JP4095161B2 - Lamp house and light emitting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lamp house for detecting fluorescence characteristics of a measurement sample by irradiating the measurement sample with ultraviolet light or infrared light emitted from a xenon lamp or mercury xenon lamp set therein, and a xenon lamp. And so on.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a light emitting device that detects fluorescence characteristics of a measurement sample by irradiating the measurement sample with ultraviolet light or infrared light emitted from a xenon lamp or a mercury xenon lamp. In general, such a light emitting device is provided in a lamp house that houses a lamp, a condenser lens that collects light emitted from the lamp, and a reflection that reflects a part of the light emitted from the lamp. A mirror and an XY stage for moving the lamp to adjust the optical axis of the lamp are provided. Among these, the XY stage is particularly important for aligning the lamp in the horizontal and vertical directions, and is indispensable when high-precision optical axis alignment is required.
[0003]
[Problems to be solved by the invention]
However, since the XY stage is integrally provided with a position adjusting mechanism in the X direction and the Y direction, the mechanism becomes complicated and there is a limit to downsizing. For this reason, for example, if the XY stage is built in the lamp house, the size of the lamp house itself increases, and it becomes impossible to meet the demand for downsizing the lamp house. If the lamp house can be reduced in size, it will not only be convenient for storage and transportation, but it will also be easy to secure an experimental space.
[0004]
The present invention has been made in view of such circumstances, and an object thereof is to provide a lamp house that can be reduced in size and a light emitting device in which a lamp is mounted on the lamp house.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 is a lamp house in which a lamp is accommodated.
A reflection mirror that reflects a portion of the light emitted by the lamp;
A condensing lens that is disposed at a position facing the reflecting mirror via the lamp and collects the light emitted from the lamp and the reflected light reflected by the reflecting mirror;
An outer case having an exit window from which light collected by the condenser lens is emitted;
A base that is provided at the bottom of the outer case and has a lamp fixing portion to which the lamp is fixed;
A lamp horizontal moving means that is interposed between the lamp fixing part and the base and moves the lamp fixing part in a horizontal direction and in a direction perpendicular to a line connecting the reflecting mirror and the condenser lens;
Equipped with a base is interposed between the case and the outer cases among attached, a lamp vertical moving means for moving the inner casing in a vertical direction, and
The lamp horizontal movement means moves the lamp fixing base horizontally by a screw feed mechanism,
The lamp vertical moving means moves the inner case in the vertical direction by a rack and pinion mechanism.
[0006]
According to the lamp house of the first aspect of the present invention, the lamp fixing portion to which the lamp is fixed by the lamp horizontal moving means is in the horizontal direction and the direction perpendicular to the line connecting the reflecting mirror and the condenser lens Moved to. Further, the lamp vertical movement means moves the inner case to which the base is attached in the vertical direction, and consequently the lamp fixing portion provided on the base moves in the vertical direction. That is, the lamp horizontal movement means is responsible for the so-called X-axis adjustment of the lamp, and the lamp vertical movement means is the so-called Y-axis adjustment. Here, in this invention, since it comprised so that X-axis adjustment and Y-axis adjustment could be performed by an individual means in this way, each mechanism can be made compact and further size reduction of the whole lamp house is achieved. Can do.
[0007]
Further, the lamp horizontal movement means moves the lamp fixing base in the horizontal direction by the screw feed mechanism, and the lamp vertical movement means moves the inner case in the vertical direction by the rack and pinion mechanism .
[0009]
The light emitting device according to the present invention is characterized in that a lamp is detachably fixed to a lamp fixing base in a lamp house according to claim 1 .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the lamp house and the light emitting device according to the present invention will be described in detail. In addition, the same code | symbol shall be used for the same element or the element which has the same function, and the overlapping description is abbreviate | omitted.
