JP3492907B2 - Fixing device for lamp reflector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a lamp reflector fixing device suitable for application to a projector device such as a liquid crystal projector which projects enlarged image information. 2. Description of the Related Art A projector device such as a liquid crystal projector irradiates a film, a photographic film, or a liquid crystal panel with light emitted from a high-intensity light source, and enlarges and transmits transmitted light or reflected light on a screen. is there. As a high-luminance light source, a metal halide lamp in which a metal halide or the like is sealed, a xenon lamp in which xenon gas is sealed, and the like are generally used.
Light emitted from these lamps is reflected by the reflector and converted into parallel light substantially parallel to the optical axis. The reflector is generally made of glass, has a rotating parabolic reflection surface formed by evaporating aluminum or the like on its inner surface, and is fixed to the lamp case with screws. However, in the structure in which the reflector for a lamp is fixed by screwing, the number of parts is large for screwing, and the work of tightening the screw is required. However, there is a problem that it is complicated and takes time. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an apparatus for fixing a reflector for a lamp in which the reflector can be easily fixed with a minimum number of parts and with one touch. I do. According to a first aspect of the present invention, there is provided a reflector having a reflecting surface on an inner surface, a lamp case provided with first and second locking portions, and A lamp reflector having a spring member bent into a predetermined shape for fixing the reflector in the lamp case by pressing the back surface of the reflector by being pressed by the first and second locking portions.
The spring member comprises a straight portion and two ends of the straight portion.
A pair of rising portions bent at substantially right angles and each standing
The end of the rising part is bent in the direction almost perpendicular to the straight part
The first locking portion is provided integrally with the formed locking piece.
And a pair of locking holes provided in the bottom plate of the case.
A pair of rising parts of the spring member
Placed inside the lamp case through a pair of locking holes
And the spring member is locked by the second locking portion of the lamp case.
The piece is locked . According to the present invention, the reflector is elastically pressed and fixed in the lamp case by the spring member. Further, since the linear portion of the spring member is locked by the pair of locking holes of the lamp case, the operation of locking the locking piece of the spring member to the locking portion of the lamp case becomes easy. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a fixing device for a lamp reflector according to a first embodiment of the present invention, and FIG. 2 is a partial side view thereof. 1 and 2, reference numeral 1 denotes an elliptical cross section, a step 5 is provided on the outer peripheral edge of the front opening, a paraboloid of revolution is formed on the inner surface, and a metal halide lamp is provided at the focal position. A reflector 2 made of glass disposed and a lamp case 2 for storing and fixing the reflector 1 and a spring member 3 formed by bending the reflector 1 into a predetermined shape and pressing the back surface 4 of the reflector 1 to fix it to the lamp case 2 (fixing) Metal fittings)
It is. The lamp case 2 has a front plate 2 having an opening having substantially the same diameter as the opening on the front side of the reflector 1.
a, a pair of side plates facing each other, and a bottom plate 2b. A pair of right and left locking holes 6a and 6b (first locking portions) are provided above the opening of the front plate 2a, and a pair of right and left locking holes 7a and 7b (second locking member) are provided in the bottom plate 2b. Stop). The spring member 3 is formed by bending a highly elastic wire, for example, a piano wire having an appropriate diameter, into a shape as shown in FIG. That is, the spring member 3 includes a straight portion 3a, a pair of rising portions 3b and 3c bent substantially at right angles from both ends of the straight portion 3a, and each of the rising portions 3a.
Locking pieces 3d and 3e are formed integrally by bending the ends of b and 3c in a direction substantially orthogonal to the linear portion 3a.
The linear portion 3a and the pair of rising portions 3b, 3c are bent in a substantially U-shape, and the locking pieces 3d, 3e are bent in a substantially L-shape. A pair of rising portions 3b, 3 of the spring member 3
c is inserted from the outside of the lamp case 2 into the pair of locking holes 7a, 7b of the bottom plate 2b and is disposed in the lamp case 2 so that the linear portion 3a of the spring member 3 becomes a pair of locking holes 7a of the lamp case 2. , 7b, the locking pieces 3d, 3e of the spring member 3 are inserted and locked into a pair of locking holes 7a, 7b of the front plate 2a of the lamp case 2, and a pair of rising portions 3b of the spring member 3 are locked. , 3c press the back surface 4 of the reflector 1 in pressure, whereby the reflector 1 is fixed to the inner surface of the bottom plate 2b of the lamp case 2. In order to fix the reflector 1, first, the reflector 1 is placed on the inner surface of the bottom plate 2b so that the front opening is aligned with the opening of the front plate 2a, and the pair of rising portions 3b, 3c of the spring member 3 is set. The pair of locking holes 7a of the front plate 2a of the lamp case 2 are inserted by inserting the locking pieces 3d and 3e of the spring member 3 into the pair of locking holes 7a of the bottom plate 2b. , 7b. Thereby, the pair of rising portions 3b, 3c of the spring member 3
Presses the back surface 4 of the reflector 1 elastically, so that the reflector 1 can be fixed to the lamp case 2 stably and reliably. As described above, according to the above-described lamp reflector fixing device, the reflector 1 is fixed to the lamp case 2 by one spring member 3 without using a set screw. 1 lamp case 2
The mounting work can be performed with one touch, and the mounting work is simple and easy. Further, in the process of attaching the reflector 1 to the lamp case 2, the spring member 3 is securely locked by the pair of locking holes 7a, 7b, so that the locking pieces 3d, 3e of the spring member 3 are fixed to the front plate 2a. A pair of locking holes 7a,
The work of inserting and locking into 7b is facilitated, and workability can be greatly improved. According to the lamp reflector fixing device of the present invention, since the reflector is elastically pressed and fixed in the lamp case by the spring member, the reflector can be easily fixed with a minimum number of parts. . Further, since one end of the spring member is securely locked in the process of attaching the reflector 1 to the lamp case 2, the workability of locking the other end of the spring member can be greatly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a fixing device for a lamp reflector according to a first embodiment of the present invention. FIG. 2 is a partial side view of FIG. 1; [Description of Signs] 1 ... Reflector 2 ... Lamp case 3 ... Spring members 6a, 6b, 7a, 7b ... Lock holes

Claims (1)

(57) [Claim 1] A reflector having a reflecting surface on an inner surface, a lamp case provided with first and second locking portions, and the first and second locking portions. the back of the locked the reflector pressed against the run and a spring member bent into a predetermined shape for fixing the reflector in the lamp case
A fixing device of the reflector for flop, said spring member is a substantially right angle from both ends of the the linear portion straight portion
The pair of rising portions bent into
The end of the bent part is bent in a direction substantially perpendicular to the straight part.
The first locking portion is provided integrally with the formed locking piece.
From a pair of locking holes provided in the bottom plate of the lamp case
And a pair of rising portions of the spring member is connected to the ramp.
From the outside of the case through the pair of locking holes
The lamp case and a second one of said lamp case.
A fixing device for a reflector for a lamp, wherein a locking piece of the spring member is locked by the locking portion .