CN219590661U

CN219590661U - Heat insulation projector

Info

Publication number: CN219590661U
Application number: CN202320498137.9U
Authority: CN
Inventors: 龙常梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-08-25
Anticipated expiration: 2033-03-13

Abstract

The utility model relates to an insulated projector, comprising: the display screen comprises a shell, a light source, a front phenanthrene mirror and a display screen, and is characterized in that a containing cavity is formed in the shell, the light source is arranged on one side of the containing cavity, the front phenanthrene mirror is arranged in the containing cavity and is arranged at intervals with the light source, the display screen is arranged on the other side of the front phenanthrene mirror at intervals, and at least one of the display screen, the front phenanthrene mirror and the light source is provided with a heat insulation film to block heat radiation of non-visible light in the light source to the display screen. According to the heat-insulating projector, at least one of the display screen, the front phenanthrene mirror and the light source is provided with the heat-insulating film, and the invisible light in the light source is blocked by the heat-insulating film, so that the heat radiation of the invisible light to the display screen is isolated, and the temperature rise of the display screen caused by the heat radiation of the invisible light of the light source is avoided.

Description

Heat insulation projector

Technical Field

The utility model relates to the technical field of projectors, in particular to a heat-insulating projector.

Background

In the long-term continuous working state of the projector, a large amount of heat is generated by the light source, so that the temperature inside the projector is too high, particularly, the temperature of a built-in display screen is too high under the long-term irradiation of the light source, at the moment, the output power of the light source can be restrained due to the high temperature of the display screen, and therefore, the brightness degree of the projector after a period of working can be remarkably reduced.

In the prior art, a heat dissipation structure is generally adopted to dissipate heat of a display screen in a projector, but high temperature on the display screen cannot be effectively cooled through a single heat dissipation structure in a limited inner space of the projector, and the display screen is generally subjected to air cooling heat dissipation through the heat dissipation structure, but because the space between the display screen and a light source is limited, the display screen is difficult to insulate and dissipate heat through the limited space, so that the high temperature phenomenon of the display screen is caused.

Therefore, it is necessary to solve the technical problem that the display screen in the projector can simultaneously satisfy heat insulation and heat dissipation.

Disclosure of Invention

The utility model aims to provide a heat-insulating projector, which aims to solve the technical problem that a display screen can simultaneously realize heat insulation and heat dissipation.

To solve the above technical problem, there is provided a heat-insulating projector including: the LED display device comprises a shell, a light source, a front phenanthrene mirror and a display screen, and is characterized in that an accommodating cavity is formed in the shell, the light source is arranged on one side of the accommodating cavity, the front phenanthrene mirror is arranged in the accommodating cavity and is arranged with the light source at intervals, the display screen is spaced from the light source to be arranged on the other side of the front phenanthrene mirror, and at least one of the display screen, the front phenanthrene mirror and the light source is provided with a heat insulation film to block heat radiation of non-visible light in the light source to the display screen.

Further, the light source comprises a light outlet window, the light outlet window is arranged towards the front phenanthrene mirror, and the light outlet window is plated with a heat insulation film.

Further, the front phenanthrene mirror comprises a light surface and a concentric circle surface arranged opposite to the light surface, wherein the light surface is plated with a heat insulation film.

Further, the display screen comprises a light receiving surface arranged close to one side of the light source, wherein the light receiving surface is plated with a heat insulation film.

Further, the heat insulation film is a light-transmitting heat insulation material film.

Further, an air supply channel is formed in the accommodating cavity and is communicated between the display screen and the front phenanthrene mirror to radiate heat of the display screen and the front phenanthrene mirror.

Further, the front phenanthrene mirror and the display screen form a first heat dissipation channel at intervals, the front phenanthrene mirror and the light source form a second heat dissipation channel at intervals, and the first heat dissipation channel and the second heat dissipation channel are respectively communicated with the air supply channel.

Further, the projector further comprises a fan, the shell is provided with an air inlet, the fan is arranged in the accommodating cavity close to the air inlet, and the fan is used for blowing air to the air supply channel.

Further, the projector further comprises a heat dissipation piece, and the heat dissipation piece is abutted to the light source.

Further, the projector further comprises a rear phenanthrene mirror, a reflecting mirror and a lens, wherein the rear phenanthrene mirror is opposite to the light-emitting window and is arranged at intervals with the display screen, the display screen is positioned between the rear phenanthrene mirror and the front phenanthrene mirror, and the reflecting mirror is obliquely aligned with the light-emitting window and the lens so that an image of the display screen is reflected to the lens to be projected outwards through the reflecting mirror.

