EP0474330B1 - An einem Paneel bzw. an einem Rahmen befestigte Anzeigeleuchten - Google Patents

An einem Paneel bzw. an einem Rahmen befestigte Anzeigeleuchten Download PDF

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Publication number
EP0474330B1
EP0474330B1 EP19910304471 EP91304471A EP0474330B1 EP 0474330 B1 EP0474330 B1 EP 0474330B1 EP 19910304471 EP19910304471 EP 19910304471 EP 91304471 A EP91304471 A EP 91304471A EP 0474330 B1 EP0474330 B1 EP 0474330B1
Authority
EP
European Patent Office
Prior art keywords
bush
panel
chassis
aperture
led
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
EP19910304471
Other languages
English (en)
French (fr)
Other versions
EP0474330A2 (de
EP0474330A3 (en
Inventor
Geoffrey Stephen Edwards
Philip Malcolm Logan
Michael Fellowes
Trevor Armistead
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.)
Oxley Developments Co Ltd
Original Assignee
Oxley Developments Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB909019666A external-priority patent/GB9019666D0/en
Priority claimed from GB9019713A external-priority patent/GB2247742A/en
Priority claimed from GB909027045A external-priority patent/GB9027045D0/en
Application filed by Oxley Developments Co Ltd filed Critical Oxley Developments Co Ltd
Publication of EP0474330A2 publication Critical patent/EP0474330A2/de
Publication of EP0474330A3 publication Critical patent/EP0474330A3/en
Application granted granted Critical
Publication of EP0474330B1 publication Critical patent/EP0474330B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00

