JP2008186694A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system wherein efficiency of irradiation is good, and heat dissipation capability of a light source is great. <P>SOLUTION: This lighting system has a light source device 11, a flexible tube 12, and a power supply device 13. It has a light source built-in in the inside of the light source device 11, and radiates prescribed light to an object. The light source device 11 is connected to the power supply device 13 by the flexible tube 12, an exhaust fan and an exhaust vent 33 are provided in the power supply device 13, and air in the light source device 11 is exhausted to the outside of the system through the power supply device 13 to cool the light source device 11. An operator can adjust irradiation positions by directly touching the light source device 11, and the light source device 11 can be made compact. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting device.

Although the illumination device is used in various fields, an LED illumination device using LEDs is mainly used in semiconductor inspection and the like.
This LED lighting device is broadly divided to emit light from an LED light source with power supplied from a power source via a power cable, and to emit light with power supplied from a power source as shown in Patent Document 1, as shown in Patent Document 1. There is a transmission irradiation type in which the luminous flux of the LED is transmitted through an optical fiber.

JP 2004-212402 A

However, the direct-light type can efficiently irradiate the light emitted by the LED, but heat generation becomes a problem due to the recent increase in power of the LED element, and it is necessary to enlarge the light source housing in order to improve heat dissipation. . On the other hand, the transmission irradiation type has a drawback that the efficiency of illumination is poor because there is a loss at the time of optical fiber transmission, while the light exit port of the optical fiber can be made compact at a low temperature.
In particular, in an LED spot illumination device used when observing with a microscope, the irradiation position is adjusted by directly touching the light source housing or the light exit port while observing an object to be observed with a microscope. In addition, downsizing that is easy to operate is required.
In the conventional LED spot lighting device, the transmission type is adopted especially for the above-mentioned safety reasons, but the LED spot lighting is low in irradiation efficiency, low in temperature of the light source casing, compact and high in irradiation efficiency. Development of the device was desired.
The object of the present invention is to solve the problems of the prior art.

In order to achieve the above object, an illumination device according to the present invention includes a light source casing provided with a light source that emits light, a power supply casing provided with a power source for the light source, and the light source casing and the power supply casing. It has a basic feature that it has a flexible tube that communicates, and an exhaust device that is provided in the light source casing and exhausts the power source casing, the flexible tube, and the light source casing.

According to the illumination device of the present invention, the irradiation efficiency is good, a bright irradiation surface can be obtained, and the heat radiation capacity of the light source housing can be increased by the flexible tube and the exhaust device,
The temperature rise of the light source casing can be prevented, and the light source casing can be made compact.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, the LED illumination device includes a light source device 11 and a flexible tube 1.
2 and a power supply device 13.
The light source device 11 has a built-in light source and irradiates a target with predetermined light. The light source device 11 and the power supply device 13 are connected by the flexible tube 12, and supply of power from the power supply device 13 to the light source device 11 and exhaust from the light source device 11 to the outside of the system via the power supply device 13 are performed. ing.

The configuration of the light source device 11 will be described with reference to FIG. The light source device 11 has a light source casing 21, and a power LED 22 that is a light source is provided inside the light source casing 21.
The power LED 22 is mounted on a substrate 23 made of a heat conductive material such as aluminum,
A heat sink 24 is provided on the back surface of the substrate 23.
A lens row 25 is disposed in front of the power LED 22 (on the right side in FIG. 2), and is configured to collect light emitted from the power LED 22 at a predetermined distance.
The lens array 25 is positioned by a lens housing 26 and the periphery is fixed by a lid 27. With the above configuration, the light from the power LED 22 is irradiated to a predetermined object through the lens array 25.

The light source casing 21 is provided with an air inlet 28. As will be described later, the power supply 1
3 is provided with an exhaust fan 32, and an intake port 28 is disposed in order to take outside air into the light source casing 21 by the suction force of the exhaust fan 32. Inlet 28
Is preferably arranged at a position where the sucked air flows in contact with the heat sink 24 on the back surface of the substrate 23, and this arrangement provides a great heat dissipation effect.
Note that the air inlet 28 can also be disposed in front of the power LED 22, and this arrangement can also dissipate heat from the lens array 25, further increasing the heat dissipation effect. However, care should be taken because dust or the like adheres to the lens array 25. Cost.

