EP2725288A2 - Lampe avec un éclairage uniforme d'une surface - Google Patents

Lampe avec un éclairage uniforme d'une surface Download PDF

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Publication number
EP2725288A2
EP2725288A2 EP13172712.5A EP13172712A EP2725288A2 EP 2725288 A2 EP2725288 A2 EP 2725288A2 EP 13172712 A EP13172712 A EP 13172712A EP 2725288 A2 EP2725288 A2 EP 2725288A2
Authority
EP
European Patent Office
Prior art keywords
light
lamp
module
lens
illuminated area
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Withdrawn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
EP13172712.5A
Other languages
German (de)
English (en)
Other versions
EP2725288A3 (fr
Inventor
Fa-wei ZHANG
Tao-Lin Chu
Din-I Wang
Chen Zhang
Wanjiong Lin
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.)
Lin Wangjiong
Original Assignee
Lin Wangjiong
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 CN2012104414219A external-priority patent/CN103133919A/zh
Application filed by Lin Wangjiong filed Critical Lin Wangjiong
Publication of EP2725288A2 publication Critical patent/EP2725288A2/fr
Publication of EP2725288A3 publication Critical patent/EP2725288A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21Y2111/00—Light sources of a form not covered by groups F21Y2101/00-F21Y2107/00
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • 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 electrical lighting devices, and more particularly to a lamp using at least one single-chip or multi-chip light-emitting-diode ("LED”), and creating a highly uniform illumination pattern.
  • LED light-emitting-diode
  • the popular halogen apparatus presents the following drawbacks, such as relatively high power consumption, inefficiency of light dispersion due to the placement of its metal shield in the line sight of the halogen bulb, and its limited effectiveness in preventing glare from the halogen bulb.
  • FIG. 1 shows a traditional light illumination system.
  • the light illumination system includes an illuminated area 1, and a LED light module 2 positioned beside the illuminated area 1.
  • the LED light module 2 has a light emitting surface 3 and light 4 emitted forward of the light emitting surface 3 and illuminating the illuminated area 1.
  • part of the light 4 illuminates the illuminated area 1 which is closer to the LED light module 2 and the other illuminates the illuminated area 1 which is farther to the LED light module 2. Since the performance of the above illumination is inevitable, part of the light 4, which illuminates the illuminate area 1 and is farther to the LED light module 2, has more attenuation than the other which illuminates the illuminate area 1 and is closer to the LED light module 2. However, the light 4 emitted from the light emitting surface 3 has same initial light intensity. As a result, the illumination value of the illuminated area 2 varies with the distance between the illumination area 1 and the LED light module 2. Examples of some applications of the light illumination system include exhibition hall, showcase, and so on. These new applications require different optical designs. In particular these applications require uniform illumination in the illumination area 2 for improving the sense of quality of the showed products to people.
  • FIG. 1 is a light path view of a light illumination system in the prior art.
  • FIG. 2 is an exploded view of a lamp with uniform illumination pattern in accordance with one embodiment of the disclosure.
  • FIG. 3 is a section view of the lamp with uniform illumination pattern of FIG. 1 .
  • FIG. 4 is a light path view of the lamp with uniform illumination pattern of FIG. 1 .
  • the lamp 100 includes a base 10, a transparent cover 11 clamped to the base 10, at least a light module 12 disposed on the base 10, at least a lens module 13 mounted on the light module 12, two end caps 14 respectively disposed on two end of the base 10, and two fits 15 respectively disposed on outer side of the two end caps 14.
  • the base 10 may be made of metal material.
  • the base 10 is made of aluminum and is contributed to heat dissipation while the light module 12 generates much heat during work.
  • the base 10 has a U shape or U-liked shape and is integrately molded.
  • the base 10 includes at least a light module location 101, and two clamping edges 102 extended from two sides of the base 10.
  • the light module location 101 is arranged between two sides of the base 10 like a bridge and used to mount the light module 12. Since the light module 12 may have much, the light module location 101 should have same quantity with the light module 12 accordingly.
  • the light module 12 includes at least two sets of light sources 121, and at least two PCBs (Printed Circuit Board) 122 for mounting the light sources 121.
  • the light sources 121 can be LEDs, or some traditional lamp, such as incandescent lighting. In the present embodiment, the light sources 121 are LEDs.
