JP4112696B2 - Spot light source device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spot light source device that emits light.
[0002]
[Prior art]
Conventionally, in a spot light source device, light emitted from a discharge tube is reflected / condensed by a reflecting mirror such as an elliptical condensing mirror, guided to an exit, and a light guide means such as a fiber connected to the exit The light is emitted to the outside by (light guide).
[0003]
At this time, in order to control the ON / OFF of the light guide / exit from the reflection mirror to the exit, without turning on / off the discharge tube, the collected light is blocked on the optical axis. A shutter that controls the passage is used. In addition, as a shutter driving unit for driving and controlling the shutter, for example, a rotary solenoid is used. An example of such a spot light source device is the device shown in Japanese Patent Publication No. 7-114993.
[0004]
[Problems to be solved by the invention]
FIG. 5 shows an example of a conventional shutter device in such a spot light source device and its ON / OFF operation. The shutter 9 includes a shutter plate 90 and a shutter drive unit 91, and the shutter plate 90 having a predetermined shape is connected to the shutter drive unit 91 including a rotary solenoid and is driven and controlled. The rotation axis 91a for rotationally driving the shutter 9 is set in parallel to the optical axis of the emitted light, and the shutter plate 90 of the shutter 9 is driven at the rotation angle θ by this axis to emit light. ON / OFF is performed. In FIG. 5, the position of the shutter plate 90 when turned on is indicated by a solid line, and the position when turned off is indicated by a dotted line. As for the position when ON, in this example of the apparatus, the protrusion 90a provided on the shutter plate 90 is detected by the position sensor 91b to confirm the position.
[0005]
When such a spot light source device using a shutter is used for a long period of time in applications where it is necessary to frequently turn on / off light emission, the shutter driving unit deteriorates due to heat generation or vibration caused by driving the shutter. May not work properly.
[0006]
In this case, since there is no problem in the parts and parts of the spot light source device other than the shutter, only the shutter is replaced. However, in this replacement work, it is necessary to align the optical axis of the light emission of the spot light source device with the shutter plate, alignment with the position sensor that detects the position of the shutter plate and the shutter plate, etc. Since the work becomes complicated, it is not possible to accurately and easily install and replace the shutter.
[0007]
The present invention has been made in view of the above problems, and provides a spot light source device using a shutter that can easily perform positioning of a shutter, a position sensor, and the like and can be easily attached and detached. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, a spot light source device according to the present invention includes a discharge tube that emits light, a reflection mirror that reflects light emitted from the discharge tube, a discharge tube, and a reflection mirror. In a spot light source device having a housing to be stored and an exit port provided on the front surface of the housing for emitting light from the reflection mirror, the interior of the housing faces the exit port, and the light is directed to the outside. An output area where emission control is performed and a light source area where the discharge tube and the reflection mirror are stored are configured, and the output area has an emission opening at a position on the front surface facing the emission port. An inner box having an upper surface open and fixed to the housing, and an inner box cover that is detachably installed to cover the upper surface of the inner box, and the inner box cover includes a shutter plate, Shutter plate And a shutter driving unit for rotationally driven, and a shutter for switching the ON / OFF of emission of light from the exit, a position sensor for detecting the position of the shutter plate connects the shutter and the position sensor in the drive unit and a connector portion is integrally attached to the end, the height of the inner box is set lower than the height of the housing, the inner box and the inner box cover, characterized in that it is configured to have a light shielding function And
[0010]
By fixing both the shutter having the shutter plate and the shutter driving unit and the position sensor for detecting the position of the shutter plate to the inner box cover, the shutter plate and the position sensor can be aligned when the shutter is installed or replaced. It becomes unnecessary. Also, by fixing the inner box cover to the inner box, it is possible to align the shutter plate with the optical axis of the light emission, so the shutter can be easily attached and removed, and its installation and replacement can be performed accurately and accurately. It can be done easily. The fixed inner box and inner box cover also have a light shielding function.
[0011]
Further, by adopting a configuration in which the connector portion is fixedly installed with respect to the inner box cover, wiring at the time of installation / replacement of the shutter can be easily performed.
