EP2322849A2 - Cover of solid state lighting apparatus - Google Patents

Cover of solid state lighting apparatus Download PDF

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Publication number
EP2322849A2
EP2322849A2 EP10188021A EP10188021A EP2322849A2 EP 2322849 A2 EP2322849 A2 EP 2322849A2 EP 10188021 A EP10188021 A EP 10188021A EP 10188021 A EP10188021 A EP 10188021A EP 2322849 A2 EP2322849 A2 EP 2322849A2
Authority
EP
European Patent Office
Prior art keywords
solid state
state lighting
cover
lighting apparatus
optical portion
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.)
Withdrawn
Application number
EP10188021A
Other languages
German (de)
French (fr)
Other versions
EP2322849A3 (en
Inventor
Tien-Pao Chen
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.)
Foxsemicon Integrated Technology Inc
Original Assignee
Foxsemicon Integrated Technology Inc
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 Foxsemicon Integrated Technology Inc filed Critical Foxsemicon Integrated Technology Inc
Publication of EP2322849A2 publication Critical patent/EP2322849A2/en
Publication of EP2322849A3 publication Critical patent/EP2322849A3/en
Withdrawn legal-status Critical Current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
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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]

Definitions

  • the disclosure relates to illumination technology, and particularly to a cover for a solid state lighting apparatus.
  • LEDs Light emitting diodes'
  • advantages such as high luminosity, low operational voltage, low power consumption, compatibility with integrated circuits, easy driving, long term reliability, and environmental friendliness have promoted their wide use as a light source.
  • light emitting diodes are commonly applied in environmental lighting.
  • the divergence angle of light is larger.
  • LED as a point lighting source requires revised optical design to change the luminous distribution.
  • the luminous distribution of LED commonly is a Lambertian distribution.
  • the Full Width at Half Maximum (FWHM) of the LED is within +60°; such that the Full Width at Half Maximum is 120°.
  • the illumination apparatus using the LED can change the luminous distribution from the Lambertian distribution.
  • FIG. 1 is an exploded view of a solid state lighting apparatus in accordance with a first embodiment.
  • FIG. 2 is an assembled view of the solid state lighting apparatus of FIG. 1 .
  • FIG. 3 is a cross-section of a cover of the solid state lighting apparatus taken along line III-III of FIG. 1 .
  • FIG. 4 is a top view of the cover of FIG. 1 .
  • FIG. 5 is a bottom view of the cover of FIG. 1 .
  • a solid state lighting apparatus 1 includes at least one solid state lighting source 20, a housing 30 and a cover 10.
  • the cover 10 includes at least one optical portion 101.
  • the optical portion 101 can be symmetrical or asymmetrical to adjust the optical field of the solid state lighting apparatus 1.
  • the light emitting surface 1012 of the optical portion 101 can be saddle or bullet shaped.
  • the incident surface 1011 of the optical portion 101 can be an asymmetrical curve or bullet shaped.
  • the optical portion 101 can be a lens mounted on the light emitting surface of the solid state lighting source 20.
  • the light from the solid state lighting source 20 passes through the light incidence surface 1011 and the light emitting surface 1012 of the lens, with the emitting angle and the luminous distribution change according to specific illumination need.
  • the cover 10 is arranged on the housing 30.
  • the cover 10 and the housing 30 are fixed by a plurality of fasteners 50.
  • Each fastener 50 is a C-shaped spring clip having top and bottom arms (not labeled) for respectively engaging with the cover 10 and the housing 30.
  • the cover 10 can provide different luminous distributions for different environments. There is no need to redesign new lighting apparatus and manufacturing costs of the solid state lighting apparatus are minimized.
  • the cover 10 includes at least one optical portion 101 arranged inside the cover 10 formed in one piece.
  • the optical portion 101 includes a light incident surface 1011 and a light emitting surface 1012.
  • the optical portion 101 adjusting the optical field of the solid state light emitting source 20 of the solid state lighting apparatus 1 can be asymmetric or symmetric.
  • the optical portion 101 is an asymmetric lens
  • the luminous distribution of the solid state lighting source 20 is rectangular.
  • the optical portion 101 is a symmetric lens, the luminous distribution of the solid state lighting source 20 is circular.
  • the light from the solid state lighting source 20 passes through the cover 10, which prevents contaminants and pollutants from entering the solid state lighting apparatus 1.
  • the optical portion 101 can be a lens arranged at the light emitting surface of the solid state lighting source 20.
  • the light from the solid state lighting source 20 passes through the lens, which determines the illuminating angle and the luminous distribution.
  • the cover 10 can be formed by plastic injection or thermoset molding, in one piece, reducing manufacturing costs and time required.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

