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Lighting device

A technology for lighting devices and radiators, applied in lighting devices, lighting and heating equipment, light sources, etc., can solve problems such as low efficiency

Active Publication Date: 2013-10-23
HOTALUX LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the LED lamp with the structure of the above-mentioned Patent Document 1, the light that should go upward (in the direction of light emission) in the lens is guided to the window portion (hole) direction of the side portion, so there is a concern that the efficiency may be poor.
In addition, in the LED lamps with the structures of the above-mentioned patent documents, it is necessary to provide holes or slits on the heat sink and the frame.

Method used

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Examples

Experimental program
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Embodiment approach 1

[0024] The lighting device of the present embodiment is an example of a bulb-type LED lamp used in place of a halogen bulb. figure 1 The structure of the bulb-type LED lamp used for replacing a halogen bulb in this embodiment is shown. figure 1 (a) is a perspective view showing the structure of the bulb-type LED lamp, figure 1 (b) is figure 1 The cross-sectional view of the above-mentioned light bulb type LED lamp shown in (a) to I-I direction observation, figure 1 (c) is figure 1 (a) The sectional drawing seen from II-II direction of the said light bulb type LED lamp shown. figure 2 The structure of the heat sink in the above-mentioned bulb-type LED lamp is shown. figure 2 (a) is a side view showing the structure of the radiator, figure 2 (b) is a top view showing the structure of the radiator, figure 2 (c) is figure 2 The cross-sectional view of the above-mentioned radiator shown in (b) viewed from the III-III direction, figure 2 (d) is figure 2 A cross-secti...

Embodiment approach 2

[0035] The lighting device of the present embodiment is an example of a bulb-type LED lamp used in place of a halogen bulb. Figure 4 The structure of the bulb-type LED lamp used for replacing a halogen bulb in this embodiment is shown. Figure 4 (a) is a side view showing the structure of the heat sink in the bulb-type LED lamp, Figure 4 (b) is a plan view showing the structure of the heat sink in the bulb-type LED lamp, Figure 4 (c) is a perspective view showing the structure of the bulb-type LED lamp, Figure 4 (d) is Figure 4 (c) The cross-sectional view seen from VI-VI direction of the said light bulb type LED lamp shown.

[0036] Such as Figure 4 As shown, the bulb-type LED lamp 20 of this embodiment includes a heat sink 22 instead of the heat sink 12, and has the same Figure 1~3 The bulb-type LED lamp 10 shown has the same structure.

[0037] The heat sink 22 has the same structure as the heat sink 12 except that a slit 224 is provided instead of the groove p...

Embodiment approach 3

[0042] The lighting device of the present embodiment is an example of a bulb-type LED lamp used in place of a halogen bulb. Figure 5 The structure of the bulb-type LED lamp used for replacing a halogen bulb in this embodiment is shown. Figure 5 (a) a perspective view showing the structure of the heat sink in the above bulb-type LED lamp, Figure 5 (b) is a perspective view showing the structure of the lens and the light guide in the bulb-type LED lamp, Figure 5 (c) is a perspective view showing the structure of the bulb-type LED lamp, Figure 5 (d) is Figure 5 (c) The cross-sectional view seen from the VII-VII direction of the said light bulb type LED lamp shown.

[0043] Such as Figure 5 As shown, the bulb-type LED lamp 30 of this embodiment includes an LED element 11 , a heat sink 32 , a lens 13 , and a light guide 34 as main components. The heat sink 32 has a bottomed cylindrical shape having a bottom 321 and a side wall 322 , and has an upper opening (opening 323...

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Abstract

Provided is a lighting device used to take the place of a halogen bulb, and the device does not reduce luminous efficiency and gives out light from a side of a lamp like the halogen bulb. The lighting device (10) is characterized by comprising a light-emitting component (11), a radiator (12), a lens (13), and a light guiding body (14). The radiator (12) has a bottom and is in a cylindrical shape. The light-emitting component (11) is configured on a bottom (121) in the radiator (12). The lens (13) is configured on an opening portion (123) of the radiator (12). The light guiding body (14) is configured on the periphery of the radiator (12) and is configured that an end of the opening portion (123) side of the light guiding body (14) contacts with peripheral part (132) of the lens (13).

Description

technical field [0001] The invention relates to a lighting device. Background technique [0002] As lighting devices, halogen bulbs are widely used. In recent years, also in the field of lighting, in order to save power and prolong the life of light bulbs, research has been conducted on the use of energy-saving light bulbs such as LED lights instead of halogen light bulbs. The reflective material of the halogen bulb is glass, so the reflected part also emits light due to the light passing through the reflective film. However, the bulb-type LED lamp used as a substitute for the halogen bulb uses a metal heat sink in a portion comparable to the light reflection of the halogen bulb, and thus does not transmit light. Therefore, in the bulb-type LED lamp, light is emitted only from the front surface, and light emission from the side cannot be obtained like a halogen bulb. Therefore, it has been studied to provide a window on the side wall of the heat sink for emitting light le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21Y101/02
Inventor 石川孝
Owner HOTALUX LTD
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