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Light-emitting device and related light source system

A technology of a light-emitting device and a light-emitting element, which is applied in the field of lighting and display, can solve the problems of high cost, large thermal resistance, unfavorable heat dissipation of LED lamps, etc., and achieve the effect of improving uniformity

Active Publication Date: 2013-06-12
YLX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of using a multi-layer PCB board is high, and the thermal resistance is large, which is not conducive to the heat dissipation of the LED lamp, and the process is difficult

Method used

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  • Light-emitting device and related light source system
  • Light-emitting device and related light source system
  • Light-emitting device and related light source system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 2A , Figure 2A It is a structural schematic diagram of an embodiment of the light emitting device in the embodiment of the present invention. Such as Figure 2A As shown, the light emitting device includes a PCB board 105 and a light emitting element group 103 arranged on one side of the PCB board 105 . The light-emitting element group includes light-emitting elements of two different colors. In this embodiment, the light-emitting elements of two different colors are blue LEDs and yellow LEDs.

[0033] Such as Figure 2B as shown, Figure 2B yes Figure 2A A schematic diagram of the arrangement of the light-emitting element groups in the light-emitting device shown. The light-emitting element group 103 is formed by at least two strings of light-emitting elements. In this embodiment, each string of light-emitting elements on the PCB is arranged in a straight line, and different strings are arranged in parallel to form an array. Wherein the same string...

Embodiment 3

[0064] see Figure 11 , Figure 11 It is a schematic diagram of another embodiment of the light emitting device in the embodiment of the present invention. Different from the above embodiments, in this embodiment, the light-emitting element groups of the PCB board are arranged in multiple concentric rings, wherein each ring is a string of LEDs. Compared with the above embodiments, the arrangement of the light-emitting element groups in this embodiment makes the light beam emitted by the light-emitting device circular, so as to better match the shape of the lens.

[0065] Preferably, among the light emitting elements located on the same circle, at least part of any adjacent two light emitting elements have different colors.

[0066] It is easy to understand that, in this embodiment, the light-emitting element groups of the PCB board may not be arranged in a plurality of concentric rings, but in a plurality of concentric polygons, wherein each polygon is a string of LEDs, whic...

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Abstract

The embodiment of the invention discloses a light-emitting device, which comprises a PCB (Printed Circuit Board) and a light-emitting element group on the PCB, and is characterized in that the light-emitting element group on the PCB is composed of at least two strings of light-emitting elements in configuration, wherein at least part of the light-emitting elements in continuous arrangement in each string comprise the light-emitting elements of two colors only; and among the at least part of the light-emitting elements in continuous arrangement in the string, at least one light-emitting element of a second color is arranged on each of two sides of at least one light-emitting element of a first color, the direction pointed by the anode connecting piece of each of the light-emitting elements of the same color towards the cathode connecting piece of the light-emitting element is consistent with the trend of the string, moreover, an arrangement wire for connecting the light-emitting elements of the first color in series is located at one side of the string, and the arrangement wire for connecting the light-emitting elements of the second color in series is located at the other side of the string. The invention provides the light-emitting device which is convenient to wire on the PCB.

Description

technical field [0001] The invention relates to the technical field of illumination and display, in particular to a light emitting device and a related projection system. Background technique [0002] In the existing centralized packaging structure of multiple LED (Light Emitting Diode, light-emitting diode) chips, it is more common to combine R (Red, red), G (Green, green), and B (Blue, blue) three-color chips together. package, and adjust the color of the LED light by individually controlling the current of the red, green and blue chips. Since LEDs need to be driven by a constant current, the LEDs need to be connected in series. The currents of LEDs of different colors need to be controlled separately, so LEDs of different colors need to be connected in series. In order to uniformly emit light from the LED lamp, in practical applications, LED lamps of different colors are mixed and arranged on a PCB (Printed Circuit Board, printed circuit board) board. In this way, cros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K99/00F21K9/00F21V23/00F21Y115/10F21Y115/30H05B44/00
Inventor 杨佳翼
Owner YLX INC
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