[0012]
Further, an outside air intake port is provided at a predetermined portion facing the output region on at least one side surface of the housing, and a ventilation port is provided at a predetermined portion facing the outside air intake port on the side surface of the inner box. May be.
[0013]
In this way, by providing the outside air intake port on the side surface of the housing and the vent port on the side surface of the inner box in correspondence with the positions, the outside air is introduced into the inner box, and the shutter, the inner box, and the inner box A box cover etc. can be cooled.
[0014]
Moreover, it is good also as a structure further provided with the light guide connected to an output port and light-guided the emitted light. For example, light can be efficiently emitted and used by connecting a light guide having a form and performance according to the application, such as a fiber.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a UV spot light source device according to the spot light source device according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the dimensional ratios in the drawings do not necessarily match those described. In addition, about each surface of the housing which comprises the outer surface of a spot light source device, a bottom surface and an upper surface, and about the other four surfaces, the surface where the exit is provided facing the opening of the discharge tube and the reflection mirror Is the front side, the opposite side is the rear side, the left side is the left side and the right side is the right side.
[0016]
FIG. 1 is a horizontal end view of a UV spot light source device according to an embodiment of the present invention on a plane including the center of a discharge tube 20. 2 and 3 are perspective views showing a schematic configuration of the UV spot light source device shown in FIG. The housing 1 in this embodiment includes a housing base part 11 and a housing cover 12. In FIG. 2, the housing base part 11 and the housing cover 12 are broken, and a schematic configuration inside the apparatus is shown. Further, an inner box cover 33 and a light source cover 35 described later are not shown here. In FIG. 3, the breakage of the housing base 11 and the housing cover 12 is the same as in FIG. 2, but the inner box cover 33 and the light source cover 35 are illustrated to clearly indicate the division of each region inside the housing 1. is doing.
[0017]
Here, for each surface of the housing 1, the front surface is 1a, the rear surface is 1b, the left side surface is 1c, the right side surface is 1d, the bottom surface is 1e, the top surface is 1f, and the front surface 1a emits light at a predetermined position. An exit port 13 is provided for this purpose. For each of these surfaces, the housing base 11 constitutes a front surface 1a, a rear surface 1b and a bottom surface 1e of the housing 1, and the housing cover 12 constitutes a left side surface 1c, a right side surface 1d and an upper surface 1f of the housing 1.
[0018]
As shown in FIG. 1, the inside of the housing 1 includes a drive area A in which a device for driving such as a power source and a circuit is stored, an output area B in which a shutter for controlling the emission of light to the outside is installed, a discharge A light source region C in which tubes and reflecting mirrors are stored, a ventilation region D for controlling the air flow path, and a rear region E having an exhaust port for exhausting the air flow are configured. .
[0019]
The drive area A is formed on the right side of the apparatus by the dividing plate 31. The partition plate 31 is composed of a left side surface and a rear surface, and the height thereof is equal to the distance from the bottom surface 1 e to the top surface 1 f of the housing 1, that is, the height of the housing 1. Further, the rear surface of the partition plate 31 is connected to the right side surface 1d of the housing 1, so that the drive region A has the left side surface and the rear surface thereof separated from each other by the partition plate 31, and the front surface, right side surface, bottom surface and upper surface are each surface of the housing 1. Further, the front side of the left side surface of the drive area A is partially opened and communicated with a ventilation area D described later.
[0020]
In the driving area A, a driving device for driving and controlling each part of the UV spot light source device is installed. In the drawing, the driving device 15 is schematically shown in a simplified manner, but the driving device 15 may be configured by a plurality of devices. For example, this drive device includes a power source that supplies current to each unit, a circuit that drives each unit, and a computer that controls them. The driving device 15 may be configured to be connected to a panel or the like installed at a predetermined position facing the driving area A of the front surface 1a of the housing 1 and operated by an operator. In the drawing, connection between the driving device 15 and each part of the UV spot light source device is not shown.
