from both light sources is coupled into all actuation elements via the closely adjacent optical input and output surfaces, and is available for illuminating the respective associated symbols or labels.
  • the inscription 22 "SPORT" has an extension that extends laterally beyond the boundaries of the recess 28. Nevertheless, this label is completely illuminated, because at the outer edges of the underlying paragraph of the actuator body 70 couples the light in the transparent frame 34.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Input From Keyboards Or The Like (AREA)

Description

Die Erfindung betrifft ein Tastschaltergruppe, die sich besonders zur Verwendung als beleuchtbares Bedienfeld in Kraftfahrzeugen eignet.The invention relates to a key switch group, which is particularly suitable for use as illuminable control panel in motor vehicles.

Bekannt sind Schaltergruppen, die in einer Blende oder einem Rahmen eingebaut sind und aus beleuchtbaren Schaltereinheiten aufgebaut sind. Jede Schaltereinheit hat eine eigene Beleuchtungsquelle. Es ist auch bekannt, zur Beleuchtung mehrerer Schaltereinheiten eine Lichtieiterstruktur zu verwenden, die das Licht aus einer gemeinsamen Lichtquelle oder wenigen gemeinsamen Lichtquellen auf mehrere Schaltereinheiten verteilt. Beide Lösungen sind relativ aufwendig.Known switch groups, which are installed in a panel or a frame and are constructed of illuminable switch units. Each switch unit has its own lighting source. It is also known to use a Lichtieiterstruktur to illuminate a plurality of switch units, which distributes the light from a common light source or a few common light sources to a plurality of switch units. Both solutions are relatively expensive.

Aus der US 2009/173605 A1 ist ein Bedienfeld bekannt, das Betätigungselemente aufweist, die auf einer gemeinsamen Lichtleiterbahn angeordnet sind. Die Lichtleiterbahn führt von LEDs eingekoppeltes Licht zu den Betätigungselementen, die jeweils eine lichtkoppelnde Struktur aufweisen, welche mit der gemeinsamen Lichtleiterbahn zusammenwirkt.From the US 2009/173605 A1 a control panel is known which has actuating elements which are arranged on a common optical waveguide path. The optical waveguide leads light coupled by LEDs to the actuating elements, which each have a light coupling structure, which interacts with the common optical waveguide path.

Durch die Erfindung wird eine Tastschaltergruppe mit beleuchtbaren Schaltereinheiten geschaffen, die mit einer Lichtquelle oder nur wenigen Lichtquellen auskommt und keine gesonderte Lichtleiterstruktur zur Verteilung des Lichtes auf die verschiedenen Schaltereinheiten benötigt.The invention provides a push-button group with illuminable switch units, which works with a light source or only a few light sources and does not require a separate optical waveguide structure for distributing the light to the various switch units.

Die erfindungsgemäße Tastschaltergruppe hat einen durch eine transparente Folie abgedeckten Rahmen, der Aussparungen aufweist, in denen jeweils ein Betätigungselement verschiebbar aufgenommen ist. Die Betätigungselemente sind mit lichtleitenden und lichtkoppelnden Strukturen ausgeführt. Eine gemeinsame Lichtquelle ist oder nur wenige gemeinsame Lichtquellen sind die optisch mit den lichtkoppelnden Strukturen der Betätigungselemente gekoppelt, die ihrerseits durch benachbarte lichtkoppelnde Strukturen miteinander optisch gekoppelt sind. Die lichtleitenden Strukturen führen das in die Betätigungselemente eingekoppelte Licht zu der an die Folie angrenzenden Betätigungsfläche. Die Betätigungselemente können auf ihrer an die Folie grenzenden Betätigungsfläche mit Symbolen versehen sein, die durch die Folie hindurch sichtbar sind. Bevorzugt ist es aber die Folie selbst, die mit Symbolen und/oder Beschriftungen versehen ist, die den dahinter angeordneten Betätigungselementen zugeordnet sind. Diese Symbole werden dann durch die Betätigungselemente beleuchtet. Wenn auch der Rahmen aus lichtdurchlässigem Material besteht, z.B.. eine Platte aus einem Polycarbonat, können die Symbole/Beschriftungen bei Bedarf seitlich über die dahinterliegende Betätigungsfläche hinaus ausgedehnt werden, so dass auch größere Symbole/Beschriftungen verwendet werden können.The key switch group according to the invention has a covered by a transparent film frame having recesses in each of which an actuating element is slidably received. The actuators are designed with light-conducting and lichtkoppelnden structures. A common light source or only a few common light sources are optically coupled to the light coupling structures of the actuators, which in turn are optically coupled to each other by adjacent light coupling structures. The light-conducting structures guide the light coupled into the actuators to the actuating surface adjacent to the foil. The actuators may be provided on their bordering on the foil actuating surface with symbols that are visible through the film. But it is preferably the film itself, which is provided with symbols and / or labels, which are assigned to the actuating elements arranged behind it. These symbols are then illuminated by the actuators. Although the frame consists of translucent material, eg. a plate of a polycarbonate, the If required, symbols / labels can be extended laterally beyond the actuating surface behind, so that even larger symbols / labels can be used.

