EP1389788B1 - Indicateur de fonction pour la visualisation de l'état d'un dispositif - Google Patents

Indicateur de fonction pour la visualisation de l'état d'un dispositif Download PDF

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Publication number
EP1389788B1
EP1389788B1 EP02018105A EP02018105A EP1389788B1 EP 1389788 B1 EP1389788 B1 EP 1389788B1 EP 02018105 A EP02018105 A EP 02018105A EP 02018105 A EP02018105 A EP 02018105A EP 1389788 B1 EP1389788 B1 EP 1389788B1
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EP
European Patent Office
Prior art keywords
light
light distribution
indicator
light emitting
emitting element
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.)
Expired - Lifetime
Application number
EP02018105A
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German (de)
English (en)
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EP1389788A1 (fr
Inventor
Volkan Yuksel
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
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.)
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Publication date
Application filed by Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to DE60230738T priority Critical patent/DE60230738D1/de
Priority to EP02018105A priority patent/EP1389788B1/fr
Publication of EP1389788A1 publication Critical patent/EP1389788A1/fr
Application granted granted Critical
Publication of EP1389788B1 publication Critical patent/EP1389788B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H01H2219/0622—Light conductor only an illuminated ring around keys

Definitions

  • the present invention relates to a function indicator for visually indicating an operating state of equipment.
  • function indicators used e.g. in consumer electronic devices or industrial equipment, for visually indicating the status, activation or deactivation etc. of electrical or electronic functions of the device or equipment to a human operator.
  • Function indicators of this kind can have the form of an illuminated ring around a push button of a switch, examples of which can be found in elevator control panel applications, front panels of television sets and the like.
  • Light emitting diodes are a suitable means for illuminating a function indicator of this kind.
  • Light emitting diodes typically emit a majority of the generated light from the front, due to the provision of an embedded convex lens which collects the light rays generated by the semiconductor chip of the LED. This lens provides for the emission of the light rays in directions diverging by a specified angle from a light emission main axis of the light emitting diode.
  • US 5,391,848 discloses a function indicator in the form of an illuminated light ring around a push-button switch, the light ring being illuminated by a plurality of light emitting diodes.
  • the structure disclosed in this document comprises at least 3 optical elements and 5 light emitting diodes in order to achieve a satisfactory visual appearance of the function indicator to the human operator.
  • the push button is transparent.
  • a light reflector is provided for guiding light generated by the light emitting diodes to the push button, the light reflector including a reflector portion and a base portion.
  • a plurality of axially extending apertures are formed in the light reflector for guiding light generated by associated ones of the light emitting diodes to the push button.
  • US 5,039,832 discloses an illuminated touch button system having a light ring element as well as a button element located within and surrounded by the light ring element, as well as an array of light emitting diodes.
  • the light ring element proposed in this document comprises a series of individual chambers, each chamber including a set of three light-receiving triangulated surfaces. These surfaces have a series of edges which act to diffuse the illumination of the light emitting diodes. These edges in combination with the chambers, are provided to produce a relatively even, bright light distribution in the portion of the light ring element surrounding the button element.
  • optical function indicators known from these prior art documents suffer from the disadvantage, that a considerable number of light emitting diodes is required to achieve a visual indication which can be considered satisfactory for a human operator.
  • a large number of light emitting diodes is required to achieve a sufficient minimum brightness level over the entire surface of the transparent push button.
  • a comparatively large number of light emitting diodes is necessary in order to achieve a uniform brightness distribution of the light ring around the touch button.
  • the provision of a ring of LEDs is mandatory to achieve this, since the known structure is unable to distribute the light generated by a single LED in a well balanced manner over the entire light ring. This leads to an increased power consumption for illuminating the known function indicators.
  • an illuminated knob dial for a traditional telephone set is known. At least one light emitting element emits visible light rays in directions diverging from a light emission main access of the light emitting element.
  • An optically transparent knob dial has a light distribution portion having a first and a second main surface which define a light distribution plane there-between. There are crater shaped recesses opposite to each other in the main surfaces of the knob dial, and the light emitting element is arranged dose to one of the two recesses such that the vertices of recesses are located essentially on the light emission main axis of the light emitting element.
  • the opening angles of the recesses are such that light rays emitted from the light emitting element are refracted by the surface of the first recess to be incident on the surface of the second recess at an angle of total reflection, to be thereby reflected into the light distribution portion.