[0011]
First, the configuration of the lamp house and the light emitting device according to the present embodiment will be described. FIG. 1 is an overall perspective view showing a light emitting device 6 in which a xenon lamp 4 is accommodated in a lamp house 2 according to the present embodiment. The lamp house 2 includes a rectangular parallelepiped outer case 8 and a side cover 10 that can be attached to and detached from a side portion of the outer case 8, and FIG. 1 shows a state in which the side cover 10 is removed. In addition, the side surface of the outer case 8 is formed with an emission window 12 through which light emitted from the lamp 4 is emitted and an air inlet 14 through which external air flows. The air inlet 14 is an elongated hole formed so that the longitudinal direction thereof faces the lateral direction of the side surface of the lamp house 2, and is provided on the three side surfaces of the outer case 8 and the side cover 10. . On the other hand, an air outlet 16 through which the air in the lamp house 2 flows out is formed on the upper surface of the outer case 8, and further, the air in the lamp house 2 is rotated below the air outlet 16 by rotating. A cooling fan 18 is disposed to flow out to the outside, and a safety cover 19 is attached above the air outlet 16.
[0012]
In the lamp house 2, an iron inner case 20 that houses the lamp 4 is provided. In addition, two rails 22 are juxtaposed at the lower portion of the inner case 20 with the longitudinal direction directed toward the mounting position of the side cover 10, and the lamp 4 is supported on the two rails 22. A base 24 is slidably disposed. In the present embodiment, the lamp 4 is surrounded by the inner case 20, the base 24, and the inner case cover 26 connected to the side cover 10 via four support columns 25. Of the three side surfaces of the inner case 20, stoppers 28 that prevent the base 24 from sliding are hung on two surfaces that contact the inner case cover 26. The stopper 28 is rotatably provided about the pin 27 as an axis, and is configured to prevent the base 24 from sliding by two base fixing portions 29 protruding downward.
[0013]
A cathode fixing plate 30 that is a lamp fixing portion for fixing the lamp 4 is provided at substantially the center of the upper surface of the base 24, and the cathode side of the lamp 4 is attached to the cathode fixing plate 30. The side is attached to a disc-shaped and conductive anode heat radiating plate 32. Furthermore, a lead wire 34 is connected to the anode heat dissipating plate 32, and the lead wire is led out of the inner case 20 from a lead wire outlet 35 opened on the side surface of the inner case 20. A circular lens housing hole 36 is formed in the side surface of the inner case 20 closest to the exit window 12. A lens housing for housing the condenser lens 38 is formed in the lens housing hole 36. Part 40 is inserted. On the other hand, a circular mirror accommodation hole 42 is formed at a position facing the lens accommodation hole 36 of the inner case 20 across the lamp 4, and a mirror that accommodates the reflection mirror 44 is formed in the mirror accommodation hole 42. The accommodating part 46 is inserted.
[0014]
FIG. 2 is a II-II cross-sectional view of the light emitting device 6 shown in FIG. As shown in this figure, the inner case 20 and the outer case 8 are separated from each other, and air flowing from the air inlet 14 flows between the inner case 20 and the outer case 8. A space 48 is formed. In other words, in the present embodiment, the air that flows in from the air inlet 14 hardly flows into the inner case 20 and follows the path indicated by the arrow in the drawing. Then, the inner case 20 is cooled by the inflowing air, thereby indirectly cooling the lamp 4, and an excessive temperature rise of the lamp 4 can be prevented. In the present embodiment, since the air circulation space 48 is formed, the inflowing air flows in the vicinity of the inner side of the outer case 8, and the temperature of the outer case 8 increases as well as the inner case 20 and the lamp 4. Can also be prevented.
[0015]
When the surface temperature of the outer case at the time of light emission was measured, it was 40 degrees or more in the lamp house that did not surround the lamp, whereas the air circulation space 14 was formed by surrounding the lamp 4 with the inner case 20 or the like. In the lamp house 2 of this embodiment, it is about 35 degrees, and it was found that the temperature of the outer case was reduced. Further, since the lamp 4 is surrounded by the inner case 20, dust and dust that flow in along with the air from the air inlet 14 do not dance in the vicinity of the lamp 4. Therefore, the progress of the light emitted from the lamp 4 is not hindered by dust or dirt, and the output of the emitted light can be improved.