Eine gemeinsame Leiterplatte verschließt vorzugsweise die Tastschaltergruppe auf der von der Folie abgewandten Rückseite. Auf dieser Leiterplatte sind die Lichtquellen und in Gegenüberlage zu den von der Folie abgewandten Endflächen der Betätigungselemente zugeordnete Schalterelemente angeordnet.A common printed circuit board preferably closes the key switch group on the rear side facing away from the film. On this circuit board, the light sources and in opposition to the end faces remote from the film of the actuating elements associated switch elements are arranged.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die beigefügten Zeichnungen. In den Zeichnungen zeigen:

  • Fig. 1 eine Draufsicht einer Tastschaltergruppe;
  • Fig. 2 die Tastschaltergruppe in schematischer Schnittansicht;
  • Fig. 3a ein Betätigungselement in Seitenansicht; und
  • Fig. 3b ein Betätigungselement in Draufsicht.
Further advantages and features of the invention will become apparent from the following description with reference to the accompanying drawings. In the drawings show:
  • Fig. 1 a plan view of a Tastschaltergruppe;
  • Fig. 2 the key switch group in a schematic sectional view;
  • Fig. 3a an actuator in side view; and
  • Fig. 3b an actuator in plan view.

Fig. 1 zeigt ein glattes Bedienfeld 10, das durch eine transparente Folie 12 (Fig. 2) gebildet ist. Durch die Folie hindurch oder auf der Folie selbst sind vier beispielshalber gezeigte Symbole 14, 16, 18, 20 sowie eine Beschriftung 22 sichtbar. Gestrichelt sind unter der Folie in einem Rahmen 34 (Fig. 2) gebildete runde Aussparungen 24, 26, 28, 30,32 angedeutet. Der Rahmen 34 ist durch eine Kunststofftplatte aus transparentem Material wie ein Polycarbonat-Kunststoff gebildet. Die Aussparungen 24 bis 32 bilden Schiebeführungen für eingesetzte blöckchenförmige Betätigungselemente 36, 38, 40, 42 und 44, die aus einem transparenten Material wie ein Polycarbonat-Kunststoff bestehen. Fig. 1 shows a smooth control panel 10 through a transparent film 12 (FIG. Fig. 2 ) is formed. Through the film or on the film itself, four symbols shown by way of example 14, 16, 18, 20 and a label 22 are visible. Dashed lines are under the film in a frame 34 (FIG. Fig. 2 ) formed round recesses 24, 26, 28, 30,32 indicated. The frame 34 is formed by a plastic sheet of transparent material such as a polycarbonate plastic. The recesses 24 to 32 form slide guides for inserted block-shaped actuating elements 36, 38, 40, 42 and 44, which consist of a transparent material such as a polycarbonate plastic.

Eine Leiterplatte 50 verschließt die Tastschaltergruppe auf der von der Folie 12 abgewandten Rückseite. Die Leiterplatte 50 ist bei der gezeigten Ausführungsform mit zwei Lichtquellen 52, 54 in Form von Leuchtdioden (LEDs) sowie mit Schalterelementen 56, 58, 60, 62, 64 bestückt, die den Betätigungselementen 36 bis 44 entsprechen.A circuit board 50 closes the Tastschaltergruppe on the side facing away from the film 12 back. In the embodiment shown, the printed circuit board 50 is provided with two light sources 52, 54 in the form of light-emitting diodes (LEDs). and equipped with switch elements 56, 58, 60, 62, 64, which correspond to the actuators 36 to 44.

