JPH0927213A - Power source device for lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and low-cost power source device with which emitted light quantity will not be deteriorated for a long period. SOLUTION: A lamp house is composed of a head part 10, a main body part 20, and a base part 30, a xenon lamp 40 is assembled in a through hole 12 in the head part 10, a trigger socket 50 is assembled in the main body part 20, and a cooling fan 60 is assembled in the base part 30. Because through holes 13A-H in the head part 10, an inner space 24 in the main body part 20, and an inner space 33 in the base part 30 are communicating with each other, as the cooling fan 60 is driven, cooling air flows inside the lamp house without getting in contact with an output window 43 in the xenon lamp 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse lighting type light source device, and more particularly to a light source device using a xenon flash lamp.

[0002]

2. Description of the Related Art A light source such as a xenon lamp generates heat as it emits light, and a DC lighting type xenon lamp device having a particularly large amount of heat is conventionally disclosed, for example, in Japanese Examined Patent Publication No. 4-80365 (Japanese Patent Laid-Open No. 59-14838). Such heat dissipation technology is adopted. That is, a cooling fan is attached to the xenon lamp,
Cooling air is ventilated near the xenon lamp and heat sink to prevent it from becoming hot due to so-called air cooling.

On the other hand, the pulse-lighting type xenon lamp device generates less heat than the DC-lighting type device, so no special cooling system is adopted, and the cooling air from the cooling fan is directly applied to the xenon lamp itself. Was common.

[0004]

Therefore, in the conventional pulse lighting type light source device, when dust, oil particles, etc. contained in the cooling air adhere to the lamp, particularly when they adhere to the light emission window of the lamp. However, there is a problem that the amount of emitted light decreases.

Further, when the cooling technology developed for the DC lighting type is adopted for the pulse lighting type light source device, the structure becomes complicated and large, and it is possible to realize a handy lighting device by housing it in a case (housing). It was difficult.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pulse lighting type light source device which has a simple structure in which dust or the like does not adhere to the light emitting window of the lamp due to the cooling air.

[0007]

A light source device according to the present invention includes a lamp, a trigger socket having a trigger circuit for lighting the lamp in pulses, a cooling fan for cooling the lamp and the trigger socket, a lamp, a trigger socket, and With a lamp house that houses a cooling fan inside,
The lamp house has a through hole in which a side tube orthogonal to the light emission window of the lamp and which is in surface contact with the inner wall surface is provided at a substantially central portion in the axial direction of the lamp house, and the axis line is provided around the through hole. A head portion having a ventilation hole penetrating in the direction, a head portion detachably attached to one end side and holding a trigger socket inside, and a body portion forming an internal space communicating with the ventilation hole around the trigger socket, A base portion that is detachably attached to the other end of the main body portion, holds a cooling fan inside, and forms an internal space that communicates the outside air with the internal space of the main body portion via the cooling fan. To do.

According to the present invention, since the lamp is in surface contact with the head portion in the through hole and the ventilation hole is formed around the through hole, the lamp does not receive cooling air directly and the head portion does not receive the cooling air. It is indirectly cooled by air through the material. Therefore, dust or the like contained in the cooling air does not adhere to the light exit window of the lamp. Further, since the vent hole communicates with the internal space of the main body and the trigger socket is held therein, not only the lamp but also the trigger socket is cooled at the same time.

On the other hand, in the pulse lighting type light source device, a high voltage of several hundred to several thousand and several hundred volts is constantly generated in the trigger circuit of the trigger socket, and therefore the trigger socket is arranged close to the lamp. Is desired. According to the present invention, the lamp is held by the head portion, the trigger socket is held by the main body portion, and the head portion is attached to one end side of the main body portion. The external terminal of the lamp and the external terminal of the trigger socket can be directly connected.

Further, in the present invention, the cooling fan is held by the base portion, and the base portion is attached to the other end side of the main body portion, so that the lamp house including the head portion, the main body portion and the base portion is integrally formed. Therefore, it is possible to realize a compact structure in which the lamp, the trigger socket, and the cooling fan are arranged and held in the axial direction. Further, since the head portion, the main body portion and the base portion are detachably attached to each other, there is an effect that parts can be easily assembled and a defective part can be easily replaced.

[0011]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a vertical sectional view of a light source device using a xenon flash lamp, and FIG. 2 is an exploded perspective view (a part of which is shown in section).