A solid state lighting apparatus (1) includes at least one solid state lighting source (20), a housing (30) and a cover (10). The cover includes at least one optical portion (101). The optical portion (101) adjusts optical field of the solid state lighting sources. The cover (10) can be formed by plastic injection or thermoset molding to integrate with the optical lens.

Description

    1. Technical Field
  • The disclosure relates to illumination technology, and particularly to a cover for a solid state lighting apparatus.
    • 2. Description of the Related Art
  • Light emitting diodes' (LEDs) many advantages, such as high luminosity, low operational voltage, low power consumption, compatibility with integrated circuits, easy driving, long term reliability, and environmental friendliness have promoted their wide use as a light source. Now, light emitting diodes are commonly applied in environmental lighting.
  • Joseph Bielecki et al. in IEEE, 23rd IEEE SEMI-THERM Symposium, "Thermal Considerations for LED Components in an Automotive Lamp." characterize light emitting diodes as one kind of semiconductor device changing current into light of specific wavelength.
  • The divergence angle of light is larger. LED, as a point lighting source requires revised optical design to change the luminous distribution. The luminous distribution of LED commonly is a Lambertian distribution.
  • The Full Width at Half Maximum (FWHM) of the LED is within +60°; such that the Full Width at Half Maximum is 120°. In secondary optical design, such as an optical lens or reflector, the illumination apparatus using the LED can change the luminous distribution from the Lambertian distribution.
  • Nevertheless, when a lens or reflector is fixed, the luminous distribution is correspondingly fixed. Redesign of different lenses or reflectors according to different illumination needs is required, increasing manufacturing costs.
  • What is needed therefore, is a lens module overcoming the described limitations.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present illumination device. Moreover, in the drawing, like reference numerals designate corresponding parts throughout the several views.
  • FIG. 1 is an exploded view of a solid state lighting apparatus in accordance with a first embodiment.
  • FIG. 2 is an assembled view of the solid state lighting apparatus of FIG. 1.
  • FIG. 3 is a cross-section of a cover of the solid state lighting apparatus taken along line III-III of FIG. 1.
  • FIG. 4 is a top view of the cover of FIG. 1.
  • FIG. 5 is a bottom view of the cover of FIG. 1.
    • DETAILED DESCRIPTION
  • Embodiments of the lens module are described in detail here with reference to the drawings.
  • Referring to FIG. 1 and FIG. 2, a solid state lighting apparatus 1 includes at least one solid state lighting source 20, a housing 30 and a cover 10. The cover 10 includes at least one optical portion 101.
  • According to specific illumination need, the optical portion 101 can be symmetrical or asymmetrical to adjust the optical field of the solid state lighting apparatus 1. Referring to FIG. 3, the light emitting surface 1012 of the optical portion 101 can be saddle or bullet shaped. Further, the incident surface 1011 of the optical portion 101 can be an asymmetrical curve or bullet shaped.
  • Referring to FIG. 1 and FIG. 2, the optical portion 101 can be a lens mounted on the light emitting surface of the solid state lighting source 20. The light from the solid state lighting source 20 passes through the light incidence surface 1011 and the light emitting surface 1012 of the lens, with the emitting angle and the luminous distribution change according to specific illumination need.
  • Referring to FIG. 2, the cover 10 is arranged on the housing 30. The cover 10 and the housing 30 are fixed by a plurality of fasteners 50. Each fastener 50 is a C-shaped spring clip having top and bottom arms (not labeled) for respectively engaging with the cover 10 and the housing 30. In this embodiment, by changing covers 10 having different optical portions 101, the cover 10 can provide different luminous distributions for different environments. There is no need to redesign new lighting apparatus and manufacturing costs of the solid state lighting apparatus are minimized.
  • Referring to FIG. 1, the cover 10 includes at least one optical portion 101 arranged inside the cover 10 formed in one piece.
  • Referring to FIG. 3, the optical portion 101 includes a light incident surface 1011 and a light emitting surface 1012.
  • According to illumination needs, the optical portion 101 adjusting the optical field of the solid state light emitting source 20 of the solid state lighting apparatus 1 can be asymmetric or symmetric. When the optical portion 101 is an asymmetric lens, the luminous distribution of the solid state lighting source 20 is rectangular. When the optical portion 101 is a symmetric lens, the luminous distribution of the solid state lighting source 20 is circular.
  • The light from the solid state lighting source 20 passes through the cover 10, which prevents contaminants and pollutants from entering the solid state lighting apparatus 1.
  • The optical portion 101 can be a lens arranged at the light emitting surface of the solid state lighting source 20. The light from the solid state lighting source 20 passes through the lens, which determines the illuminating angle and the luminous distribution.
  • Referring to FIG. 4 and FIG. 5, the cover 10 can be formed by plastic injection or thermoset molding, in one piece, reducing manufacturing costs and time required.
  • While certain embodiments have been described and exemplified above, various other embodiments from the foregoing disclosure will be apparent to those skilled in the art. The disclosure is not limited to the particular embodiments described and exemplified but is capable of considerable variation and modification without departure from the scope of the appended claims.

