TW201430479A - Fixed structure of the projector light bulb - Google Patents

Abstract

This invention provides a fixed structure of the projector light bulb which includes a lamp module, a first shell and a second shell, the lamp module comprise a lamp holder and a lamp reflector, the lamp reflector have a light bulb set internal, the lamp reflector is setting on the lamp holder, the first shell and the second shell lock joint together to construct a outer case, the outer case sets outside around the lamp reflector and fixed on the lamp holder.

Description

Projector bulb fixing structure

The invention relates to a projector lamp fixing structure, in particular to a projector lamp fixing structure which avoids light transmission of a bulb reflector to form stray light and affects optical performance.

The optical engine in the structure of the projector product is an important key component, including a light source lamp and an optical component. The light source lamp is a modular structure, and has a component such as a bulb, a reflector, a lamp holder, and a lamp cup. The bulb is disposed in the reflector, and the glare emitted by the bulb is collected by the reflector to generate a light. The projected beam is illuminated towards the optical element. The bulb is mainly used as a tungsten halogen lamp, a metal halide lamp, an ultra-high pressure mercury lamp or a xenon lamp, and the common characteristics of these lamps are high luminous intensity and brightness. Therefore, when the strong light of the bulb is collected by the reflector, a part of the strong light passes through the reflector to form stray light. The stray light will be scattered through the vents of the projector housing, affecting the image projection screen and the projection environment. Generally, in order to solve the problem of stray light leakage of the light source bulb, a light blocking plate is usually disposed between the fan vent and the bulb reflector, and the stray light is shielded by the light blocking sheet. However, the light blocking sheet is a sheet-like body and is disposed in front of the vent, which not only has a poor shading effect but also affects the cooling performance of the projector. How to improve the shading effect and avoid affecting the cooling efficiency should be studied and improved.

In view of this, it is necessary to provide a projector lamp fixing structure that has good shading effect without affecting heat dissipation operation.

The present invention provides a projector lamp fixing structure, comprising a lamp module, a first casing and a second casing, the lamp module comprising a lamp holder and a reflector, wherein the reflector has a bulb setting The reflector is disposed on the socket, and the first housing is fastened to the second housing to form an outer casing. The outer casing is disposed around the outer side of the reflector and is fixed to the socket.

Compared with the prior art, the projector lamp fixing structure of the present invention, through the outer casing formed by the combination of the first casing and the second casing, is disposed around the outer side of the reflector, and can completely cover the reflector. Divergence of stray light, while avoiding blocking the projector's cooling airflow and improving the quality of the projector.

10. . . Light bulb fixing structure

12. . . Lighting module

122. . . Lamp holder

124. . . Reflector

1242. . . Connector

14. . . First housing

142. . . Side panel

1422. . . First plate

1424, 1624. . . Curved surface

1426, 1626. . . Screw hole

144. . . Backplane

146. . . Upper cover

1462. . . Hole

1464. . . Slot

16. . . Second housing

162. . . Ger

1622. . . Second plate

164. . . Connection plate

1642. . . Notch

1644. . . Hook

17. . . Screw

18. . . shell

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing an embodiment of a projector lamp fixing structure of the present invention.

2 is a schematic view of the first housing assembly of the projector lamp securing structure of FIG. 1.

3 is a schematic view of the second housing assembly of the projector lamp securing structure of FIG. 1.

The present invention will be specifically described below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a schematic diagram of an embodiment of a projector lamp fixing structure according to the present invention. The lamp fixing structure 10 includes a lamp module 12, a first casing 14 and a second casing 16. The lamp module 12 includes a lamp holder 122 and a reflector cover 124. The reflector cover 124 has a reflector cover 124 therein. A light bulb (which is not shown in the drawings for the prior art) is disposed on the socket 122. The first housing 14 is fastened to the second housing 16 to form a housing 18. The outer casing 18 is disposed around the outer side of the reflector 124 and is fixed to the socket 122. The outer casing 18 is disposed around the outer side of the reflector 124, so that the strong light emitted by the bulb may form a stray light through the reflector 124, and all of the light will be blocked by the outer casing 18 without light. Leakage causes the problem of stray light to affect the quality of the projection, and the outer casing 18 is fixed on the socket 122, which does not block the vent of the projector, and does not hinder the cooling airflow formed by the fan inside the projector. Effectively solve the problem that the projector uses a light blocking sheet to cause poor shading efficiency and affect the cooling function.

