CA2190320A1 - Light unit - Google Patents

Light unit

Info

Publication number
CA2190320A1
CA2190320A1 CA002190320A CA2190320A CA2190320A1 CA 2190320 A1 CA2190320 A1 CA 2190320A1 CA 002190320 A CA002190320 A CA 002190320A CA 2190320 A CA2190320 A CA 2190320A CA 2190320 A1 CA2190320 A1 CA 2190320A1
Authority
CA
Canada
Prior art keywords
light
panel
pipe
side surfaces
unit
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.)
Granted
Application number
CA002190320A
Other languages
French (fr)
Other versions
CA2190320C (en
Inventor
Antonio Michael Derose
Robert Gary Attwood
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002190320A priority Critical patent/CA2190320C/en
Publication of CA2190320A1 publication Critical patent/CA2190320A1/en
Application granted granted Critical
Publication of CA2190320C publication Critical patent/CA2190320C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

A light unit for illuminating signs has a panel having a first surface and an opposite second surface. A plurality of light pipes of transparent material is integrally formed on one or both surfaces of the panel. Each light pipe has a first end to accommodate a LED, a second narrower end and side surfaces including a bottom surface and a top surface, the top and bottom side surfaces being tapered relative to each other from the first end to the second end. A light source is mounted at the first end of each light pipe such as to direct a beam of light into the light pipe towards the second end of the pipe. Light emitted by the light source may egress on one or both sides of the panel. The unit has an increased light efficiency and a reduced use of material compared to prior art designs.
CA002190320A 1996-11-14 1996-11-14 Light unit Expired - Fee Related CA2190320C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002190320A CA2190320C (en) 1996-11-14 1996-11-14 Light unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002190320A CA2190320C (en) 1996-11-14 1996-11-14 Light unit

Publications (2)

Publication Number Publication Date
CA2190320A1 true CA2190320A1 (en) 1998-05-14
CA2190320C CA2190320C (en) 2006-04-04

Family

ID=4159253

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002190320A Expired - Fee Related CA2190320C (en) 1996-11-14 1996-11-14 Light unit

Country Status (1)

Country Link
CA (1) CA2190320C (en)

Also Published As

Publication number Publication date
CA2190320C (en) 2006-04-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20121114