[0021]
The output area B is formed on the left side of the apparatus by the inner box 32 and the inner box cover 33. The inner box 32 includes an inner box front part 32a and an inner box rear part 32c. An emission opening 32b for emitting light is formed at a predetermined position facing the emission port 13 on the front surface of the inner box front portion 32a. In addition, an opening 32d for allowing light from the discharge tube 20 to enter and to be guided is provided on the rear surface of the inner box rear portion 32c. The height of the inner box 32 comprising the inner box front part 32a and the inner box rear part 32c is set lower than the height of the housing 1, and the inner box cover 33 is installed on the upper surface thereof. As a result, the output area B is configured such that the front surface, the rear surface, the left side surface, and the right side surface are divided by the inner box 32, the bottom surface is divided by the bottom surface 1 e of the housing 1, and the upper surface is divided by the inner box cover 33.
[0022]
In FIG. 2, the inner box front portion 32a and the inner box rear portion 32c of the inner box 32 are partially broken to show the inside. In the output area B, the shutter 4 is installed inside the inner box front portion 32a. The shutter 4 includes a shutter plate 41 and a shutter driving unit 42, and is fixed to the shutter fixing unit 33a. Further, the position where the shutter plate 41 is ON is confirmed by detecting the protrusion 41a provided on the shutter plate 41 by the position sensor 43. The position sensor 43 is fixed and installed on the position sensor fixing portion 33b.
[0023]
FIG. 4 is a perspective view showing a method for fixing the shutter 4 and the position sensor 43 to the inner box cover 33 and a method for attaching / detaching the shutter 4 and the position sensor 43 to / from the inner box 32. The plate-like shutter fixing part 33 a and the position sensor fixing part 33 b to which the shutter 4 and the position sensor 43 are fixed are integrally fixed to the inner box cover 33. During use / operation of the spot light source device, the inner box cover 33 is fixed to the inner box 32, whereby the inner box cover 33, the shutter fixing portion 33a, the position sensor fixing portion 33b, and the shutter 4 and the position fixed to these. The sensor 43 forms a unit for installing or replacing the shutter, which can be easily attached to and detached from the inner box 32 fixed to the housing base portion 11.
[0024]
The inner box 32 is constituted by the inner box front part 32a and the inner box rear part 32c as described above, but the shutter fixing part 33a and the position sensor fixing part 33b are arranged on the upper surface of the inner box front part 32a of the inner box cover 33. In the portion, the shutter 4 is installed so as to be disposed inside the inner box front portion 32a. Further, the shutter fixing part 33a and the position sensor fixing part 33b are installed perpendicular to the optical axis of the emitted light (hereinafter simply referred to as the optical axis), whereby the shutter 4 is parallel to the optical axis. The shaft is installed so as to be rotationally driven with its rotating shaft.
[0025]
At this time, the alignment of the shutter 4 and the position sensor 43 is achieved by previously installing and fixing the shutter 4 and the position sensor 43 at a predetermined position with respect to the inner box cover 33, and the alignment of the shutter 4 and the optical axis is as follows. This is achieved by installing and fixing the inner box cover 33 at a predetermined position with respect to the inner box 32. Therefore, it is not necessary to perform complicated positioning when installing or replacing the shutter 4 or the like, and it can be easily installed and replaced.
[0026]
Further, in the present embodiment, a connector 44 having a connector 44a and a cable 44b for connecting the connector 44a to the shutter 4 and the position sensor 43 is installed and fixed to the inner box cover 33. . The connector 44 is for connecting the shutter 4 and the position sensor 43 to the driving device 15 (specifically, a control device for controlling the shutter 4 and the like, which is a component of the driving device 15). The connector of the connection destination is installed at a predetermined position on the right side surface of the inner box 32, for example. With this configuration, in addition to the installation and alignment of the shutter 4 and the like, the wiring thereof can be easily performed. There may be a plurality of connector parts, for example, a connector part is provided for each of the shutter 4 and the position sensor 43.
[0027]
In FIG. 2, as described above, the inner box cover 33 is not shown, and therefore, these are shown in a state of floating in the drawing. In FIG. 2, the position of the shutter plate 41 indicates a state where light emission is ON and the emission opening 32 b is open. A state where light emission is OFF, that is, a state where the shutter plate 41 is on the optical axis, covers the emission opening 32b, and blocks light emission, is indicated by a dotted line. In FIG. 1, when light emission is ON, each part of the shutter 4 is not on the horizontal plane including the optical axis in the present embodiment, and thus the shutter 4 is not illustrated.