[0016]
The cooling fan 18 operates in response to a signal from a temperature sensor (not shown) when the temperature in the lamp house 2 reaches a predetermined temperature, and generates a forced flow of air. By rotating the cooling fan 18, external air can be smoothly flowed from the air inlet 14 of the outer case 8 to the air circulation space 48, or the air of the air circulation space 48 can be smoothly discharged from the air outlet 16. Thus, the temperature rise of the lamp 4 and the outer case 8 can be effectively prevented. The cooling fan 18 may be configured to operate by providing a switch instead of the temperature sensor and turning on the switch.
[0017]
The lens housing portion 40 is supported at a predetermined interval from the outer case 8 by a condensing lens adjusting screw 50 screwed into the outer case 8 and a pin 52 fitted into the outer case 8. In addition, the lens housing portion 40 is disposed so as not to contact the edge of the lens housing hole 36 and to be separated. For this reason, when the light is collected, the heat accumulated in the condensing lens 38 is not easily transmitted to the outer case 8, and the condensing lens 38 is cooled by the air flowing through the air circulation space 48. The temperature rise of 8 can be effectively prevented. The lens housing portion 40 moves in the left-right direction in the drawing by turning the condenser lens adjustment screw 50, and the output light is adjusted. Note that a disc-shaped diaphragm plate 54 having an opening is disposed between the lens housing portion 40 and the lamp 4.
[0018]
On the other hand, the mirror housing portion 46 facing the lens housing portion 40 is separated from the outer case 8 by a predetermined distance by a reflection mirror adjusting screw 56 screwed into the outer case 8 and a pin 58 fitted into the outer case 8. It is supported. Further, the mirror accommodating portion 46 is arranged so as not to contact the edge of the mirror accommodating hole 42 and to be separated. For this reason, when the light is reflected, the heat accumulated in the reflection mirror 44 is difficult to be transmitted to the outer case 8, and the reflection mirror 44 is cooled by the air flowing through the air circulation space 48. The rise can be effectively prevented. The mirror housing portion 46 moves in the left-right direction in the drawing by turning the reflection mirror adjustment screw 56, and the output light is adjusted.
[0019]
A starter 62 to which a lead wire 34 electrically connected to the anode side of the lamp 4 and a lead wire 60 electrically connected to the cathode side of the lamp 4 are connected is disposed at the bottom of the outer case 8. . The light emitting device 6 of the present embodiment needs to be supplied with power from the outside, and the starter 62 is provided with a power supply connector 63 to which an external power supply is connected. When a constant voltage is supplied from an external power supply, the starter 62 amplifies the voltage until a discharge occurs between the pair of electrodes 4a and 4b in the lamp 4, and applies the amplified voltage between the electrodes 4a and 4b. . After the discharge is generated between the electrodes 4a and 4b, the voltage amplification function of the starter is automatically stopped. On the other hand, a lamp vertical movement unit 64 is provided on one side surface of the inner case 20, and the inner case 20 moves in the vertical direction by operating the lamp vertical movement unit 64 to align the axis of the lamp. (Details will be described later).
[0020]
3 is a III-III cross-sectional view of the light emitting device 6 shown in FIG. 3 and 2 that each surface of the inner case 20 surrounding the lamp 4 is separated from the outer case 8. As shown in FIG. 3, the inner case 20 is supported by the outer case 8 via the lamp vertical movement portion 64 and the lock portion 66. The lock portion 66 is configured such that the inner case is fixed when the screw 66a is tightened. When the lamp vertical moving portion 64 moves the inner case 20 in the vertical direction, the screw 66a may be loosened. The ramp vertical movement unit 64 includes a rotation shaft 64a, a gear 64b, a rack 64c having teeth provided at a pitch equal to the pitch of the gear 64b, and a fixing member 64d that fixes the rack c and the inner case 20. It constitutes a pinion mechanism. That is, when the rotating shaft 64a is rotated, the gear 64b is also rotated at the same time, and the inner case 20 is moved in the vertical direction via the rack 64c engaged with the gear 64b, so that the axis of the lamp 4 can be adjusted.