  • a dial operating apparatus comprising a dial having a plurality of sectorized light paths for illuminating essentially point-shaped indicator lenses at the periphery of the dial.
  • the sectorized light paths are provided to enable a rotating movement of the dial knob relative to light emitting diodes.
  • the knob dial receives the light from the light emitting diodes in the direction of the main axis of the sectorized light paths.
  • a rotary switch mechanism is known.
  • Fig. 4 of this document shows a light distribution plane, an indicator portion formed integral with the light distribution plane and extending from the periphery of the light distribution portion in a direction perpendicular to the light distribution plane.
  • the indicator portion is arranged around the rotary dial button having a central axis extending through the light distribution plane.
  • the light distribution plane received light from a light emitting element arranged at a lateral position relative to the indicator portion.
  • a function indicator for visually indicating an operating state of equipment, which function indicator has an increased light coupling efficiency and offers an improved light distribution of the light coupled into the function indicator across a visibly arranged indicator surface of the function indicator.
  • the function indicator comprises an optically transparent member which has a light distribution portion for distributing light received from at least one light emitting element to propagate between a first and a second main surface of the light distribution portion of the optically transparent member, which first and second main surfaces define a light distribution plane of the optically transparent member.
  • recesses are provided opposite to each other on both the first and the second main surfaces of the light distribution portion. At least portions of these recesses have a crater shape, these craters preferably being in the form of rotationally symmetrical funnels.
  • the light emitting element is arranged close to one of the two recesses, such that the vertices of the two opposing recesses are located essentially on the light emission main axis of the light emitting element.
  • the opening angles of the first and second recesses are selected such that light rays emitted from the light emitting element are refracted by the surface of the first recess proximate to the light emitting element. These refracted light rays then travel in the optically transparent member at an increased divergency angle, compared with the divergence of the light rays incident on the first recess, to be then incident on the surface of the second recess at an angle of total reflection.
  • the opening angles of the two recesses are such, that by means of the refraction and total reflection, the emitted light rays are directed into the light distribution portion, to travel generally in a lateral direction in the light distribution plane toward the periphery of the light distribution portion of the optically transparent member.
  • the indicator portion is formed integral with said light distribution portion and extends from the periphery of said light distribution portion in a direction perpendicular to the light distribution plane.
  • the light indicator portion has a hollow, generally cylindrical shape, the term "cylindrical" not being limited to circular cross sections, but also including rectangular or polygonal cross sections.
  • a periphery of the light distribution portion acts as an indicator portion with an indicator surface which is visible by a human operator. This arrangement is advantageous, e.g. if an omni-directional visibility of the function indicator is desired.
  • an indicator portion is coupled to the periphery of the light distribution portion such that the indicator portion extends generally perpendicularly from the light distribution plane.
  • the indicator portion can be optically coupled to the light distribution portion by means of an inclined surface at the periphery of the light distribution portion of the optically transparent member, the inclination angle being selected such that the light rays travelling in a direction of the light distribution plane, are coupled into the indicator portion by means of total reflection.
  • the vertices of the first and second recesses can be arranged to be abutting, or some space can be left between the two vertices of the recesses.
  • the recesses preferably have a funnel shape, i.e. a rotational symmetry, to match with the rotational symmetry of the light ray pattern emitted by a light emitting element with circular cross section around the light emission main axis. If light emitting elements with rectangular, triangular or any other cross section are used, the shape of the crater is preferably adapted to match with the particular radiation pattern achieved by the particular light emitting element.
  • the light emitting element is mounted in and a hollow, generally cylindrical member protruding from the main surface of the light distribution portion which is proximate to the light emitting element, this hollow protrusion having an inner diameter and cross section shape suitable for fitting the light emitting element.
  • the hollow member, the light distribution portion and the indicator portion are formed integral as a single moulded optically transparent member.
  • the hollow, generally cylindrical shape of the light indicator can be provided to accommodate a push button as well as a switch operated by a push button.
  • small diameter through holes can be provided in the light distribution portion or in the light indicator portion for wires making an electrical connection of the switch arrangement with external circuitry.
  • a through hole in the light distribution portion of the optically transparent member for receiving a shaft which connects the push button member located within the hollow cylindrical light indicator portion, to the switch arrangement arranged on the other side, i.e. behind the light distribution portion of the optically transparent member. If the diameter of the through hole is kept sufficiently small, and/or if the shaft connecting the push button with the switch arrangement through the light distribution portion is made from optically transparent material, preferably with the same refractive index as the material of the light distribution portion, the through hole will not cause any significant disturbance of the light distribution in the light distribution portion of the optically transparent member.