In this embodiment, the first housing 14 and the second housing 16 are assembled on the socket 122. First, the reflector 124 is disposed on the socket 122, and then the first housing 14 is assembled. The second housing 16 is then assembled. The first housing 14 includes two side plates 142, a back plate 144, and an upper cover plate 146. The two side plates 142 are oppositely disposed. The back plate 144 is disposed between the two side plates 142. The upper cover plate 146 is disposed on the second cover plate 142. The upper plate 142 and the upper end of the back plate 144 have a flared hole 1462 from the front end toward the rear end. The first housing 14 defines a front end and a bottom portion through the two side plates 142, the back plate 144 and the upper cover plate 146. The first housing 14 has an accommodating space therein and a housing having a flared opening 1462 at the upper end. Body (as shown in Figure 2). The first housing 14 can be conveniently disposed on the socket 122 through the front end and the bottom opening. The receiving space inside the first housing 14 and the opening 1462 can make the reflector 124 is located within the first housing 14. The bottom of the two side plates 142 is bent inwardly to form a first pressure plate 1422. The inner edge of the first pressure plate 1422 has a curved surface 1424. The curved surface 1424 is curved with respect to the outer edge of the reflector 124. The front and rear ends of the first pressure plate 1422 are opposite to the edge ends of the reflector 124 to urge the reflector 124 against the socket 122. When the first housing 14 receives the reflector 124 and the reflector 124 abuts the socket 122, the first and second ends of the first platen 1422 respectively have a screw hole 1426 adjacent to the back plate. The screw hole 1426 of the rear end of the 144 is locked by the screw 17, and the assembly of the first housing 14 and the socket 122 is completed.

The second housing 16 includes a front plate 162 and a connecting plate 164. The connecting plate 164 is disposed at an upper end of the front plate 162. The bottom of the front plate 162 is bent inwardly to have a second pressing plate 1622. The connecting plate 164 The leading edge has a notch 1642, and the two sides of the connecting plate 164 respectively have a hook 1644 extending downward (as shown in FIG. 3). The fastening of the second housing 16 to the first housing 14 is such that the hook 1644 is engaged with the slot 1464 of the upper cover 146 of the first housing 14 , and the connecting plate 164 can be The upper cover 146 is attached to the cover. The slot 1464 is disposed at two sides of the slot 1462. After the connecting plate 164 is coupled to the upper cover 146, the recess 1642 and the slot 1462 are formed with holes to allow the end of the reflector 124 to be connected to the connector 1242 of the bulb. Wear out (as shown in Figure 1). After the second housing 16 is fastened to the first housing 14 , the front panel 162 is attached to the opening of the front end of the first housing 14 , so that the front panel 162 is shared with the two side panels 142 and the back panel 144 . Surrounded by the outer side of the reflector 124. The inner edge of the second pressure plate 1622 at the bottom of the front plate 162 has a curved surface 1624. The two ends of the second pressure plate 1622 have a screw hole 1626. The curved surface 1624 is curved opposite to the outer edge of the reflector cover 124. The screw hole 1626 is opposite to the screw hole 1426 of the first side plate 142 of the first side plate 142. The second pressure plate 1622 can be locked to the socket 122 through the screw hole 1726 of the second pressure plate 1622 and the screw hole 1426 of the first pressure plate 1422. The second housing 16 and the first housing 14 are both sheet metal members. The second housing 16 is connected to the outer casing 18 of the first housing 14 through the hooks 1644, and holes are formed at the upper end of the outer casing 18. A baffle is formed around the outer casing 18, and an opening is formed in the bottom of the outer casing 18. An accommodating space is formed inside the outer casing 18, so that the reflecting cover 124 can be completely accommodated in the outer casing 18 while covering the outer side of the reflecting cover 124. Surrounding, the light leaking from the bulb disposed in the reflector 124 can achieve high efficiency shielding effect. Therefore, the fan vent of the projector does not need to be provided with a light blocking plate, and does not hinder the heat dissipation airflow, thereby effectively solving the problems existing in shielding the stray light.