[0028]
In the present embodiment, the fiber 5 is connected to the opening portion including the emission opening 32b and the emission port 13 as a light guide, and a fiber insertion port 50 which is a light guide insertion port for the connection and fixation. Is installed. A filter fixing plate 32e (not shown in FIG. 2) is installed at the boundary between the inner box front part 32a and the inner box rear part 32c. The filter fixing plate 32e is provided with an opening at a predetermined position between the opening 32d on the rear surface of the inner box 32 and the emission opening 32b on the front surface of the inner box 32, and the inner box rear portion 32c of the filter fixing plate 32e. On the side, an ultraviolet light transmission filter 14 (not shown in FIG. 2) is installed so as to cover the opening.
[0029]
The light source region C is formed on the left side of the apparatus by the light source sorting plate 34 and the light source cover 35. The light source sorting plate 34 is constituted by a right side surface and a rear surface, and the height thereof is set lower than the height of the housing 1. Further, the right side surface of the light source sorting plate 34 is connected to the rear surface of the inner box rear portion 32 c of the inner box 32. The light source cover 35 includes a left side surface and an upper surface, and is connected to the light source sorting plate 34 and installed. As a result, the light source region C is divided by the light source dividing plate 34 on the right side and the rear side, the light source cover 35 on the left side and the upper side, the rear part 32c of the inner box 32 on the front side, and the bottom 1e of the housing 1 on the bottom side. Configured.
[0030]
In this light source region C, a lamp unit 2 having a discharge tube 20 and a reflection mirror 21 is installed. The lamp unit 2 is fixed so as to face the opening 32d of the inner box rear part 32c by the positioning ring 22 of the lamp unit 2 and the lamp holding part 28 installed on the rear surface of the inner box rear part 32c. In addition, each electrode of the discharge tube 20 is connected to an insulating substrate 23, from which connection to a power source (not shown) is performed.
[0031]
The light source cover 35 is connected and fixed to the upper surface 1f of the housing cover 12 by a light source cover fixing portion 35a. At the rear of the light source cover 35, an interlock release part 35c protruding downward is provided. As a result, when the housing cover 12 is correctly attached, the interlock control portion 16 fixed to the surface of the light source partition plate 34 on the ventilation region D side by the interlock release portion 35c side of the housing 1 on the rear surface 1b side. The interlock release switch 16a (shown in FIG. 1) installed in the device is pressed to release the interlock, and the apparatus can be operated.
[0032]
Further, in the present embodiment, a lamp unit 2 that can be easily attached and detached is used, and the mounted lamp unit 2 is a lock part of the lamp fixing part 29 provided on the left side surface of the inner box rear part 32c. It is fixed by 29a. Also in this case, the light source cover 35 corresponds to the base part side lamp fixing engagement part 29b provided in the lamp fixing part 29, and the base part side lamp fixing engagement is performed when the lamp unit 2 is correctly fixed. A cover-side lamp fixing engagement portion 35d that engages with the portion 29b is provided.
[0033]
The ventilation region D is formed by being sandwiched between the left side surface of the partition plate 31 that forms the drive region A, and the right side surface of the inner box 32 and the light source partition plate 34 that form the output region B and the light source region C. This ventilation region D is provided for the purpose of controlling the cooling path of each part by the air flow. In this embodiment, the ventilation region D is further divided into two regions by the ventilation control plate 36. An air flow confluence region F is formed in front of. Similar to the light source region C, the upper surface of the ventilation region D is covered with the light source cover 35. In addition, a ventilation control plate 35b for restricting ventilation is provided in the uppermost front part of the light source cover 35 from the upper part of the light source area C to the upper part of the ventilation area D.