As shown in the figure, the cylindrical lamp house is composed of a head portion 10, a main body portion 20 and a base portion 30, which are integrated by screw connection. That is, the head portion 10 and the main body portion 20 are detachably screwed by the female screw portion 11 formed on the inner surface of the rear end portion of the head portion 10 and the male screw portion 21A formed on the inner surface of the front end portion of the main body portion 20. A male screw portion 21 formed on the outer surface of the rear end portion of the main body portion 20.
B and the female screw portion 3 formed on the inner surface of the front end portion of the base portion 30.
1, the main body portion 20 and the base portion 30 are detachably screwed together. The head unit 10 houses the xenon lamp 40, the main body unit 20 houses the trigger socket 50, and the base unit 30 houses the cooling fan 60.

As shown in detail in FIG. 3, the head portion 1
A through hole 12 having a circular cross section is formed in the center of 0 in the axial direction, and a female screw portion 12A for screwing an end portion (connector) of an optical fiber bundle (not shown) is formed on the front end side thereof. There is. Further, around the through hole 12, eight ventilation holes 13A to 13H each having a circular section are similarly formed so as to penetrate in the axial direction.

As shown in FIGS. 1 and 2, the xenon lamp 40 having a substantially cylindrical shape is fitted so that its side tube 41 is in surface contact with the inner surface of the through hole 12, and the upper peripheral edge of the base plate 42 of the xenon lamp 40. The portion contacts the rear end surface of the head portion 10. In this manner, the xenon lamp 40 is held in a state of surface contact with the inside of the head portion 10, that is, in a state of good heat conduction, and its emission window 43 faces the outside of the lamp house through the through hole 12. There is.

As shown in detail in FIG. 4, the body portion 20
Has a substantially cylindrical shape and has three protrusions 2 on the inner surface on the front end side.
2A to 22C are formed. As shown in FIGS. 1 and 2, the trigger socket 50 has the protrusions 22A to 22A.
It is sandwiched by the inner surface of the tip of C and is fixed by a screw 23, so that the trigger socket 50 is spatially retained in the internal space 24 of the main body portion 20. Also, the protrusion 22A
The front end of ~ 22C is the base plate 42 of the xenon lamp 40.
The base plate 42 of the xenon lamp 40 is abutted against the lower surface of the peripheral portion of the head portion 10 and the main body portion 20.
It is clamped and fixed in. The internal space 24 communicates with the eight ventilation holes 13A to 13H of the head portion 10.

As shown in detail in FIG. 5, the xenon lamp 40 has five pins 44A to 44E projecting downward from the base plate 42, and the pins 44A to 44E.
Is inserted into the five insertion holes 51A to 51E of the tip portion of the trigger socket 50 shown in detail in FIG. 6, and the tip surface of the trigger socket 50 contacts the lower surface of the xenon lamp 40. The insertion holes 51A to 51E are equivalent to the output terminals 51A to 51E of the trigger circuit shown in FIG. 7, and the trigger circuit composed of the resistor R, the capacitor C, the diode D and the transformer T has a GND terminal, Trigger (GN
The D) terminal, the trigger terminal, and the Main terminal are connected to each other. Then, the cord 52 for guiding these input terminals is extended to the rear base portion 30 as shown in FIG. 1 and guided to the outside.

As shown in detail in FIG. 8, the base portion 3
0 has a substantially cylindrical shape, has a flange portion 32 extending inward on the rear end side, and the cooling fan 60 is fixed thereto through the four screw holes 35A to 35D. As shown in detail in FIG. 9, the cooling fan 60 includes six blades 61A to 61A.
F, which is rotated by the motor 62. In addition,
Two through holes 36, 3 formed in the base portion 30
Reference numeral 7 respectively guides the cord 52 of the trigger socket 50 and the cord 63 of the cooling fan 60 to the outside of the lamp house.

As shown in FIG. 1, the internal space 3 of the base portion 30.
3 communicates with the internal space 24 of the body portion 20, which communicates with the eight ventilation holes 13A to 13H of the head portion 10.
Therefore, when the blades 61 </ b> A to 61 </ b> F of the cooling fan 60 are rotated by the motor 62, the outside air in front of the lamp house passes through the ventilation holes 13 </ b> A to 13 </ b> H of the head portion 10 and flows into the internal space 24 of the main body portion 20 and the base portion. The air is exhausted from the internal space 33 of the cooling air 30 through the cooling fan 60.

As shown in FIGS. 1 and 4, two female screw portions 58A formed on the side wall portion of the main body portion 20,
58B screw-connects the illustrated lamp house to a substrate (not shown) inside the lighting device, and such a lighting device is shown in FIG. The head portion 10 of the lamp house shown in FIG. 1 is exposed on the front panel of the housing 70 of the lighting device, and the connector portion 72 of the optical fiber bundle 71 is screwed into the through hole 12 at the substantially central portion.

Next, the operation of this embodiment will be described.

