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Lamp

A lamp head and main reflector technology, applied in the field of lamps, can solve problems such as temperature rise, increase in heat load of circuit units, reduction in heat dissipation characteristics/heat transfer characteristics, etc., to achieve the effect of reducing occlusion

Inactive Publication Date: 2013-06-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, when the LED lamp is miniaturized while keeping the input current (brightness) of the LED as it is, for example, when the cap part is downsized, the heat radiation characteristic / heat transfer characteristic is lowered and the temperature of the cap part rises, which affects the circuit unit. Increased heat load makes it difficult to miniaturize LED lamps while maintaining brightness

Method used

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no. 1 approach

[0050] A first embodiment for carrying out the present invention will be described in detail with reference to the drawings.

[0051] 1. Overall structure

[0052] figure 1 It is a sectional view showing the structure of the LED lamp 1 of the first embodiment, figure 2 It is a plan view of the LED lamp 1 viewed from the side opposite to the base 13 .

[0053]An LED lamp (corresponding to the "lamp" of the present invention) 1 includes an LED module 3 having an LED (light emitting diode) as a light emitting body, a lamp holder 5 on which the LED module 3 is mounted, and the LED module 3 is stored inside via the lamp holder 5 The main reflector 7, the front panel 9 arranged at one end of the main reflector 7, the circuit unit 11 for making the LED emit light, and the lamp holder 13 electrically connected with the circuit unit 11, the circuit unit 11 is covered by the circuit case 15.

[0054] That is, the LED lamp 1 has: a main reflector 7 having an opening 31 at one end and...

no. 2 approach

[0114] In the first embodiment, there is no light concentrating mechanism for concentrating the light emitted from the LED module 3 on the circuit case 15 arranged in front of the LED module 3 (in the direction of light emission), so that the light emitted from the LED module 3 The light is efficiently reflected by the sub-reflecting surface 65 of the circuit case 15 toward the main reflector 7. In the second embodiment, a mode in which a reflector is used as a light-condensing mechanism will be described. In addition, about the same part as the structure demonstrated in 1st Embodiment, the same code|symbol as 1st Embodiment is used.

Embodiment approach 1

[0116] Figure 4 It is a sectional view showing the structure of the LED lamp 201 of the second embodiment 1. FIG.

[0117] The LED lamp 201 of the second embodiment 1 has an LED module 3, a lamp holder 5, a main reflector 7, a front panel 9, a circuit unit 11, a lamp base 13, and a circuit case 15, and is provided with a lamp for emitting light from the LED module 3. The reflector 203 that reflects light toward the circuit case 15 side. In addition, the surface on the side of the LED module 3 in the circuit case 15 becomes the sub-reflective surface 65 .

[0118] Here, the reflector 203 is formed in a cylindrical shape surrounding the sealing body 25 of the LED module 3 . The cylindrical reflector 203 is mounted on the mounting board 21 of the LED module 3 so that the center of the light emitting part of the LED module 3 is located on the central axis.

[0119] The diameter of the reflector 203 increases along the central axis of the reflector 203 (also the optical axis of...

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PUM

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Abstract

A lamp (1) is provided with a funnel-shaped principal reflector (7) having an opening on one end, an LED (23) provided on the principal reflector (7), a socket (13) attached to the other end of the principal reflector (7), and a circuit unit (11) for receiving power through the socket (13) and causing the LED (23) to emit light, wherein: the circuit unit (11) is housed within a circuit case (15) and provided on the opening side of the principal reflector (7) in the direction of light emission from the LED (23); and a secondary reflective surface (65) for reflecting light emitted by the LED (23) toward the reflective surface (35) of the principal reflector (7) is provided on the surface of the circuit case (15).

Description

technical field [0001] The present invention relates to a lamp, in particular to a lamp provided with a reflector and a circuit unit. Background technique [0002] In recent years, an attempt has been made to use a lamp using an LED as a light source as a substitute for a halogen bulb, taking advantage of the practical use of high-intensity LEDs (Patent Document 1). [0003] This LED-based lamp (hereinafter referred to as "LED lamp") that replaces a halogen bulb is the same as a halogen bulb, and has: a horn-shaped reflector with an opening at one end, a plurality of LEDs installed in the reflector, and a The other end has a lamp base part of the lamp base and a circuit unit for receiving power through the lamp base to make the LED emit light, and the circuit unit is stored in the lamp base part. [0004] However, heat is generated when the LED emits light, and electronic parts constituting the circuit unit include parts that are weak in heat load capacity. Therefore, for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21Y101/02
CPCF21V7/0033F21V7/041F21V13/04F21V23/002F21V23/006F21K9/23F21K9/233F21K9/238F21K9/64F21Y2107/10F21Y2115/10
Inventor 矶贝俊明上田泰久杉田和繁永井秀男植本隆在三贵政弘高桥晓良
Owner PANASONIC CORP
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