  • Alternative arrangements include the provision of more than one through hole to mechanically couple the push button with the switch arrangement through the light distribution portion.
  • each light emitting element can be generally sufficient to satisfactorily illuminate the indicator surface of the optically transparent member, more than one light emitting elements can be provided and preferably equally distributed across the light distribution portion of the optically transparent member, each light emitting element being associated with a pair of recesses opposite to each other as described above.
  • the optically transparent member is made of poly carbonate, silicon dioxide, glass or any other transparent organic or inorganic rigid or flexible material with a refractive index larger than one.
  • the optically transparent member can be coloured or uncoloured. It can be clear or it can be diffused or light opaque. If more than one light emitting element is provided, these light emitting elements can have different light colours such that different operational states can be distinguished by the different colours.
  • Fig. 1 shows a typical front view of a television set having a push button switch 2 surrounded by a light ring 1.
  • the light ring 1 appears dark to a human operator, or illuminated, for example red when the television set is in standby mode, and green if the television set is on.
  • the visible light ring is essentially constituted by an indicator surface 1 of an optically transparent member which indicator surface, when illuminated from behind, appears as the light ring around the push button 2.
  • the light ring and the push button 2 are provided essentially flush with each other, that is the push button 2 is located essentially in a plane defined by the indicator surface 1 of the light ring 1.
  • Reference numeral 3 denotes a casing of a television set accommodating the push button 2 surrounded by the light ring 1.
  • G denotes a gap between the push button 2 and the light ring 1 in order to allow a stroke movement of the push botton when actuating the switch.
  • Fig. 2 shows a cross section of the structure shown in Fig. 1 along the line A-A' in Fig. 1 .
  • light rays R emitted from LED devices 4 are coupled into an optically transparent member OB in order to guide the emitted light rays R towards the indicator surface 1 which is arranged at the front of the TV set to be visible by an operator of the push button 2.
  • the indicator surface 1 constitutes an exit for the light rays R leaving the optically transparent member OB.
  • the optically transparent member OB shown in Fig. 2 comprises a light distribution portion BS which has a first main surface 11 as well as a second main surface 12 opposite to the first main surface 11. These two surfaces define a light distribution plane.
  • the term light distribution "plane” is not limited to a strictly mathematical meaning but denotes a variety of laterally oriented propagation directions between the first and the second main surfaces 11, 12, as indicated in Fig. 2 by means of the generally horizontal orientation of the light rays R in the light distribution portion BS.
  • Reference numeral CS denotes an indicator portion of the optically transparent member OB which has a hollow cylindrical shape and which extends in an essentially perpendicular direction from the second main surface 12 of the light distribution portion BS and which has a circular cross section in this embodiment, as shown in Fig. 1 .
  • Reference numeral 10 of Fig. 2 denotes generally cylindrical hollow members protruding from the first main surface 11 of the light distribution portion BS. Each of the hollow members 10 receive a light emitting diode 4, each light emitting diode having a convex lens proximate to the first main surface 11 of the light distribution portion BS.
  • the generally cylindrical hollow member 10 with a triangular, star shaped or square cross section for fitting light emitting elements 4 with a circular cross section. This will reduce the contact surface between the base portion of the light emitting element 4 and the hollow member 10 and hence reduce unwanted lateral light coupling from the base portion of light emitting element 4 into the hollow member 10.
  • Reference numeral 7 denotes first recesses provided in the first main surface 11 of the light distribution portion BS, each recess being associated with one of the LEDs 4.
  • Reference numeral 8 denotes second recesses provided in the second main surface 12 of the light distribution portion BS.
  • each light emitting diode 4 is associated with a first recess 7 proximate to the light emitting diode 4 and with a second recess 8 opposite to the first recess 7.
  • the vertices of the first and second recesses associated with a particular light emitting diode 4 are arranged to abut to each other on the light emission main axis of the LED 4.
  • Reference numeral 6 denotes an inclined surface at the periphery of the light distribution portion BS. This inclined surface acts as a reflector exploiting the phenomenon of total reflection, for coupling light rays R travelling in the light distribution plane of the light distribution portion BS, into the indicator portion CS in order to leave the indicator portion CS through the light ring 1.