First, when manufacturing and assembling the parts, the head portion 10 and the main body portion 20 which constitute the lamp house are formed.
Also, the base portion 30 is molded from a material having good thermal conductivity such as aluminum, and the surface is insulated with halogen or the like. Then, the xenon lamp 40 is attached to the head portion 10, the trigger socket 50 is attached to the main body portion 20, and the cooling fan 60 is attached to the base portion 30. After a while
When the head portion 10, the main body portion 20 and the base portion 30 are screwed together, the xenon flash lamp light source device of FIG. 1 is obtained.

The light source device of the present embodiment has a substantially cylindrical shape and is easy to handle, and the xenon lamp 40, the trigger socket 50 and the cooling fan 60 are contained in a small unit.
Are housed. Further, since the lamp house of the unit is assembled by screwing the head portion 10, the main body portion 20, and the base portion 30, the internal parts, for example, the xenon lamp 40 can be easily replaced.

The light source device constructed as shown in FIG.
The lighting device is housed in the housing 70 as shown in FIG. When using this illumination device, the optical fiber bundle 71 may be screwed into the through hole 12 of the head portion, or the emitted light may be directly projected to the outside.

Next, in using the light source device, as shown in FIG.
0 is turned on from the connector 73 of the lighting device,
When the switch 74 on the front panel of the housing 70 is turned on, the trigger socket 50 outputs a trigger signal and the motor 62 of the cooling fan 60 is driven. As a result, the xenon lamp 40 is pulse-lit, and the head unit 1
While the emitted light is projected from the through hole 12 of 0, the cooling air flows inside the lamp house.

Therefore, the xenon lamp 40 begins to generate heat and the trigger socket 50 also generates heat, but the cooling fan 60
Since the cooling air generated by the above flows into the internal space 24 of the main body portion 20 through the ventilation holes 13A to 13H of the head portion 10, the xenon lamp 40 and the trigger socket 50 are efficiently air-cooled. That is, the xenon lamp 40 is indirectly cooled via the head portion 10 that comes into surface contact with the trigger socket 50.
Is cooled by direct contact with the cooling air.

In this case, since the cooling air is guided inside through the ventilation holes 13A to 13H of the head portion 10, no air flow is generated inside the through hole 12 of the head portion 10. Therefore, dust or the like does not adhere to the emission window 43 of the xenon lamp 40, and the intensity of emitted light does not deteriorate. Moreover, since the cooling efficiency is sufficiently high, the xenon lamp 40 at high temperature
Rupture or a decrease in the conversion efficiency of the transformer T of the trigger circuit,
Problems such as disconnection of the resistor R can be avoided.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the lamp house is not limited to a columnar shape, and may have a prismatic shape. Further, the cross section of the vent hole of the head portion may be a bent rectangular shape.

[0029]

According to the light source device of the present invention, the cooling air can be cooled without hitting the exit window of the lamp, so that dust and the like in the air will not adhere. Therefore, sufficient light output can be realized for a long time. Moreover, since the assembly is easy and the configuration is simple, an inexpensive and compact light source device can be realized.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a xenon flash lamp light source device.

FIG. 2 is an exploded perspective view of the embodiment of FIG.

FIG. 3 is a front view of a head portion and a sectional view taken along the line AA.

FIG. 4 is a front view and a cross-sectional view taken along the line AA of the main body.

FIG. 5 is a top view and a side view of a xenon lamp.

FIG. 6 is a top view and a side view of a trigger socket.

FIG. 7 is a circuit diagram of a trigger circuit.

FIG. 8 is a front view of the base portion and a cross-sectional view taken along the line AA.

FIG. 9 is a front view of a cooling fan.

FIG. 10 is a perspective view of an illumination device incorporating the embodiment of FIG.

[Explanation of symbols]

10 ... Head part, 12 ... Through hole, 13A-13H ... Vent hole, 20 ... Main body part, 30 ... Base part, 40 ... Xenon lamp, 50 ... Trigger socket, 60 ... Cooling fan.

Claims (1)

[Claims] 1. A lamp, a trigger socket for accommodating a trigger circuit for pulse-lighting the lamp, a cooling fan for cooling the lamp and the trigger socket, and an interior for accommodating the lamp, the trigger socket and the cooling fan. The lamp house, wherein the lamp house has a through hole in which the side tube orthogonal to the light emission window of the lamp is in surface contact with the inner wall surface at a substantially central portion in the axial direction. And a head portion having a ventilation hole penetrating in the axial direction around the through hole, and the head portion is detachably attached to one end side and holds the trigger socket inside, and the head socket is provided around the trigger socket. A main body that forms an internal space that communicates with the ventilation hole, and is detachably attached to the other end of the main body and has a cooling fan inside. And, a light source apparatus characterized by having a base portion that forms an internal space that communicates the inner space and the outside of the main body portion through the cooling fan.