Claims (12)

  1. A solid state lighting apparatus comprising:
    at least one solid state lighting source, a housing and a cover, the solid state lighting source arranged on the housing, light from the solid state lighting source passing through the cover, wherein the cover includes at least one optical portion,
    the optical portion and the cover are formed in one piece, wherein the optical portion corresponds to and determines the luminous distribution of the solid state lighting source.
  2. The solid state lighting apparatus of claim 1, wherein the optical portion adjusting the optical field of the solid state lighting source is asymmetric.
  3. The solid state lighting apparatus of claim 1, wherein the optical portion is arranged inside the cover.
  4. The solid state lighting apparatus of claim 1, wherein the optical portion adjusting the optical field of the solid state lighting source is symmetric.
  5. The solid state lighting apparatus of claim 1, wherein the optical portion has a saddle-shaped light emitting surface.
  6. The solid state lighting apparatus of claim 1, wherein the optical portion has an asymmetrically curved light incident surface.
  7. The solid state lighting apparatus of claim 1, wherein the optical portion comprises a bullet-shaped light emitting surface.
  8. The solid state lighting apparatus of claim 1, wherein the optical portion comprises a bullet shaped light incident surface.
  9. The solid state lighting apparatus of claim 1, wherein the housing and the cover are fixed together by a plurality of fasteners, each fastener being a C-shaped spring clip having two arms respectively engaging with the cover and the housing.
  10. The solid state lighting apparatus of claim 1, wherein the cover is formed by plastic injection molding.
  11. The solid state lighting apparatus of claim 1, wherein the cover is formed by thermoset molding.
  12. The solid state lighting apparatus of claim 1, wherein the cover prevents contaminants and pollutants from entering the solid state lighting apparatus.
EP10188021A 2009-11-05 2010-10-19 Cover of solid state lighting apparatus Withdrawn EP2322849A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009103093435A CN102052591A (en) 2009-11-05 2009-11-05 Solid lighting lamp

Publications (2)

Publication Number Publication Date
EP2322849A2 true EP2322849A2 (en) 2011-05-18
EP2322849A3 EP2322849A3 (en) 2013-04-03

