JP2595634Y2 - Light source lamp fixing device and light source lamp with alignment aid used therefor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for positioning and fixing a light source lamp used as a light source of a spectroscopic device or the like, and more specifically, to fit a light source lamp into an insertion recess of a mounting base to stop. The present invention relates to a light source lamp fixing device and a light source lamp with a positioning aid used therein.

[0002]

2. Description of the Related Art Some spectrophotometers such as a spectrophotometer have a light source lamp having a substantially cylindrical shape. As shown in FIG. 4, the light source lamp 1 is detachably fixed to a mounting base 200 having radiation fins. Fixing devices adapted to do this are known. That is, the light source lamp 1 is
The slide plate 300 is fixed to a predetermined position of the mounting base 200 in this state. Thereby, the light source lamp 1 is inserted and arranged in the mounting base. In this state, the fixing screw 400 is rotated to move the fixing bar 410 forward, and the light source lamp 1 is brought into contact with the inner peripheral wall surface 21 of the mounting base 200 to be fixed.

In this case, the light emitting portion 1 in the light source lamp 1 is inserted into a hole 22 provided in the mounting base 200.
It is necessary to correctly match 0, and the adjustment direction of the alignment is mainly a vertical direction (axial direction of the light source lamp 1), a front-rear direction when the hole 22 is forward, and a rotation in a horizontal plane. There is a direction. Therefore, in the above-described conventional apparatus, such adjustment in each direction is performed as follows.

That is, when the light source lamp 1 is first inserted into the hold bar 310 attached to the slide plate 300,
The posture of the light source lamp 1 is corrected by rotating the light source lamp 1 so that the light emitting unit 10 is correctly oriented to the front (the direction opposite to the slide plate 300). Thereby, the alignment in the rotation direction is performed.

[0005] The slide plate 300 is attached to the mounting base 20.
When screwing to zero, the light emitting unit 10 is appropriately shifted in the vertical direction so that the light emitting unit 10 faces the hole 22. As a result, vertical positioning is performed.

Further, as described above, the fixed bar 410
Is advanced, and the fixing bar 410 and the mounting base 200 are moved.
The light source lamp 1 is fixed to the inner peripheral wall 21 of the mounting base 200, that is, the predetermined position of the side wall surface of the light source lamp 1 is
Alignment in the front-rear direction is performed by abutting against the inner peripheral wall surface 21.

[0007]

However, in such a conventional apparatus, each alignment is performed visually, and thus lacks accuracy. In addition, position adjustment work is complicated,
In addition, when the light source lamp 1 is mounted on the mounting base 200, the above-described positioning is also performed, so that the time required for the positioning, and eventually, the assembling time becomes longer, and the workability is poor.

Further, after the positioning in the vertical and rotational directions is performed, the light source lamp 1 is moved forward by moving the fixed bar 420. Adjustment may be wasted. Furthermore, there is an inconvenience that the number of components for alignment is large and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above background, and has as its object to fix a light source lamp which can be easily and securely fixed firmly, and which is advantageous in terms of cost. An object of the present invention is to provide a device and a light source lamp with a positioning aid used therefor.

[0010]

In order to achieve the above-mentioned object, in the fixing device for a light source lamp according to the present invention, radiation from a light source lamp inserted and disposed in an insertion recess formed in an axial direction of a mounting base. A light source lamp fixing device for positioning and fixing the light source lamp at a predetermined position so as to radiate light to the outside through a hole formed in the mounting base so as to cross the insertion recess. A flange fixed to the outer periphery of the light source lamp, the flange having a notch cut out so as to extend in a radial direction, and the insertion recess at a predetermined position near an opening surface side of the insertion recess of the mounting base. A locking pin formed to extend in the axial direction and matching the cutout of the flange; and a hand for urging the light source lamp inserted into the insertion recess toward the inner wall surface of the insertion recess on the locking pin side. It was configured with a door.

[0011]

The light source lamp is inserted into the insertion recess of the mounting base. At this time, the flange provided on the outer periphery of the light source lamp comes into contact with the facing surface of the mounting base, and further insertion is suppressed. Since the length from the flange to the light emitting portion is set corresponding to the length from the facing surface of the mounting base to the hole, when the flange comes into contact with the facing surface of the mounting base, it is automatically inserted. The direction alignment is completed.

At the time of this insertion, the notch provided on the flange is matched with the locking pin provided on the mounting base. Thereby, rotation is suppressed and the direction of the light source lamp is determined.