In the projector lamp fixing structure of the present invention, the outer casing 18 formed by connecting the first casing 14 and the second casing 16 can effectively shield the stray light of the bulb, and also the reflector 124 and the lamp. The joint of the seat 122 is more stable. Compared with the current structure for shielding stray light, the light-shielding structure can be simplified, the cost of the light-shielding sheet can be saved, the heat dissipation efficiency of the heat-dissipating airflow can be improved, the optical characteristics can be maintained, and the projector can be improved in quality.

It should be noted that the above-described embodiments are merely preferred embodiments of the present invention, and those skilled in the art can make other changes within the spirit of the present invention. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

10. . . Light bulb fixing structure

12. . . Lighting module

122. . . Lamp holder

124. . . Reflector

1242. . . Connector

14. . . First housing

16. . . Second housing

18. . . shell

Claims (12)

A projector lamp fixing structure includes a lamp module, a first casing and a second casing, the lamp module includes a lamp holder and a reflector, and the reflector has a bulb disposed therein. The cover is disposed on the socket, and the first housing is fastened to the second housing to form an outer casing. The outer casing is disposed around the outer side of the reflector and is fixed to the socket. The projector lamp fixing structure according to claim 1, wherein the first housing comprises two side plates, a back plate and an upper cover plate, the two side plates are oppositely disposed, and the back is disposed between the two side plates. The upper cover is disposed on the two side plates and an upper end of the back plate. The projector lamp fixing structure according to claim 2, wherein the upper cover has a hole from the front end toward the rear end, and the two sides of the hole are provided with slot holes. The projector lamp fixing structure of claim 2, wherein the bottoms of the two side plates are bent inwardly to form a first pressure plate, and the inner edge of the first pressure plate has an arc surface, the curved surface The front and rear ends of the first pressure plate have a screw hole with respect to the outer edge of the reflector, and the front and rear ends of the first pressure plate are opposite to the edge end of the reflector. The projector lamp fixing structure according to claim 2, wherein the first casing is a front end and the bottom is an opening, the interior has an accommodating space, and the upper end is provided with a horn-like casing. The projector lamp fixing structure according to claim 1, wherein the second casing comprises a front plate and a connecting plate, and the connecting plate is disposed at an upper end of the front plate. The projector lamp fixing structure according to claim 6, wherein the bottom of the front plate is bent inwardly to have a second pressing plate, and the inner edge of the second pressing plate has a curved surface, and the second pressing plate has a curved surface. Both ends have a screw hole arrangement. The projector lamp fixing structure of claim 7, wherein the curved surface of the second pressure plate is curved opposite to the outer edge of the reflector, the screw hole of the second pressure plate and the first shell The body is adjacent to the screw holes of the two side plates. The projector lamp fixing structure according to claim 6, wherein the front edge of the connecting plate has a notch, and the two sides of the connecting plate respectively have a hooking arrangement extending downward. The projector lamp fixing structure according to claim 9, wherein the hook is engaged with the slot of the upper cover, and the notch forms a hole opposite to the hole. The projector lamp fixing structure according to claim 7, wherein the second plate screw hole and the first plate screw hole are locked to the lamp holder by the screw. The projector lamp fixing structure according to claim 1, wherein the first casing and the second casing are both sheet metal members.