[0021]
Next, a method of attaching the lamp 4 to the lamp house 2 will be described with reference to FIG. When replacing the lamp 4, the stopper 28 is rotated counterclockwise to unlock the lamp 4, and then the base 24 is slid forward to the lamp replacement position, that is, the position where the lamp 4 comes out of the outer case 8. . The anode side of the lamp 4 is fixed to the anode heat dissipating plate 32 by tightening the knurled screw 68a, and the cathode side of the lamp 4 is fixed to the cathode fixing plate 30 by tightening the knurled screw 68b. The cathode fixing plate 30 to which the lamp 4 is attached is screwed to the lamp horizontal moving portion 72 with a screw 70. In the lamp house 2 of the present embodiment, since the base 24 can be slid to the position where the lamp 4 comes out of the outer case 8, the outer case 8 and the inner case 20 are not disturbed when the lamp 4 is replaced. The lamp can be installed and removed smoothly.
[0022]
FIG. 5 is a plan view of the base 24 as viewed from above. A screw member 74 having a shaft portion 74 b formed with a thread at a predetermined pitch is screwed into the female screw portion 73 of the base 24, and a disk-shaped fixing plate fixed to the tip of the screw member 74. 74a is embedded in the lamp horizontal movement portion 72 so as to be rotatable. The fixed plate 74a is configured to be rotatable with respect to the ramp horizontal moving portion 72, but hardly moves in the circumferential direction of the fixed plate 74a and the axial direction of the shaft portion 74b. When a hexagonal wrench or the like is inserted into the adjustment hole 76 (see FIG. 4) opened in the base 76 and the screw member 74 is rotated, the lamp horizontal moving part 72 is rotated in more detail in the axial direction of the shaft part 74b. Moves in the horizontal direction and in a direction perpendicular to the line connecting the reflecting mirror 44 and the condenser lens 38 (see FIG. 4).
[0023]
That is, in the light emitting device 6 of this embodiment, the position of the lamp 4 in the vertical direction can be adjusted by the rack and pinion mechanism that is the lamp vertical moving unit 64 (see FIG. 3), and the lamp 4 is moved by the lamp horizontal moving unit 72. Can be adjusted in the horizontal direction (see FIG. 5). By the way, a so-called XY stage or the like, which has been conventionally provided with an X-direction and Y-direction position adjustment mechanism, has a complicated mechanism, and there is a limit to downsizing. Therefore, for example, when the XY stage is built in the lamp house as in the present embodiment, the sizes of the inner case 20 and the outer case 8 are also increased. However, in the light emitting device 6 of the present embodiment, the mechanism for moving the lamp 4 in the horizontal direction and the vertical direction is not integrated, and the lamp horizontal moving unit 72 and the lamp vertical moving unit 64 are separately arranged. The mechanism can be made compact, and the inner case 20 and the outer case 8 can be downsized. In particular, as shown in FIG. 3, the entire apparatus can be further downsized by denting the portion of the inner case 20 to which the lamp vertical movement portion 64 is attached in the direction of the lamp 4.
[0024]
The effect of downsizing the lamp house 2 due to the separate arrangement of the lamp horizontal moving part 72 and the lamp vertical moving part 64 can be obtained without the inner case 20. For example, instead of the inner case 20, a slide plate standing on the base 24 may be provided, and the fixing member 64d of the lamp vertical movement unit 64 may be attached to the slide plate. Further, instead of a plate, a rod-shaped member may be used, and further, the fixing member 64 d may be attached to a member such as a frame surrounding the lamp 4.
[0025]
Next, the operation of the light emitting device 6 according to the present embodiment will be described with reference to FIG. When an external power supply is connected to the power supply connector 63 and power is supplied, the starter 62 amplifies the supply voltage, and the amplified voltage is applied between the electrodes 4a and 4b. If the amplified voltage is continuously applied and discharge occurs between the electrodes 4a and 4b, the voltage amplification function of the starter 62 is stopped, and the power from the external power source is applied as it is between the electrodes 4a and 4b. After the discharge is generated in the lamp 4 in this way, the light that has passed through the opening of the aperture plate 54 among the radiated light generated by the discharge is condensed by the condenser lens 38 and emitted from the emission window 12. The sample is irradiated. Similarly, the light reflected by the reflection mirror 44 is also emitted through the condenser lens 38.