Definitions

  • the present invention relates to indicator lamps of the type adapted for panel mounting (References to panel mounting include chassis mounting).
  • a sealing device comprising a first part of resilient material for insertion, in use, lengthwise into a chassis aperture, the first part having a shoulder adjacent one end for limiting the depth of insertion of the first part into the aperture, and a second part for insertion, in use, into a corresponding shaped first bore in the first part which extends lengthwise from the shouldered end of the first part, one end of the second part carrying an outwardly directed detent for expanding the first part, on the side of the chassis opposite to that engaged by the shoulder, sufficiently to inhibit subsequent withdrawal of the first part from the chassis aperture, at least a portion of the second part being transparent or translucent such that light may pass from one side of the chassis to the other.
  • the latter sealing device was designed such that the second part comprised a solid cylindrical body portion of diameter slightly smaller than that of the bore in the first member and which has an annular detent at its one end.
  • the other end of the body was formed with a lens portion having a convex surface and a shoulder portion for engaging the projecting end of the first part.
  • the cylindrical body forming the second part was received in a blind bore in one end of the first part.
  • the opposite end of the first part had a further blind bore in which was positioned a light emitting device, such as an LED.
  • the latter device was fixed in the further blind bore by a clip or a screw.
  • the sealing means using the annular, outwardly directed detent was applied to the lens of the lamp or to a holder for the lens and in no way with the light emitting device itself.
  • FIG. 1 and 2 of the accompanying drawings An initially cylindrical bush 10 of a resilient plastics material, such as PTFE, having a peripheral shoulder 12 at one end, is inserted into a circular aperture in a panel or chassis 14. This corresponds to the "first part" of UK 1530304.
  • a cylindrical bodied LED 16 (whose periphery is indicated by chain lines in Figs. 1 and 2) is fixed securely within a cylindrical longitudinal bore in an outer rigid metal sleeve 18.
  • a lens end 24 of the LED projects from one end of the metal sleeve 18 and terminals 20, 22 of the LED project from the opposite end of the sleeve 18.
  • the LED is fixed within the metal sleeve 18 by adhesive and/or suitable potting compound.
  • the inner peripheral surface of the metal sleeve 18 is purely cylindrical, the outer periphery is formed firstly with an outwardly directed shoulder 24a at one end, for engaging the bush 10, and secondly with an outwardly directed annular detent 26 located approximately midway along the length of the sleeve 18.
  • the PTFE bush 10 is first inserted into the panel/chassis aperture and the metal sleeve (containing the LED) is then slowly and gently pushed through the bush 10 (terminal end first) so that the detent 26 distorts the bush 10 to assume the positions shown in present Figures 1 and 2 and thereby resist subsequent withdrawal. Imperfect holes can be improved by the use of smear of silicone grease on the PTFE bush prior to insertion.
  • This arrangement has been very successful commercially and provides an excellent weatherproof seal between the lamp and the panel/chassis.
  • Another lamp device is known from DE-A- 3009425 which makes use of a radially projecting flanged part formed at the rear end of an LED. After the LED and a surrounding bush of resilient material have been inserted together into a panel aperture, the LED is then moved backwards relative to the bush so that the flange on the LED expands the bush to hold the bush and LED in position.
  • the present invention seeks to provide a lamp having even better sealing properties while using an modified LED and being cheaper and easier to manufacture than the existing devices.
  • a panel/chassis mounting indicator lamp comprising a first part in the form of a bush of resilient material for insertion, in use, lengthwise into an aperture in a panel/chassis, the bush having a longitudinal through bore and an outwardly extending shoulder at or adjacent one end for limiting the depth of insertion of the bush into the aperture, and a second part in the form of an LED having a solid plastics body which is received, in use, within the bush bore, the outer peripheral surface of the LED body engaging with the bush such as to distort the bush so that it is expanded, on the side of the panel/chassis aperture opposite to that engaged by the shoulder sufficiently to prevent withdrawal of the bush from the chassis aperture and to cause the bush to grip the LED to prevent withdrawal of the LED therefrom, wherein the LED is unmodified, and the outwardly extending shoulder of the bush is formed, so that in use, a portion of the bush will project beyond the aperture on the opposite side of the panel/chassis to that engaged by the shoulder, there
  • the internal projection comprises an annular flange disposed at the end of the bush which projects beyond the panel/chassis aperture.
  • the internal projection comprises a radially inwardly directed shoulder in the bush bore disposed at a position within said portion which, in use, projects beyond the panel/chassis aperture.
  • the bush is formed with an annular flange disposed at the end of the bush which projects beyond the panel/chassis aperture, the flange serving to retain a lens disc within the bush in front of said hemispherical end of the LED.
  • Fig.1 shows a typical LED 110 having a cylindrical body 116, a hemispherical lens portion 118 at one end, an outwardly extending peripheral flange 120 at the other end, and terminal pins 122.
  • the LED 110 can be mounted in an aperture 112 of a panel 113 (Fig.2) without any structural modification whatsoever being required to the LED.
  • the bush 114 comprises a cylindrical body 122, of a resilient plastics material such as PTFE, having at its one end an inwardly directed annular flange 124. Extending from said one end of the bush, the bush is formed with a reduced diameter portion 126 which terminates in a radial shoulder 128. The diameter of the portion 126 is such that it can be received snugly within the panel aperture 112, as shown in Fig.2.
  • the bush has a longitudinal cylindrical bore 115 dimensioned so as to be capable of snugly receiving the cylindrical body 116 of the LED 110.
  • the length of the reduced diameter portion 126 is chosen such that, when the bush has been inserted in the aperture with the shoulder 128 in abutment with the underside of the panel, said one end of the bush, carrying the flange 124, projects beyond the upper surface of the panel to such an extent that, when the LED 110 is inserted from below into the cylindrical bore 115 in the bush (as indicated by arrow A in Figs. 1 and 2), the hemispherical lens portion 118 of the LED eventually engages the flange 124 and urges it radially outwardly whereby to distort the part of the bush extending above the panel aperture sufficient to resist withdrawal of the bush from the panel aperture.
  • Figs. 5 to 7 illustrate a more complex version where there is positioned in the bush a separate lens member 130.
  • the outward distortion is obtained by the provision of an inwardly directed shoulder 132 disposed at a position spaced from the upwardly projecting end of the bush but just beyond the level of the upper surface of the panel 113.
  • the radially inwardly extending flange 124 is still provided but is used to retain the lens disc 130 as shown in Figs. 5 and 7.
  • the flange 124 is shown as being annular and continuous, in other embodiments this flange could be replaced by a plurality of radially inwardly directed fingers spaced around the mouth of the bush 114.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (4)