Family

ID=43558449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10188021A Withdrawn EP2322849A3 (en) 2009-11-05 2010-10-19 Cover of solid state lighting apparatus

Country Status (4)

Country Link
EP (1) EP2322849A3 (en)
JP (1) JP2011100721A (en)
KR (1) KR101194131B1 (en)
CN (1) CN102052591A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592329A1 (en) 2011-11-14 2013-05-15 GEWISS S.p.A. Lighting device with LED modules, particularly for street lighting
ITBO20120060A1 (en) * 2012-02-08 2013-08-09 Calzoni Srl LAMP FOR SURFACE INSTALLATION
EP2626619A3 (en) * 2012-02-08 2013-09-04 Calzoni S.r.l. Surface mounting lamp
ITBO20120572A1 (en) * 2012-10-19 2014-04-20 Calzoni Srl LAMP FOR SURFACE INSTALLATION

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EP2870406A4 (en) * 2012-07-09 2015-06-03 Evolucia Lighting Inc Solid state lighting luminaire with modular refractors
KR101253266B1 (en) * 2012-09-24 2013-04-11 주식회사 월드테크 Led streetlight
JP6171298B2 (en) * 2012-09-28 2017-08-02 岩崎電気株式会社 lighting equipment
JP6045282B2 (en) * 2012-10-10 2016-12-14 株式会社小糸製作所 Road lighting equipment
US20140133163A1 (en) * 2012-11-13 2014-05-15 Osram Gmbh Lighting device, corresponding support and corresponding method
KR101888880B1 (en) * 2016-08-05 2018-08-16 주식회사 오르카코리아 Apparatus and method for detecting defective areas

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1916468A1 (en) * 2006-10-27 2008-04-30 Stanley Electric Co., Ltd. LED lighting fixture

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EP1227458A3 (en) * 2001-01-11 2004-12-22 Dr. techn. Josef Zelisko, Fabrik für Elektrotechnik und Maschinenbau Gesellschaft m.b.H. Display and/or signalling device
JP4038136B2 (en) * 2003-01-13 2008-01-23 シーシーエス株式会社 Spot lighting device using power LED
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JP2008311062A (en) * 2007-06-14 2008-12-25 Toshiba Lighting & Technology Corp Luminaire
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TW201022592A (en) * 2008-12-15 2010-06-16 Create Electronic Optical Co Optical lens and light emitting diode (LED) illuminating device thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1916468A1 (en) * 2006-10-27 2008-04-30 Stanley Electric Co., Ltd. LED lighting fixture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOSEPH BIELECKI ET AL.: "IEEE, 23rd IEEE SEMI-THERM Symposium", THERMAL CONSIDERATIONS FOR LED COMPONENTS IN AN AUTOMOTIVE LAMP

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592329A1 (en) 2011-11-14 2013-05-15 GEWISS S.p.A. Lighting device with LED modules, particularly for street lighting
ITMI20112064A1 (en) * 2011-11-14 2013-05-15 Gewiss Spa MODULAR LED LIGHTING DEVICE, PARTICULARLY FOR ROAD AND SIMILAR LAMPS
ITBO20120060A1 (en) * 2012-02-08 2013-08-09 Calzoni Srl LAMP FOR SURFACE INSTALLATION
EP2626619A3 (en) * 2012-02-08 2013-09-04 Calzoni S.r.l. Surface mounting lamp
ITBO20120572A1 (en) * 2012-10-19 2014-04-20 Calzoni Srl LAMP FOR SURFACE INSTALLATION
US9279578B2 (en) 2012-10-19 2016-03-08 Calzoni S.R.L. Surface mounting lamp

Also Published As

Publication number Publication date
JP2011100721A (en) 2011-05-19
KR101194131B1 (en) 2012-10-25
CN102052591A (en) 2011-05-11
EP2322849A3 (en) 2013-04-03
KR20110049687A (en) 2011-05-12

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