The flexible tube 12 is connected to the connection portion 29 at the rear of the light source casing 21. The end portion of the flexible tube 12 is fitted inside the connection portion 29 and bonded and fixed to the inner side surface of the connection portion 29. Flexible tube 12 and connection 2
9 is bonded and sealed to prevent air from leaking, and the exhaust heat effect by the exhaust fan 32 is enhanced.
On the outer peripheral surface of the connecting portion 29, a bellows-like groove is formed so as to maintain flexibility and improve operability.

A power cable 15 is wired in the tube of the flexible tube 12 and configured to supply power from the power supply device 13 to the power LED 22.
Since the flexible tube 12 serves as an exhaust duct by the exhaust fan 32, it is desirable to use a tube size that has good airtightness and can secure a sufficient space after the power cable 15 is wired. In the case of an LED spot illumination device for microscopic observation, a flexible tube having a structure that bends flexibly when a force is applied by hand and maintains its posture when the hand is released is desirable.

As shown in FIG. 3, the power supply device 13 has a power supply housing 30, and the other end of the flexible tube 12 is connected to the power supply device 13 at a connection portion 35 provided in the power supply housing 30. Similarly, the connection portion 35 is hermetically sealed between the flexible tube 12 and the power supply housing 30 so that air does not leak.

A power supply board 31 for supplying power to the power LED 22 is provided inside the power supply housing 30 of the power supply device 13, and the power cable 15 is connected thereto. As described above, the exhaust fan 32 and the exhaust port 33 are provided, and the air inside the power supply housing 30, the flexible tube 12, and the light source housing 21 is discharged to the outside of the power supply housing 30. Yes. By this exhaust, a flow of heat radiation air is generated inside the power supply substrate 31 and the light source casing 21 to enhance the cooling effect.
The exhaust fan 32 may be provided in the connection portion 35 as shown in FIG. 4 so as to directly exhaust the flexible tube 12. In this configuration, the light source device 1
1 exhaust is strengthened. Further, in this embodiment, the exhaust port 33 ′ can be provided at an arbitrary location, and is provided at a side portion of the power supply housing 30.

In the above configuration, since the power LED 22 directly irradiates the object with light, the irradiation efficiency is high, and the air is discharged from the heat sink 24 by the exhaust fan 32 and the intake port 28.
Through the flexible tube 12, through the power supply board 31 of the power supply housing 30,
Since the exhaust fan 32 exhausts the outside of the power supply housing 30, the heat sink 24
The cooling effect is high, and the temperature rise due to the power LED 22 can be prevented. Moreover, the cooling effect of the power supply substrate 31 is also obtained.

For this reason, the operator can directly touch the light source casing 21 to adjust the irradiation position, thereby improving operability. Further, the light source casing 21 can be made compact.

Schematic which shows one Embodiment of this invention. Explanatory drawing of the light source device 11 of one Embodiment of this invention. Explanatory drawing of the power supply device 13 of one Embodiment of this invention. Explanatory drawing of other embodiment of the power supply device 13 of this invention.

Explanation of symbols

11: light source device, 12: flexible tube, 13: power supply device, 15: power supply cable, 21: light source casing, 22: power LED, 23: substrate, 24: heat sink, 25: lens array, 26: lens housing, 27 : Lid, 28: Inlet, 30:
Power supply casing, 31: power supply board, 32: exhaust fan, 33: exhaust port, 35: connection part.

Claims (1)

A light source housing having a light source for emitting light;
A power supply housing having a power source for the light source;
A flexible tube communicating the light source casing and the power supply casing;
An exhaust device provided in the light source casing, for exhausting the power source casing, the flexible tube, and the light source casing;
A lighting device comprising:

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