[0034]
The rear region E is formed by being sandwiched between the rear surfaces of the partition plate 31 and the light source partition plate 34 that form the drive region A and the light source region C, and the rear surface 1 b of the housing 1. In such a configuration, light emitted from the discharge tube 20 of the lamp unit 2 installed in the light source region C is reflected by the reflection mirror 21 and incident on the output region B, and light emission is turned on by the shutter 4. When / OFF is controlled and the shutter 4 is in the ON state, the light is incident on the fiber 5 connected to the fiber insertion port 50 via the emission opening 32b and the emission port 13, and is output to the outside.
[0035]
The inside of the apparatus is cooled by an air flow by outside air introduced from the outside, and the path of the air flow is controlled by an outside air intake port, a ventilation port, or the like provided in each part. The arrangement of these vents and the like is shown in FIG. 1, and is not shown in FIGS.
[0036]
In order to cool the shutter 4 and the position sensor 43 in the inner box 32, the left side surface 1 c of the housing cover 12 faces the output region B and faces a predetermined position facing the left side surface of the inner box front portion 32 a. Two outside air intakes 62 are installed, and a light shielding vent 64 is provided at a predetermined position on the left side surface of the inner box front portion 32 a facing the second outside air intake 62. As a result, the air flow introduced from the second outside air inlet 62 is introduced into the inner box 32 from the light shielding vent 64, and the shutter 4, the inner box 32, the inner box cover 33 and the like are cooled. . The light shielding vent 64 is a vent having a structure in which light cannot pass in order to prevent ultraviolet light from leaking to the outside.
[0037]
In the present embodiment, an outside air intake hole 55 is also provided in the fiber insertion port 50 attached to the emission port 13. The fiber insertion port 50 is attached so that the outside air intake hole 55 is connected to a ventilation port 32g provided at a predetermined position around the emission opening 32b of the inner box front portion 32a. The outside air is also introduced into the inner box 32 from the outside air intake hole 55, and is used for cooling the shutter 4, the fiber insertion port 50, and the like.
[0038]
The air flow path of the entire apparatus is roughly as follows. That is, the first air flow introduced from the first outside air intake 61 on the right side surface 1d of the housing 1 cools each part of the drive device 15 and the like installed in the drive region A, and opens the front. The air flows into the air flow merge area F from the portion. Further, the second air flow introduced from the second outside air intake port 62 of the left side surface 1c of the housing 1 is introduced into the inner box 32 from the light shielding vent 64 of the inner box front portion 32a and the interior thereof. Each part of the shutter 4 and the like installed in is cooled, passes through the vent 65 of the filter fixing plate 32e, and flows into the air flow merge area F from the vent 66 of the rear portion 32c of the inner box. The first air flow and the second air flow that have flowed into the air flow merge region F merge to form a third air flow. The third air flow is introduced into the light source region C from the light shielding vent 67 of the light source partition plate 34 and cools each part such as the lamp unit 2 installed therein, and the light source partition plate 34 and the light source cover 35 are cooled. The air flows into the rear region E from the ventilation portion 68 between them, and is finally exhausted from the fan 63 to the outside.
[0039]
The spot light source device according to the present invention is not limited to the UV spot light source device as described above, and can be applied to spot light source devices of various forms and applications such as a visible light source device. Also, the form of the shutter is not limited to that shown in the present embodiment, and any other form may be used as long as it can be detachably configured.
[0040]
【The invention's effect】
As described in detail above, the spot light source device according to the present invention has the following effects. That is, a shutter comprising a shutter plate and a shutter drive unit and a position sensor for detecting the position of the shutter plate are integrally fixed and installed on the inner box cover, thereby, with respect to the inner box fixed to the spot light source device. A shutter or the like can be configured to be detachable. In addition, by fixing the shutter or the like to the inner box cover in advance, it is not necessary to perform alignment during installation / replacement, and installation / replacement, etc. can be performed easily and reliably.
[Brief description of the drawings]
FIG. 1 is a horizontal end view showing an embodiment of a UV spot light source device according to the present invention.
2 is a perspective view of the UV spot light source device shown in FIG. 1 with an inner box cover and a light source cover removed. FIG.
3 is a perspective view of the UV spot light source device shown in FIG. 1 with an inner box cover and a light source cover mounted thereon. FIG.