  • Reference numeral 5 denotes a shaft mounted to a rear side of the push button 2.
  • the shaft 5 reaches through a hole concentrically arranged in the light distribution portion BS of the optically transparent member OB in order to mechanically connect the push button 2 to a switch arrangement not shown in Fig. 2 , which is located outside the hollow space defined by the generally cylindrical hollow indicator portion CS and behind the light distribution portion BS.
  • Fig. 3 shows an enlarged view of a portion of the optically transparent member OB.
  • the optically transparent member OB according to this embodiment has three stages for deflecting the light rays emitted by the light emitting diodes 4 to reach the indicator surface 1 of the indicator portion CS.
  • the first stage is a conical or funnel shaped surface of the recess 7 which acts to further increase the angle of divergence of the light rays emitted by the LED 4 by means of refraction.
  • 1 denotes the incidence angle of the light rays on the surface of the first recess 7.
  • the refracted light rays R In order to deflect the refracted light rays R to travel in a lateral direction, i.e.
  • the recess 8 shown in Fig. 3 constitutes an additional conical or funnel shaped surface in the light distribution portion BS opposite the recess 7. This second surface acts to reflect the light rays refracted by the surface of the first recess 7 by means of so-called total internal reflection of the light rays at the conical surface of the recess 8.
  • the opening angles of the first recess 7 and the second recess 8 are such that the light rays R are refracted by the surface of recess 7 to be incident on the surface of recess 8 at an angle of total reflection, to be thereby reflected into the light distribution plane.
  • a third inclined surface 6 at the periphery of the light distribution portion BS redirects the light rays R to enter into the indicator portion CS best shown in Fig.2 .
  • the opening angles of the first recess 7 and the second recess 8 as well as the inclination angle of the surface 6 are designed such that the angles ⁇ 2 and ⁇ 3 are less than Sin -1 (n air /n OB ) wherein n air denotes the refractive index of the air and n OB denotes the refractive index of the material used for manufacturing the optically transparent member OB.
  • the light distribution portion BS has a generally circular shape and accordingly, in the shown embodiment the inclined surface 6 has a conical shape.
  • the light guided by the light distribution portion BS and the indicator portion CS may propagate in the light distribution plane with additional total reflections between the first and the second main surfaces of the light distribution portion BS and between the inner and outer surfaces of the cylindrical indicator portion CS until they reach the indicator surface 1 and leave the optically transparent member OB.
  • the indicator surface 1 can be provided with a certain surface roughness to scatter the light rays. If the indicator surface 1 is a polished surface, a brighter light ring will be perceived at a reduced viewing angle. In order to increase the viewing angle, a diffuse coating can be applied to the indicator surface 1, or a texture may be provided in the mould used for manufacturing the optically transparent member OB at the area corresponding to the indicator surface 1. In order to achieve optimum light guiding properties of the optically transparent member OB, it is preferable that the other surfaces of the optically transparent member OB are as smooth as possible to obtain an optimal internal total reflection factor.
  • the preferred embodiment shown in the Figures is made of transparent polycarbonate material with a refractive index n OB of about 1,59 for the visible spectrum of light.
  • the opening angles of the first recess 7 and the second recess 8 in the embodiment shown must therefore be such that ⁇ 3 and ⁇ 2 in Fig. 3 are less than 39°.
  • the inclination angle of the conical surface 6 at the periphery of the light distribution portion BS can be selected to be approximately 45° with respect to the light distribution plane defined by the first and second main surfaces 11 and 12 of the light distribution portion BS.
  • the given geometrical definition for the preferred embodiment provides an acceptable range of functionality for a refractive index n OB in the range of 1,45 to 1,75. Accordingly, not only polycarbonate but also other transparent material may be suitable for manufacturing the optically transparent member OB. This flexibility also allows the use of multi colour light emitting diodes as light sources, for example red and green, since similar light rate propagation results will be achieved for each colour that this type of LED is able to emit.
  • the values given for the opening angles ⁇ 1 and ⁇ 2 in the specific example are not the only values for which a sufficient coupling of the light into the light distribution portion BS can be obtained. Opening angles for the recesses 7 and 8 in a range of ⁇ 15% of the values given for ⁇ 1 and ⁇ 2 will achieve a satisfactory result.
