JPH0545614U - Fixing device for light source lamps for LCD projectors - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of parts and facilitate lamp replacement. [Structure] The holding member 3 includes leaf springs 3a, 3a and a stopper 3
b, 3b and the guide 3c are integrally molded with a thermosetting polyimide resin and fastened to the support base 2.
The holding member 4 is also the same. 4 for light source lamp frame 1
Notches are provided at some places, and the notches are inserted and rotated so that the notches come to the positions of the leaf springs and the stoppers of the holding members 3 and 4. At that time, the outer periphery of the light source lamp frame 1 is guided by the guides 3c of the holding members 3 and 4.
And 4c. The light source lamp frame hits the stopper 3b and stops. In this state, the light source lamp frame is pressed against and fixed to the support base by four leaf springs.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a light source lamp fixing device for a liquid crystal projector, and more particularly to a structure thereof.

[0002]

[Prior Art]

 FIG. 4 shows an example of a conventional fixing device for a light source lamp for a liquid crystal projector. As shown in FIG. 4 (a), four columns are erected on the lamp support base, and a screw hole is provided at the tip thereof. A fixing screw is screwed into the screw hole of the column through a flange, a compression coil spring and a washer, and the flange fixes the light source lamp by pressing the frame of the light source lamp against the lamp support base as shown in Fig. 4 (b). It

[0003]

[Problems to be solved by the device]

 The above-described conventional light source lamp fixing device for a liquid crystal projector has many drawbacks such as a large number of parts and poor workability in assembly. Furthermore, there was a problem that the replacement of the light source lamp was troublesome.

The present invention has been made in view of the above points, and an object thereof is to provide a fixing device for a light source lamp for a liquid crystal projector, which has a small number of parts and is easy to assemble.

Another object of the present invention is to provide a light source lamp fixing device for a liquid crystal projector, which allows easy lamp replacement.

[0006]

[Means for Solving the Problems]

 The light source lamp fixing device for a liquid crystal projector according to the present invention is provided with a holding member made of polyimide resin integrally formed with a leaf spring, a stopper and a guide on a support base, and the frame of the light source lamp is held by the holding member. The leaf spring presses the frame of the light source lamp against the supporting base when the member is guided to the supporting base and rotated until it comes into contact with the stopper.

[0007]

[Action]

 According to the light source lamp fixing device for a liquid crystal projector of the present invention, when the frame of the light source lamp is brought into contact with the support base and rotated along the guide of the holding member until it comes into contact with the stopper, the frame of the light source lamp is held by the holding member. It is pressed against and fixed to the supporting table by the plate spring.

Since the holding member is made of highly heat-resistant polyimide resin, the elasticity of the leaf spring is sufficiently retained even when heated by the heat generated by the light source lamp, and the light source lamp frame is pressed against the support base with sufficient force. The position is stabilized. Also, since the leaf spring, stopper, guide, etc. can be integrally molded, the number of parts is reduced and the number of assembling steps is reduced.

Further, since the light source lamp can be removed from the holding member by rotating in the opposite direction to that at the time of assembly, the lamp can be easily replaced.

[0010]

【Example】

 A light source lamp fixing device for a liquid crystal projector, which is an embodiment of the present invention, will be described with reference to the drawings. As shown in FIG. 1, the holding members 3 and 4 are fastened to the support base 2 with screws 5, 5, .... The support base 2 is fixed by screws 6, 6 so that the center of the light source lamp is aligned with the light source position of the liquid crystal projector body. The holding member 3 is formed of thermosetting polyimide resin so that the leaf springs 3a, 3a, the stoppers 3b, 3b and the guide 3c are integrated. As the polyimide resin used as the material of the holding member 3, polyetherketoneketone (PEEK), polyetherketone (PEK), polyketonesulfide (PKS), or the like is suitable. The holding member 4 is the same component as the holding member 3.

The light source lamp frame 1 is provided with four notches, which are inserted so that the notches come to the positions of the leaf springs and the stoppers of the holding members 3 and 4, and rotated. Let At this time, the outer periphery of the light source lamp frame 1 is guided by the guides 3c and 4c of the holding members 3 and 4.

The state is shown in FIG. When the light source lamp frame is rotated from the position shown in FIG. 2 (a), the protrusion 1a of the light source lamp frame is inserted under the plate ridge 3a as shown in FIG. ), The stopper 3b is hit to stop. The state is shown in detail in FIG. In this state, the light source lamp frame is fixed by being pressed against the support base with four leaf springs.

FIG. 3B shows a modified example of the leaf spring. In this case, the hook provided on the leaf spring prevents the light source lamp frame from rotating in the opposite direction, and further supports it firmly. It is fixed to the pedestal.

When replacing the light source lamp frame 1, the light source lamp frame 1 can be removed by rotating it in the direction opposite to the assembling.

[0015]

[Effect of the device]

 According to the light source lamp fixing device for a liquid crystal projector of the present invention, the number of parts is reduced and the number of assembling steps is reduced.

Furthermore, lamp replacement becomes extremely easy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a fixing device of a light source lamp for a liquid crystal projector which is an embodiment of the present invention.

FIG. 2 is a partial side view showing the operation of the same embodiment.

FIG. 3 (a) is a partial cross-sectional view showing the same embodiment, FIG.
(B) is a fragmentary sectional view showing a modification of the embodiment.

FIG. 4A is an exploded perspective view showing an example of a conventional light source lamp fixing device for a liquid crystal projector, and FIG. 4B is a partial cross-sectional view showing the same light source lamp fixing device for a liquid crystal projector. ..

[Explanation of symbols]

 1 support base 2 light source lamp frame 3 holding member 4 holding member 5 screw 6 screw

Claims (1)

[Scope of utility model registration request] 1. A holding member made of a polyimide resin integrally formed with a leaf spring, a stopper and a guide is provided on a support base, and a frame of a light source lamp is guided by the guide and the support base of the holding member. A light source lamp fixing device for a liquid crystal projector, wherein the leaf spring presses the frame of the light source lamp against a support base when rotated until it comes into contact with the stopper.