FIG. 4 is a perspective view showing a method for fixing and attaching / detaching a shutter or the like.
FIG. 5 is a perspective view showing a configuration of a shutter used in a conventional spot light source device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Housing, 1a ... Front surface, 1b ... Rear surface, 1c ... Left side surface, 1d ... Right side surface, 1e ... Bottom surface, 1f ... Upper surface, 11 ... Housing base part, 12 ... Housing cover, 13 ... Outlet, 14 ... Ultraviolet light Transmission filter, 15 ... drive device, 16 ... interlock control unit, 16a ... interlock release switch,
DESCRIPTION OF SYMBOLS 2 ... Lamp unit, 20 ... Discharge tube, 21 ... Reflection mirror, 22 ... Positioning ring, 23 ... Insulating substrate, 28 ... Lamp holding part, 29 ... Lamp fixing part, 29a ... Locking part, 29b ... Base part side lamp fixing member Joint,
31 ... Partition plate, 32 ... Inner box, 32a ... Inner box front part, 32b ... Outlet opening part, 32c ... Inner box rear part, 32d ... Opening part, 32e ... Filter fixing plate, 32g ... Vent, 33 ... Inner box cover 33a ... Shutter fixing part, 33b ... Position sensor fixing part, 34 ... Light source sorting plate, 35 ... Light source cover, 35a ... Light source cover fixing part, 35b ... Ventilation control plate, 35c ... Interlock release part, 35d ... Cover side lamp Fixed engagement part, 36 ... ventilation control plate,
4 ... Shutter, 41 ... Shutter plate, 41a ... Projection part, 42 ... Shutter drive part, 43 ... Position sensor, 44 ... Connector part, 44a ... Connector, 44b ... Cable,
5 ... Fiber, 50 ... Fiber insertion port, 55 ... Outside air intake hole,
61 ... First outside air intake port, 62 ... Second outside air intake port, 63 ... Fan, 64 ... Light shielding vent, 65, 66 ... Vent, 67 ... Light shielding vent, 68 ... Vent
DESCRIPTION OF SYMBOLS 9 ... Shutter, 90 ... Shutter board, 90a ... Protrusion, 91 ... Shutter drive part, 91a ... Rotating shaft, 91b ... Position sensor.

Claims (5)

A discharge tube that emits light;
A reflection mirror for reflecting light emitted from the discharge tube;
A housing in which the discharge tube and the reflection mirror are stored;
In a spot light source device having an emission port provided on the front surface of the housing for emitting light from the reflection mirror,
The interior of the housing is
The output port faces and is configured to have an output region in which light emission control is performed, and a light source region in which the discharge tube and the reflection mirror are stored,
In the output area,
An inner opening which has an emission opening at the position of the front surface facing the emission opening, has an upper surface open and is fixed to the housing, and is detachably installed so as to cover the upper surface of the inner box A box cover, and
The inner box cover includes a shutter plate and a shutter drive unit that rotationally drives the shutter plate, a shutter for switching ON / OFF of light emission from the emission port, and a position of the shutter plate A position sensor for detecting the position and a connector for connecting the shutter and the position sensor to a driving device are integrally attached ,
The height of the inner box is set lower than the height of the housing, and the inner box and the inner box cover are configured to have a light shielding function . An outside air intake port is provided at a predetermined part facing the output region on at least one side surface of the housing,
Side of the inner box, the a predetermined portion which faces the outside air intake port, and a light shielding vent is provided according to claim 1 Symbol placement spot light source apparatus. Wherein connected to the exit port, a spot light source apparatus according to claim 1, wherein further comprising a light guide for guiding the light emitted. A lamp unit is constituted by the discharge tube and the reflection mirror,
  An incident opening for allowing light from the discharge tube to enter is provided on the rear surface of the inner box, and the lamp unit is placed in the incident opening by a lamp holding unit installed on the rear surface of the inner box. The spot light source device according to claim 1, wherein the spot light source device faces and is fixed. The said inner box is comprised by the inner box front part containing the front surface in which the said output opening part was provided, and the inner box rear part containing the rear surface in which the said incident opening part was provided. The spot light source device described.

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