Then, in this state, the light source lamp is pressed directly or indirectly to the hole through the urging means. Then, the side wall surface of the light source lamp abuts against the inner wall surface in the insertion recess of the mounting base, whereby the front-back alignment is performed. Also, when moving this light source lamp,
Even if an attempt is made to rotate, the rotation is suppressed by the sign of the notch and the engagement pin, so that no displacement occurs.
In this way, various alignments are automatically performed simply by inserting the light source lamp into the insertion recess at the time of assembly.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a preferred embodiment of the present invention. The figure shows a state where the light source lamp is separated. FIG. 2 is a cross-sectional view showing a state in which the mounting and fixing of the light source lamp are completed.

As shown in FIG. 1, a cylindrical light source lamp 1 is provided.
A concentric annular flange 3 is fixedly integrated with an adhesive or the like at a predetermined position on the outer periphery of the device. This flange 3
Is fixed at a position separated by a predetermined distance from the light emitting unit 10 (more specifically, the light emission center) inside the light source lamp.

At a predetermined position of the flange 3,
A notch portion 30 is provided for alignment, which is cut out from the outer peripheral surface toward the center. Specifically, a notch direction of the notch portion 30 above the light-emitting portion 10 inside the light source lamp 1 is provided. (Radial direction) and the radiation direction from the light emitting unit 10 are substantially matched (parallel). In this example, the flange 3 is formed of a material having good thermal conductivity such as a metal, and the heat generated by the light source lamp 1 can be transmitted to the radiation fin side of the mounting base 2 via the flange 3. In this way, the heat dissipation effect is improved. Also,
The flange 3 is formed by punching press working or the like. That is, the flange 3 with the notch 30 serves as an auxiliary tool for positioning.

The mounting base 2 is a tubular member and is formed to have a substantially rectangular cross section, and radiation fins are formed on two outer facing surfaces. The insertion recess 20 formed at the center position of the mounting base 2 so as to extend in the axial direction (for convenience, this direction is referred to as “vertical direction”) is opened in the vertical direction in this example. The shape of the inner surface of the insertion recess 20 is processed in accordance with the outer shape of the light source lamp 1 to be inserted and arranged.
And the diameter of the light source lamp 1 are made substantially coincident with each other. On the other hand, the rear side of the insertion recess 20 is formed as a parallel wall surface and is set to be longer than the diameter of the light source lamp 1. As a result, a space is formed on the rear side of the light source lamp 1, a predetermined clearance is ensured, a dimensional error at the time of manufacture and the use of a light source lamp of a different type to some extent are allowed, and the assembling work such as insertion is easy. Is being improved.

Further, the mounting base 2 on the inner peripheral wall surface 21 side
A hole 22 (one opening in the insertion recess 20 and the other opening in the outer surface of the mounting base 2) for guiding the light emitted from the light emitting unit 10 is provided on the side surface of the mounting base 2. The position of the hole 22 is set so as to face the light emitting unit 10 when the light source lamp 1 is inserted into the insertion recess 20. That is, the hole 2
The distance between the two and the distance from the flange 3 of the light source lamp 1 to the light emitting portion 10 are set to be substantially the same.

A pressing plate 4 is provided on the opposite surface facing the inner peripheral wall surface 21. The pressing plate 4 moves forward with the tightening of the fixing screw 40, and the light source lamp 1 is inserted into the insertion recess 20. It can be fixed by pressing against the outer circumference.
Further, a locking pin 5 is provided on a surface (upper surface) to which the flange 3 comes into contact when the light source lamp 1 is inserted, and the notch portion 30 of the flange 3 is matched. Have been. That is, the locking pin 5 is installed at a position above the hole 22 at a predetermined distance from the periphery of the opening of the insertion recess 20. That is, the separation distance of the locking pin 5 is longer than the distance from the outer periphery of the light source lamp 1 to the inner surface of the notch 30 of the flange 3. Accordingly, even when the light source lamp 1 is pressed forward and abuts against the inner peripheral wall surface 21 of the insertion recess 20,
The locking pin 5 does not contact the inner surface of the notch 30.

On the other hand, for mounting and fixing, the light source lamp 1 is inserted into the insertion recess 20 of the mounting base 2. Then, when the flange 3 provided on the outer periphery of the light source lamp 1 comes into contact with the upper surface of the mounting base 2, further insertion is suppressed. At this time, since the length from the flange 3 to the light emitting portion 10 is equal to the length from the upper surface of the mounting base 2 to the hole 22 as described above, the contact automatically inserts (up and down).
The direction alignment is completed. That is, the height position of the light emitting unit 10 is equal to that of the hole 22.