Die Betätigungselemente können alle gleich, aber auch verschieden ausgebildet sein, je nach den ergonomischen Anforderungen an das mit der Tastschaltergruppe verwirklichte Bedienfeld.The actuators can all be the same, but also designed differently, depending on the ergonomic requirements of the realized with the Tastschaltergruppe panel.

Die Fig. 3a und 3b zeigen schematisch ein Ausführungsbeispiel für ein solches Betätigungselement. Das Betätigungselement ist ein massiver Körper aus transparentem Material wie ein Polycarbonat-Kunststoff und besteht aus einem quaderförmigen Grundkörper 70 und einem darauf mittig aufgesetzten zylindrischen Führungskörper 72. Das Betätigungselement bildet aufgrund seiner massiven Ausführung aus einem Material, dessen Brechungsindex größer ist als der von Luft, insgesamt einen Lichtleiter. Dieser Lichtleiter hat am quaderförmigen Grundkörper 70 seitlich optische Ein- und Auskoppelflächen und führt eingekoppeltes Licht in den zylindrischen Führungskörper 72 ein; von dort ausgehend durchstrahlt es die Folie 12. Bei der in Fig. 2 gezeigten Ausführung strahlen die beiden Lichtquellen 52 und 54 in die seitlichen Einkoppelflächen der äußeren Betätigungselemente 36 und 44 ein. Über die seitlichen eng benachbarten optischen Ein- und Auskoppelflächen wird das Licht beider Lichtquellen in alle Betätigungselemente eingekoppelt und steht zur Beleuchtung der jeweils zugeordneten Symbole oder Beschriftungen zur Verfügung.The Fig. 3a and 3b schematically show an embodiment of such an actuator. The actuator is a solid body of transparent material such as a polycarbonate plastic and consists of a cuboid base body 70 and a cylindrical guide body 72 placed centrally thereon. The actuator, due to its solid construction, is made of a material whose refractive index is greater than that of air. altogether a light guide. This light guide has on the cuboid base body 70 laterally optical input and output surfaces and introduces coupled light in the cylindrical guide body 72 a; starting from there it radiates through the foil 12 Fig. 2 In the embodiment shown, the two light sources 52 and 54 radiate into the lateral coupling surfaces of the outer actuating elements 36 and 44. The light from both light sources is coupled into all actuation elements via the closely adjacent optical input and output surfaces, and is available for illuminating the respective associated symbols or labels.

Bei der gezeigten Ausführungsform hat die Beschriftung 22 "SPORT" eine Ausdehnung, die seitlich über die Grenzen der Ausnehmung 28 hinausgeht. Dennoch wird diese Beschriftung vollständig ausgeleuchtet, weil an deren äußeren Rändern der dahinterliegende Absatz des Betätigungselement-Grundkörpers 70 das Licht in den transparenten Rahmen 34 einkoppelt.In the embodiment shown, the inscription 22 "SPORT" has an extension that extends laterally beyond the boundaries of the recess 28. Nevertheless, this label is completely illuminated, because at the outer edges of the underlying paragraph of the actuator body 70 couples the light in the transparent frame 34.

Claims (8)

  1. A pushbutton switch array comprising a frame (34) which is covered by a transparent film (12) and includes recesses (24, 26, 28, 30, 32) which each have an actuating element (36, 38, 40, 42, 44) accommodated therein for displacement, the actuating elements (36 - 44) being configured to have light-guiding and light-coupling structures, and further comprising a shared light source (52, 54) or few shared light sources (52, 54) which are optically coupled to the light-coupling structures of the actuating elements (36 - 44), characterized in that the actuating elements (36 - 44), for their part, are optically coupled to each other by adjoining light-coupling structures, the light-guiding structures guiding the light coupled into the actuating elements (36 - 44) to the actuating surface adjacent to the film (12).
  2. The pushbutton switch array according to claim 1, further comprising a shared printed circuit board (50) which has the light sources (52, 54) and assigned switch elements (56, 58, 60, 62, 64) arranged thereon that are located in opposition to the end faces of the actuating elements (36 - 44) facing away from the film (12).
  3. The pushbutton switch array according to claim 1 or 2, in which the actuating elements (36 - 44) are made from a transparent plastic material so as to be solid.
  4. The pushbutton switch array according to any of the preceding claims, in which the actuating surfaces of the actuating elements (36 - 44) are provided with symbols (14, 16, 18, 20).
  5. The pushbutton switch array according to any of the preceding claims, in which the frame (34) is formed by a plate made from a light-transmissive material.
  6. The pushbutton switch array according to claim 5, in which the film (12) is provided with symbols (14 - 20) and/or legends (22) which are assigned to the actuating elements (36 - 44).
  7. The pushbutton switch array according to claim 6, in which at least one of the symbols (14 - 20) and/or legends (22) engages laterally over an associated actuating surface of an actuating element (36 - 44).
  8. The pushbutton switch array according to any of the preceding claims for use as an illuminatable operating panel (10) in a motor vehicle.
EP10732877.5A 2009-08-05 2010-07-12 Group of momentary-contact switches as control panel which can be illuminated in motor vehicles Not-in-force EP2462604B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009036209A DE102009036209B4 (en) 2009-08-05 2009-08-05 Illuminable push-button group and its use as an illuminated control panel in motor vehicles
PCT/EP2010/004237 WO2011015272A1 (en) 2009-08-05 2010-07-12 Group of momentary-contact switches as control panel which can be illuminated in motor vehicles

