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Light emitting device

A technology for light-emitting equipment and light-emitting diodes, which can be used in mechanical equipment, lighting and heating equipment, light sources, etc., and can solve the problems of complex and expensive manufacturing.

Pending Publication Date: 2021-10-29
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this solution requires a light guide with a complex structure and is therefore complex and expensive to manufacture

Method used

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Embodiment Construction

[0064] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will convey to those skilled in the art fully conveys the scope of the invention.

[0065] figure 1 By way of example is shown a schematic perspective view of a lighting fixture 1 comprising a lighting device 3 with an array of light emitting diodes (LEDs) according to the invention. The LEDs are arranged on a substrate, usually a printed circuit board (PCB). The lighting fixture 1 further comprises a housing 2 housing a light emitting device 3 . The lighting device 3 comprises a transparent cover 4 forming the light exit surface of the lighting fixture 1 . In other embodime...

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Abstract

A light emitting device (3) comprises an array of light emitting diodes (LEDs) (301-317), and the array of LEDs comprises a plurality of LEDs (61-69), a center (31), an perimeter (32) and a first axis (X) extending through the center and transverse to the outer circumferential edge, wherein each LED of the array of LEDs comprises a size and a shape, the plurality of LEDs is arranged on a plurality of lines (L) extending in a direction 5 from a point on the first axis (X) towards the outer circumferential edge (32), two or more LEDs of the plurality of LEDs are arranged on each line, and the two or more LEDs on each line are arranged such that at least one gradient in the size of the LEDs and / or the shape of the LEDs is provided in a direction along said line.

Description

technical field [0001] The invention relates to a lighting device of the type comprising a transparent cover and an array of light emitting diodes (LEDs), said transparent cover forming a light exit window of the lighting device. Background technique [0002] In many lighting applications - such as street lighting as an example - the light exit window of the luminaire is completely transparent so that the individual LEDs in the light source can be easily identified. Transparent covers are often applied to enable beam shaping. A light source consisting of orthogonally arranged LEDs (rows and columns) appears to provide an uncomfortable glare. The regular arrangement of the light sources appears to have a distracting effect, which after experience was found to be undesirable. It seems that people tend to complain about glare and pixilation of LED lamps. [0003] US2014 / 0321155 A1 describes a possible solution, according to which a lighting device comprises a light source de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/08F21Y115/10F21Y105/12
CPCF21S8/086F21W2131/103F21Y2105/12F21Y2113/20F21Y2115/10
Inventor T·范博梅尔R·J·佩特R·A·M·希克梅特
Owner SIGNIFY HLDG BV
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