  • the at least two sets of light sources 121 have different light intensity, that is to say, one has stronger light intensity than the other. Understandably, the light module 12 includes many sets of light sources 121, such as three or four. As shown in FIG. 2 , each of dot boxes stands for one light module 12. In the present embodiment, each of the light module 12 has two sets of light sources 121 shown in FIG. 2 .
  • the light module 12 includes many light sources 121
  • length in radial direction of the lamp 100 may have greater value than that shown in FIG. 2 .
  • the light sources 121 must be arranged in order of light intensity and must not be arranged at random. Two extension cords of two optical axes of any two sets of light sources 121 have one crossover point. As a result, the at least two sets of light sources 121 illuminate different position of an illuminated area.
  • the lamp 100 may have strip shape, the at least two sets of light sources 121 of the light module 12 should be arranged along the radial direction of the lamp 100 or the base 10.
  • the lamp 100 may include a plurality of light modules 12, the plurality of light modules 12 may be arranged on the base 10 along circumference axial direction of the lamp 100.
  • the at least two light sources 121 are arranged in accordance with light distribution, such as shoulder by shoulder or in staggered form.
  • connection between two optical axis of any two light sources 121 is perpendicular to the circumference axis of the lamp 100.
  • connection between two optical axis of any two light sources 121 has an acute angle or an obtuse angle with the circumference axis of the lamp 100
  • the at least two light sources 121 are arranged in staggered form.
  • a plurality of light sources 121 which has same light intensity, are disposed on one PCB 122, which contribute to improve convenience, generality, and interchangeability in assembly and manufacture.
  • the illumination pattern of the illumination area which is formed by light emitted from forward of the light module 12, is continuous or overlapped partly.
  • the PCBs 122 are well known by the people in the art and have some circuits and electronic components assembled thereon, such as diode, transistor, and so on, for providing rated current or control signal to the light sources 121.
  • the two end caps 14 are fixed on the two ends of the base 10 via some fasteners such as screws and are configured to form a closed receiver with the base 10 and the transparent cover 11 together for protecting the light module 12 and the lens module 13.
  • the fits 15 are configured for mounting the lamp 100 onto the illuminated area. Need to explain that drawings only show one end cap 14 and one fit 15 mounted on one end of the lamp 100 because of the limitation of paper.
  • light emitted from the light source 121 with less light intensity must illuminate the illuminated area which is closer to the light module12, while light emitted from the light source 121 with greater light intensity illuminate the illuminated area which is farther to the light module 12. Therefore, although the light emitted from the light source 121 with greater light intensity may have greater attenuation than the light emitted from the light source 121 with less light intensity as they illuminate the illuminated area which is farther to the light module 12, light emitted from the light source 121, which is father to the illuminated are, can make up the intensity losses of attenuation since light emitted from the light source 121 which is father to the illuminated area has greater light intensity.
  • the illumination pattern which is closer to the light module 12 has same luminance with the illumination pattern which is father to the light module 12. That is to say, the lamp 100 have uniform illumination pattern. Understandably, the illuminated area along radial direction and circumference axis direction of the lamp 100 can be increased by assembling more light modules 12 on the lamp 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP13172712.5A 2012-10-28 2013-06-19 Lampe avec un éclairage uniforme d'une surface Withdrawn EP2725288A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104414219A CN103133919A (zh) 2011-11-30 2012-10-28 一种照度均匀的灯具

Publications (2)

Publication Number Publication Date
EP2725288A2 true EP2725288A2 (fr) 2014-04-30
EP2725288A3 EP2725288A3 (fr) 2015-02-18

Family

ID=48795399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13172712.5A Withdrawn EP2725288A3 (fr) 2012-10-28 2013-06-19 Lampe avec un éclairage uniforme d'une surface

Country Status (1)

Country Link
EP (1) EP2725288A3 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011003261U1 (de) * 2011-02-25 2011-04-28 Hess Verwaltungs-Gmbh Leuchteneinsatz, insbesondere für eine Bodenleuchte
CN102418884A (zh) * 2011-11-30 2012-04-18 林万炯 一种照度均匀的照明灯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
EP2725288A3 (fr) 2015-02-18

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