Publications (2)

Publication Number Publication Date
EP2462604A1 EP2462604A1 (en) 2012-06-13
EP2462604B1 true EP2462604B1 (en) 2015-06-03

Family

ID=42561124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10732877.5A Not-in-force EP2462604B1 (en) 2009-08-05 2010-07-12 Group of momentary-contact switches as control panel which can be illuminated in motor vehicles

Country Status (7)

Country Link
US (1) US8993910B2 (en)
EP (1) EP2462604B1 (en)
JP (1) JP5802206B2 (en)
CN (1) CN102484010B (en)
BR (1) BR112012002450B1 (en)
DE (1) DE102009036209B4 (en)
WO (1) WO2011015272A1 (en)

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Publication number Priority date Publication date Assignee Title
CN104021968A (en) * 2014-06-20 2014-09-03 上海宏英智能科技有限公司 Vehicle-mounted CAN bus key panel and control method thereof
CN108389747A (en) * 2018-02-07 2018-08-10 北京埃利沃德科技有限公司 Door of railway carriage controls switch button
IT201800005275A1 (en) * 2018-05-11 2019-11-11 DEVICE THAT CAN BE INSTALLED IN ELECTRICAL USE AND RELATIVE METHOD OF REALIZATION
DE102021109294A1 (en) 2021-04-14 2022-10-20 Ifm Electronic Gmbh capacitive switch

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Publication number Priority date Publication date Assignee Title
JPS5775430U (en) 1980-10-28 1982-05-10
DE3407937A1 (en) * 1984-03-03 1985-09-12 Debeg GmbH, 2000 Hamburg Apparatus input keyboard having operating elements which can be operated mechanically and can be sensed
DE4139554A1 (en) * 1991-10-14 1993-04-15 Fela Mikrotechnik Ag ELECTRIC KEY SWITCH
DE29514051U1 (en) * 1995-09-01 1995-11-16 Société d'Applications Generales d'Electricité de Mécanique SAGEM, Paris Level keyboard for data acquisition
DE19704253C2 (en) * 1997-02-05 2000-01-20 Hella Kg Hueck & Co Operating unit for a motor vehicle component, in particular for the control unit of a motor vehicle air conditioning system
TWM335731U (en) * 2008-01-09 2008-07-01 Ichia Tech Inc Lateral lighting keypress module and using keypress panel thereof
CN201146131Y (en) * 2008-01-22 2008-11-05 闳晖实业股份有限公司 Thin key module with reflection structure
TWM335733U (en) * 2008-01-22 2008-07-01 Ichia Tech Inc Key pressing structure with 3-dimension pattern
JP4402735B1 (en) * 2008-12-16 2010-01-20 ポリマテック株式会社 Key sheet, light-shielding light guide sheet, push button switch, and method for manufacturing key sheet

Also Published As

Publication number Publication date
JP2013501322A (en) 2013-01-10
BR112012002450A2 (en) 2016-03-01
DE102009036209B4 (en) 2012-01-26
US8993910B2 (en) 2015-03-31
WO2011015272A1 (en) 2011-02-10
DE102009036209A1 (en) 2011-02-17
BR112012002450B1 (en) 2019-10-29
US20120186962A1 (en) 2012-07-26
JP5802206B2 (en) 2015-10-28
CN102484010A (en) 2012-05-30
CN102484010B (en) 2014-10-01
EP2462604A1 (en) 2012-06-13

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