[0026]
As mentioned above, although the invention made | formed by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment. For example, the lamp may be a mercury xenon lamp or the like instead of a xenon lamp. Also, the air cooling fan is not used to let the air in the lamp house flow out from the air outlet on the upper surface of the outer case, but on the contrary, to let outside air flow in from the air outlet and guide it to the air circulation space. You may use for.
[0027]
【The invention's effect】
As described above, according to the present invention, in the lamp house in which the lamp is accommodated,
A reflecting mirror that reflects a part of the light emitted from the lamp, and a condenser lens that is disposed at a position facing the reflecting mirror via the lamp and collects the light emitted from the lamp and the reflected light reflected by the reflecting mirror. An outer case having an exit window through which light collected by the condenser lens is emitted; a base provided at a lower portion of the outer case and having a lamp fixing portion to which the lamp is fixed; and a lamp fixing portion; A lamp horizontal moving means for moving the lamp fixing portion in a horizontal direction and in a direction perpendicular to a line connecting the reflecting mirror and the condenser lens, and the base is attached. A lamp vertical movement means interposed between the inner case and the outer case, and moving the inner case in the vertical direction.The lamp horizontal movement means moves the lamp fixing base in the horizontal direction by a screw feed mechanism. Move So, the lamp vertical moving means, since the inner case and configured to move in the vertical direction by a rack-and-pinion mechanism, each mechanism can be made compact, it is possible to further reduce the overall size of the lamp house .
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a light emitting device in which a xenon lamp is accommodated in a lamp house according to the present invention.
2 is a sectional view of the light emitting device shown in FIG. 1 taken along the line II-II.
3 is a cross-sectional view of the light emitting device shown in FIG. 2 taken along the line III-III.
FIG. 4 is a perspective view used for explaining a method of attaching a lamp to a lamp house.
FIG. 5 is a plan view of the base of the lamp house according to the present invention.
[Explanation of symbols]
2 ... lamp house, 4 ... xenon, 6 ... light emitting device, 8 ... outer case, 10 ... side cover, 12 ... exit window, 14 ... air inlet, 18 ... cooling fan, 20 ... inner case, 22 ... rail, 24 ... Base, 26 ... Inner case cover, 28 ... Stopper, 30 ... Cathode fixing plate ( lamp fixing portion ) , 32 ... Anode heat radiating plate, 36 ... Lens housing hole, 38 ... Condensing lens, 40 ... Lens housing portion, 42 ... Mirror accommodating part, 44 ... Reflecting mirror, 46 ... Mirror accommodating part, 48 ... Air circulation space part, 54 ... Diaphragm plate, 62 ... Starter, 64 ... Lamp vertical movement part ( lamp vertical movement means ), 64a ... Pinion, 64c... Rack, 72... Lamp horizontal moving unit ( lamp horizontal moving means ).

Claims (2)

In the lamp house where the lamp is housed,
A reflecting mirror that reflects a portion of the light emitted by the lamp;
A condensing lens that is disposed at a position facing the reflection mirror via the lamp and condenses the light emitted by the lamp and the reflected light reflected by the reflection mirror;
An outer case having an exit window from which light collected by the condenser lens is emitted;
A base having a lamp fixing portion provided at a lower portion of the outer case and to which the lamp is fixed;
A lamp that is interposed between the lamp fixing part and the base and moves the lamp fixing part in a horizontal direction and in a direction perpendicular to a line connecting the reflecting mirror and the condenser lens. Horizontal movement means;
While being interposed between the outer cases and cases among which the base is attached, and a lamp vertical moving means for moving the inner casing in a vertical direction,
The lamp horizontal movement means moves the lamp fixing base in a horizontal direction by a screw feed mechanism,
The lamp vertical movement means moves the inner case in a vertical direction by a rack and pinion mechanism. The light emitting device according to claim 1 , wherein the lamp is detachably fixed to the lamp fixing base in the lamp house.

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