At the time of insertion, the notch 30 provided on the flange 3 and the locking pin 5 provided on the mounting base 2 are matched. Thereby, rotation of the light source lamp 1 is suppressed,
The direction of the light source lamp is determined. That is, the notch 30
The light emitting section 10 is located below the lock pin 5, and the hole 22 is located below the locking pin 5, so that the light emitting section 10 and the hole 22 coincide with each other in the rotation (circumferential) direction. Thereby, the light emitting unit 10
And the hole 22 face each other.

Further, in this state, the fixing screw 4 is rotated to move the fixing plate 4 forward (toward the light source lamp 1).
Then, the outer wall surface of the light source lamp 1 abuts on the inner peripheral wall surface 21 in the insertion recess 20 of the mounting base 1, whereby the positioning in the front-rear direction is performed.

Thus, simply insert the light source lamp 1 and
Just by tightening the fixing screw 40, the alignment of various types (in each direction) is automatically completed, and no special position adjustment is required, and no labor is required. That is, the positioning of the light source lamp 1 can be easily performed, and the light source lamp 1 can be securely and firmly fixed. Further, the number of parts is smaller than that of the conventional structure, which is advantageous in terms of cost.

FIG. 3 shows another embodiment of the present invention. As shown in the figure, in this example, the means for biasing the light source lamp 1 is different from that of the above-described embodiment, and other configurations are substantially the same. That is, one end of the fixing screw 40
The elastic plate 6 made of a metal plate having a substantially crank-shaped cross section fixed to the mounting base 2 applies an urging force to the front of the flange 3 (toward the locking pin 5), thereby indirectly causing the light source lamp to emit light. 1 presses the light source lamp 1 against the inner peripheral wall surface 21. Further, in this example, the base (upper part in the drawing) of the light source lamp 1 is covered by the tip (free end) of the elastic plate 6 and pressed downward, so that detachment of the light source lamp 1 is suppressed. ing.

The notch formed in the flange does not need to open to the side as described above, and may be, for example, an oval hole, and does not open upward (the lower surface has a predetermined shape). (A hole in which a concave portion having a shape is formed) may be used.

[0026]

As described in detail above, according to the light source lamp fixing device of the present invention and the light source lamp with the alignment aid used therein, the light source lamp is basically placed in the insertion recess of the mounting base. Various kinds of alignment are automatically performed by insertion, and there is no need to perform alignment at the time of assembly. Further, unlike the related art, there is no need for a visual alignment process, and the alignment is performed automatically. Therefore, the alignment is accurate and does not affect the skill of the operator. Further, the number of parts is small, which is advantageous in cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which mounting and fixing of each part in FIG. 1 are completed.

FIG. 3 is a cross-sectional view illustrating another embodiment of the present invention.

FIG. 4 is a plan view showing a conventional example of a light source lamp fixing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 light source lamp 2 mounting base 20 insertion recess 21 inner peripheral wall surface 22 hole 3 flange 30 cutout portion 4 pressing plate (urging means) 40 fixing screw (urging means) 5 locking pin 6 elastic plate (urging) Means to do)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01J 3/10 G01J 1/08 G01N 21/01

Claims (4)

(57) [Scope of request for utility model registration] 1. A hole formed in the mounting base such that light emitted from a light source lamp inserted and arranged in an insertion recess formed in an axial direction of the mounting base intersects the insertion recess. A light source lamp fixing device for positioning and fixing the light source lamp at a predetermined position so as to radiate to the outside via a notch portion cut out so as to extend in a radial direction toward a center and fixed to an outer periphery of the light source lamp A locking pin formed at a predetermined position near the opening surface side of the insertion recess of the mounting base so as to extend in the axial direction of the insertion recess, and matching a notch of the flange; Means for urging the light source lamp inserted into the place toward the inner wall surface of the insertion recess on the side of the locking pin. 2. The fixing device for a light source lamp according to claim 1, wherein said urging means comprises a pressing plate capable of contacting an outer wall surface of said light source lamp, and a means for advancing said pressing plate. . 3. The urging means is made of an elastic material such as a leaf spring, and one end of the elastic material is fixed to the mounting base, and the elastic material is connected to the notch of the flange.
2. The fixing device for a light source lamp according to claim 1, wherein the fixing device is in contact with an opposite side surface and is urged toward the notch . 4. A flange is fixed to a predetermined position on the outer surface of the cylindrical light source lamp, a notch for positioning is provided at a predetermined position of the flange , and the notch has a predetermined distance toward the center. Extend in the direction
A light source lamp with a positioning aid , characterized in that the light source lamp is configured to fit .