  • first and second recesses 7 and 8 have been shown to be in a symmetrical relation with the light emission main axis of the LED 4, it would be possible to provide an offset angle between the symmetry axis of one or both of the two recesses 7, 8 and the light emission main axis of the LED. This offset angle would affect the divergence of the light rays propagating in the optical body, and hence the divergence of the light rays leaving the indicator surface 1.

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  • Illuminated Signs And Luminous Advertising (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (14)

  1. Indicateur de fonction pour une indication visuelle d'un état fonctionnel d'un dispositif, ledit indicateur de fonction comprenant
    - au moins un élément émetteur de lumière (4) destiné à émettre des rayons (R) d'une lumière visible dans des directions s'écartant d'un axe principal d'émission lumineuse dudit élément émetteur de lumière (4) ; et
    - un organe (OB) à transparence optique disposant d'une partie (BS) de distribution de la lumière ayant une première (11) et une seconde (12) surfaces principales qui définissent entre elles un plan de distribution de la lumière, et au moins une partie d'indicateur (CS) ayant un couplage optique vers un pourtour de ladite partie de distribution de la lumière, ladite partie d'indicateur ayant une surface d'indicateur (1) destinée à être disposé de manière visible pour ledit opérateur ;
    - une première alvéole (7) prévue dans ladite première surface principale (11) dudit organe (OB) à transparence optique, et une seconde alvéole (8) prévue dans ladite seconde surface principale (12) dudit organe (OB) à transparence optique opposée à ladite première alvéole ;
    - des parties au moins de chacune desdites première et seconde alvéoles ayant une forme de cratère, chaque cratère définissant un sommet et un angle d'ouverture (ϕ1, ϕ2) ;
    - ledit élément émetteur de lumière (4) étant disposé près d'une (7) des deux alvéoles (7, 8) de telle sorte que les sommets desdites alvéoles soient placés essentiellement sur l'axe principal d'émission lumineuse dudit élément émetteur de lumière (4) ;
    - dans lequel les angles d'ouverture (ϕ1, ϕ2) desdites première (7) et seconde (8) alvéoles sont tels que des rayons lumineux (R) émis depuis ledit élément émetteur de lumière (4) soient réfractés par la surface de ladite première alvéole (7) pour arriver sur la surface de ladite seconde alvéole (8) sous un angle (θ3) de réflexion totale, pour être de cette façon réfléchis dans la partie (BS) de distribution de la lumière pour se propager entre lesdites première et seconde surfaces principale (11, 12) le long du plan de distribution de la lumière ;
    caractérisé en ce que ladite partie d'indicateur (CS) fait partie intégrante de ladite partie (BS) de distribution de la lumière et s'étend depuis le pourtour de ladite partie (BS) de distribution de la lumière dans une direction perpendiculaire audit plan de distribution de la lumière ;
    dans lequel ladite partie (CS) d'indicateur de lumière a une forme générale cylindrique, creuse, avec une section circulaire, rectangulaire ou polygonale.
  2. Indicateur de fonction selon la revendication 1, dans lequel les sommets desdites première (7) et seconde (8) alvéoles sont en contact l'un avec l'autre.
  3. Indicateur de fonction selon la revendication 1 ou 2, dans lequel lesdites première (7) et seconde (8) alvéoles en forme de cratère ont une forme présentant une symétrie de révolution.
  4. Indicateur de fonction selon l'une quelconque des revendications précédentes, comprenant un organe creux (10) en saillie depuis la première surface principale (11) de ladite partie de distribution de lumière sur le pourtour de ladite première alvéole (7) pour recevoir ledit élément émetteur de lumière (4) dans l'alignement desdites première (7) et seconde (8) alvéoles.
  5. Indicateur de fonction selon l'une quelconque des revendications précédentes, dans lequel une surface réfléchissante (6) est prévue sur le pourtour de ladite partie (BS) de distribution de la lumière, ladite surface réfléchissante (6) étant inclinée par rapport audit plan de distribution de la lumière de telle sorte que la lumière se propageant dans ladite partie (BS) de distribution de la lumière ait un couplage optique par une réflexion totale dans ladite partie (CS) de l'indicateur lumineux.
  6. Indicateur de fonction selon la revendication 1, comprenant un dispositif d'interrupteur actionné par un bouton-poussoir (2) disposant d'un bouton-poussoir (2) pouvant être actionné par l'opérateur qui est concentrique avec ladite partie (CS) de l'indicateur cylindrique, une surface externe dudit bouton-poussoir (2) étant d'une manière générale au niveau d'un plan défini par ladite surface (1) de l'indicateur de ladite partie (CS) de l'indicateur.