  1. An einem Paneel bzw. an einem Rahmen befestigte Anzeigeleuchte, umfassend ein erstes Teil in der Form einer Hülse (114) aus einem elastischen Material, die bei Gebrauch der Länge nach in eine Öffnung (112) in ein Paneel bzw. einen Rahmen (113) eingesetzt wird, wobei die Hülse (114) eine in Längsrichtung verlaufende durchgehende Bohrung (115) und einen außen verlaufenden Ansatz (128) an einem oder in der Nähe eines Ende(s) aufweist, um die Tiefe des Einsetzens der Hülse in die Öffnung (112) zu begrenzen, wobei der außen verlaufende Ansatz (128) der Hülse (114) so geformt ist, daß bei Gebrauch ein Teil der Hülse auf der der Seite, an der der Ansatz angreift, gegenüberliegenden Seite des Paneels bzw. des Rahmens (113) über die Öffnung (112) hinaus vorsteht, und ein zweites Teil in der Form einer unveränderten Leuchtdiode (110) mit einem massiven Kunststoffgehäuse (116), die bei Gebrauch in der Hülsenbohrung (115) aufgenommen wird, wobei die äußere Umfangsfläche des Leuchtdiodenkörpers so an der Hülse angreift, daß die Hülse (114) derart verformt wird, daß sie auf der Seite der Öffnung des Paneels bzw. des Rahmens gegenüber der, an der der Ansatz (128) angreift, so erweitert, daß ein Entfernen der Hülse aus der Rahmenöffnung (112) verhindert und bewirkt wird, daß die Hülse die Leuchtdiode (110) ergreift, so daß ein Entfernen der Leuchtdiode aus ihr heraus verhindert wird, dadurch gekennzeichnet, daß in der Hülsenbohrung (115) ein interner Vorsprung (124) ausgebildet ist, in den das halbkugelförmige Ende (118) der Leuchtdiode (110) eingreifen kann, wenn die Letztere in die Hülsenbohrung (115) eingesetzt wird, um auf diese Weise den vorstehenden Teil der Hülse (114) so weit zu verformen, daß ein Entfernen der Hülse aus der Öffnung (112) des Paneels bzw. des Rahmens verhindert wird.
  2. Anzeigeleuchte nach Anspruch 1, wobei der interne Vorsprung einen ringförmigen Flansch (124) aufweist, der an dem Ende der Hülse angeordnet ist, das über die Öffnung (112) des Paneels bzw. des Rahmens hinaus vorsteht.
  3. Anzeigeleuchte nach Anspruch 1, wobei der interne Vorsprung einen radial nach innen gerichteten Ansatz (132) in der Hülsenbohrung aufweist, der sich an einer Position in dem genannten Teil befindet, der bei Gebrauch über die Öffnung (112) des Paneels bzw. des Rahmens hinaus vorsteht.
  4. Anzeigeleuchte nach Anspruch 3, wobei die Hülse über den genannten Ansatz (132) hinaus einen ringförmigen Flansch (134) aufweist, der an dem Ende der Hülse angeordnet ist, das über die Öffnung des Paneels bzw. des Rahmens hinaus vorsteht, wobei der Flansch (134) eine Linsenscheibe (130) in der Hülse (114) vor dem genannten halbkugelförmigen Ende der Leuchtdiode (110) festhält.
EP19910304471 1990-09-08 1991-05-20 An einem Paneel bzw. an einem Rahmen befestigte Anzeigeleuchten Expired - Lifetime EP0474330B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB909019666A GB9019666D0 (en) 1990-09-08 1990-09-08 Panel/chassis mounted indicator lamps
GB9019713 1990-09-08
GB9019666 1990-09-08
GB9019713A GB2247742A (en) 1990-09-08 1990-09-08 Panel/chassis mounted indicator lamps
GB909027045A GB9027045D0 (en) 1990-12-13 1990-12-13 Panel/chassis mounted indicator lamps
GB9027045 1990-12-13

Publications (3)

Publication Number Publication Date
EP0474330A2 EP0474330A2 (de) 1992-03-11
EP0474330A3 EP0474330A3 (en) 1992-04-29
EP0474330B1 true EP0474330B1 (de) 1995-07-19

Family

ID=27265254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910304471 Expired - Lifetime EP0474330B1 (de) 1990-09-08 1991-05-20 An einem Paneel bzw. an einem Rahmen befestigte Anzeigeleuchten

Country Status (2)

Country Link
EP (1) EP0474330B1 (de)
DE (1) DE69111342D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101532647A (zh) * 2009-04-15 2009-09-16 唐加平 一种电路指示灯的定位装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0551175A1 (de) * 1992-01-07 1993-07-14 Oxley Developments Company Limited Fernsehüberwachungssystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887803A (en) * 1974-05-28 1975-06-03 Savage John Jun Light emitting diode device
GB1530304A (en) * 1976-11-29 1978-10-25 Oxley R Sealing devices
DE3009425A1 (de) * 1980-03-12 1982-02-25 Robert Bosch Gmbh, 7000 Stuttgart Anordnung zur halterung eines anzeigeelementes
AT390339B (de) * 1988-06-22 1990-04-25 Fronius Schweissmasch Halterung fuer optoelektronische bauteile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101532647A (zh) * 2009-04-15 2009-09-16 唐加平 一种电路指示灯的定位装置

Also Published As

Publication number Publication date
DE69111342D1 (de) 1995-08-24
EP0474330A2 (de) 1992-03-11
EP0474330A3 (en) 1992-04-29

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