Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Light-emitting device and illumination apparatus

一种发光装置、发光元件的技术，应用在照明装置、照明装置的零部件、电致发光光源等方向，达到紧凑且低价格化、防止闪烁的效果

Inactive Publication Date: 2010-10-27
TOSHIBA LIGHTING & TECH CORP +1
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to overcome the defects existing in the existing light-emitting devices and lighting devices, and provide a light-emitting device and lighting device with a new structure. The technical problem to be solved is to make it able to reliably remove the influence, and thus more suitable for practical

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light-emitting device and illumination apparatus
  • Light-emitting device and illumination apparatus
  • Light-emitting device and illumination apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0078] First, the lighting device of the present invention will be briefly described. exist figure 1 as well as figure 2 Among them, 1 is the frame body of the device body, and the frame body 1 is made of aluminum die-casting (die-cast), and has a cylindrical shape with both ends open. The housing 1 is vertically divided into three by partition members 1 a and 1 b , and a space between the lower opening and the partition member 1 a is formed in the light source unit 2 . In this light source part 2, several LED2a and reflector 2b which are semiconductor light emitting elements are provided. The some LED2a is arrange|positioned at equal intervals along the circumferential direction of the disk-shaped wiring board 2c provided in the lower surface of the partition member 1a, and is mounted.

[0079] A space between the partition members 1 a and 1 b of the frame body 1 is formed in the power source compartment 3 . In the power supply chamber 3, a wiring board 3a is disposed o...

Deformed example 1

[0100] Figure 6 A modified example of the LED module described in the first embodiment is shown.

[0101] In this case, the LED module 31 is configured by connecting a plurality of (six in the illustrated example) LED elements 311a to 311f in series, and connecting the series circuit between the positive and negative lines 31a and 31b output by the DC power supply. First bypass capacitors 312a to 312f are connected in parallel to these LED elements 311a to 311f, respectively. Furthermore, the second bypass capacitor 313a is connected in parallel to the series circuit of the LED elements 311b to 311f, the second bypass capacitor 313b is connected in parallel to the series circuit of the LED elements 311c to 311f, and the LED elements 311e to 311f are connected in parallel. The second bypass capacitor 313c is connected in parallel to the series circuit. These second bypass capacitors 313a, 313b, and 313c can make the connection points B1, C1, and D1 of the series circuit of t...

Deformed example 2

[0104] Figure 7 Another modified example of the LED module described in the first embodiment is shown.

[0105] At this time, the LED module 32 is as follows Figure 7As shown, a plurality of (six in the illustrated example) LED elements 321a to 321f are connected in series, and the series circuit is connected between the positive and negative lines 32a and 32b of the DC power output. First bypass capacitors 322a to 322f are connected in parallel to these LED elements 311a to 311f, respectively. Furthermore, the second bypass capacitor 323a is connected in parallel to the series circuit of the LED elements 321b to 321e, and the second bypass capacitor 323b is connected in parallel to the series circuit of the LED elements 321d and 321e. These second bypass capacitors 323a and 323b can make each connection point B2 of the series circuit of the LED elements 321a to 321f when the negative side line 32b of the LED elements 321a to 321f is set as the ground point A2 and this gro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A light-emitting device and an illumination apparatus are disclosed. A plurality of LED elements (91) are connected in series between positive and negative lines (9a and 9b), and first bypass capacitor (92) is connected in parallel to the LED elements respectively. Each series circuit of a predetermined number of LED elements is connected in parallel to second bypass capacitors (93a, 93b and 93c). As a result, with the negative power line (9b) set as a grounding point (A), the AC impedance at connection points (B, C, D) of the series circuit of the LED elements (91a to 911) against the ground is reduced. Thus, the erroneous lighting or ''flicker'' of each LED which otherwise might be caused by an external noise is prevented.

Description

technical field [0001] The present invention relates to a light emitting device and an illuminating device using a semiconductor light emitting element such as a light emitting diode (LED (light-emitting diode) element) as a light source. Background technique [0002] Conventionally, among lighting devices, there is a lighting device in which a plurality of LED elements are connected in series and parallel as shown in Patent Document 1, and used as a light emitting device. Moreover, in lighting installations, such as Figure 17 As shown, a lighting device including a power supply circuit 101 and an LED module (module) 102 as a light emitting device is provided in a frame body 100 of the device body. At this time, the power supply circuit 101 is connected to a commercial power supply 104 via a power switch 103, and in the state where the power switch 103 is turned on (on), the switching operation of a switching element not shown in the figure controls the power supply of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V23/00H05B37/00F21Y101/02H05B44/00
CPCH05B33/0821H05B33/0803H05B45/40H05B45/38H05B45/59
Inventor 大武宽和平松拓朗寺坂博志西家充彦中岛启道鎌田征彦
Owner TOSHIBA LIGHTING & TECH CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com