  7. Indicateur de fonction selon la revendication 6, dans lequel un ou plusieurs éléments émetteurs de lumière (4) sont prévus dans une disposition qui est symétrique par rapport à un emplacement central de ladite partie (BS) de distribution de la lumière dudit organe (OB) à transparence optique.
  8. Indicateur de fonction selon la revendication 7, dans lequel ledit bouton-poussoir (2) tout comme ledit dispositif d'interrupteur sont logés à l'intérieur de ladite partie creuse (CS) de l'indicateur lumineux.
  9. Indicateur de fonction selon la revendication 8, dans lequel ladite partie (CS) de l'indicateur lumineux s'étend depuis ladite seconde surface principale (12) de ladite partie (BS) de distribution de la lumière dudit organe (OB) à transparence optique.
  10. Indicateur de fonction selon la revendication 8 ou 9, dans lequel des trous de passage sont prévus dans ladite partie (BS) de distribution de la lumière ou dans ladite partie (CS) de l'indicateur lumineux, pour effectuer une connexion électrique dudit dispositif d'interrupteur à bouton-poussoir (2) avec des circuits extérieurs.
  11. Indicateur de fonction selon la revendication 6 ou 7, dans lequel ledit dispositif d'interrupteur est prévu à l'extérieur de ladite partie cylindrique de l'indicateur, au moins un trou de passage est prévu dans ladite partie (BS) de distribution de la lumière, et au moins une tige est prévue pour relier mécaniquement ledit bouton-poussoir audit dispositif d'interrupteur à travers ledit trou au moins prévu.
  12. Indicateur de fonction selon l'une quelconque des revendications précédentes, dans lequel ledit élément émetteur de lumière (4) est une diode électroluminescente qui comprend une lentille convexe destinée à émettre les rayons lumineux générés avec une divergence spécifiée par rapport à son axe principal d'émission lumineuse.
  13. Indicateur de fonction selon l'une quelconque des revendications précédentes, dans lequel ledit organe (OB) à transparence optique est constitué de polycarbonate.
  14. Indicateur de fonction selon l'une quelconque des revendications précédentes, dans lequel ledit élément émetteur de lumière (4) est monté pour éclairer ledit organe (OB) à transparence optique de telle sorte que ledit axe principal d'émission lumineuse dudit élément émetteur de lumière ait une direction générale perpendiculaire audit plan de distribution de la lumière.
EP02018105A 2002-08-13 2002-08-13 Indicateur de fonction pour la visualisation de l'état d'un dispositif Expired - Lifetime EP1389788B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60230738T DE60230738D1 (de) 2002-08-13 2002-08-13 Funktionsanzeige zum Anzeigen des Zustandes einer Vorrichtung
EP02018105A EP1389788B1 (fr) 2002-08-13 2002-08-13 Indicateur de fonction pour la visualisation de l'état d'un dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02018105A EP1389788B1 (fr) 2002-08-13 2002-08-13 Indicateur de fonction pour la visualisation de l'état d'un dispositif

Publications (2)

Publication Number Publication Date
EP1389788A1 EP1389788A1 (fr) 2004-02-18
EP1389788B1 true EP1389788B1 (fr) 2009-01-07

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JP4367850B2 (ja) * 2004-09-27 2009-11-18 シチズン電子株式会社 照光式スイッチ
FR2886451B1 (fr) * 2005-05-25 2011-05-27 Legrand France Appareillage electrique comprenant une plaque enjoliveur a fonction lumineuse
FR2886452A1 (fr) * 2005-05-25 2006-12-01 Legrand France Appareillage electrique comprenant une touche de commande lumineuse
JP4708220B2 (ja) 2006-03-03 2011-06-22 富士通株式会社 照明装置及びこれを用いた撮像装置
DE102007049571A1 (de) * 2007-10-16 2009-04-23 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätbedienvorrichtung
CN101883997A (zh) * 2007-11-30 2010-11-10 汤姆森特许公司 带有计量侧散射器的多向光管
EP2339602B1 (fr) * 2009-11-06 2013-05-22 RAFI GmbH & Co. KG Dispositif de commutation comprenant un reflecteur
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