The implementation of the embodiment of the utility model has the following beneficial effects:

in the heat-insulating projector, as at least one of the display screen, the front phenanthrene mirror and the light source is provided with the heat-insulating film, the non-visible light in the light source is blocked by the heat-insulating film, so that the heat radiation of the non-visible light to the display screen is isolated, the temperature rise of the display screen caused by the heat radiation of the non-visible light of the light source is avoided, and the problem that the display screen in the projector is difficult to simultaneously satisfy heat insulation and heat dissipation in the prior art is overcome.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a projector according to an embodiment of the utility model;

FIG. 2 is an exploded view of a projector according to an embodiment of the utility model;

FIG. 3 is a top view of a housing according to an embodiment of the present utility model;

fig. 4 is a schematic view of a structure of a projector according to an embodiment of the utility model with an upper cover of a housing removed;

FIG. 5 is a top view of a projector according to an embodiment of the utility model with an upper cover of a housing removed;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a bottom view of the projector according to the embodiment of the utility model with the housing lower cover removed;

fig. 8 is a schematic structural diagram of a light source according to an embodiment of the utility model.

Wherein: 100. a heat-insulating projector; 110. a housing; 111. a receiving chamber; 1111. an air supply channel; 1112. a first heat dissipation channel; 1113. a second heat dissipation channel; 112. an air inlet; 120. a light source; 121. a light exit window; 130. a front phenanthrene mirror; 140. a display screen; 141. a light receiving surface; 150. a heat insulating film; 160. a blower; 170. a heat sink; 180. a rear phenanthrene mirror; 190. a reflective mirror; 200. and a lens.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-8, an embodiment of the present utility model provides an insulated projector 100, comprising: the display device is characterized in that an accommodating cavity 111 is formed on the shell 110, the light source 120 is arranged on one side of the accommodating cavity 111, the front phenanthrene mirror 130 is arranged in the accommodating cavity 111 and is arranged at intervals with the light source 120, the display screen 140 is arranged on the other side of the front phenanthrene mirror 130 at intervals with the light source 120, and at least one of the display screen 140, the front phenanthrene mirror 130 and the light source 120 is provided with a heat insulation film 150 to block heat radiation of non-visible light in the light source 120 to the display screen 140. In a specific application, in the projector, because the positions of the display screen 140, the front phenanthrene mirror 130 and the light source 120 are closer, the heat dissipation effect of the display screen 140 is not ideal in a limited space, so that the non-visible light (infrared light and ultraviolet light) of the light source 120 radiates heat to the display screen 140, and further the temperature rise caused by the fact that the display screen 140 cannot dissipate heat in time is caused, and in order not to change the distance between the display screen 140, the front phenanthrene mirror 130 and the light source 120, the display screen 140 needs to be effectively insulated, so that the service life of the display screen 140 is prolonged, and the flow brightness of the insulated projector 100 is improved.

In this case, at least one of the display screen 140, the front phenanthrene mirror 130 and the light source 120 is provided with the heat insulation film 150, so that the heat radiation of the non-visible light in the light source 120 to the display screen 140 is blocked, and it is worth noting that, as the heat insulation film 150 can effectively isolate the heat radiation of the non-visible light to the display screen 140, when the output power of the light source 120 is increased, the light intensity of the visible light at the light source 120 is enhanced and the heat radiation of the non-visible light is also enhanced, and as the heat insulation film 150 blocks the non-visible light, the enhanced visible light part can pass through the front phenanthrene mirror 130 to irradiate to the display screen 140, so as to improve the flow brightness of the heat insulation projector 100.

In one possible embodiment, the light source 120 includes a light-emitting window 121, the light-emitting window 121 is disposed toward the front phenanthrene mirror 130, and the light-emitting window 121 is coated with a heat insulating film 150. In a specific application, in order to block heat radiation of the non-visible light at the light source 120 to the display screen 140 from the source, the light outlet window 121 of the light source 120 disposed towards the front phenanthrene mirror 130 is coated with a heat insulation film 150, where the heat insulation film 150 is used to block the non-visible light, and allow the visible light to pass through and irradiate onto the display screen 140.

In one possible embodiment, the front phenanthrene mirror 130 includes concentric circular surfaces disposed on a light surface (not shown) and an opposite light surface (not shown), wherein the light surface is coated with a thermal barrier film 150. In a specific application, the front Fresnel lens 130 is also called Fresnel lens (Fresnel lens), or a threaded lens, and is mostly made of a thin sheet made of a polyolefin material by injection molding, and also made of glass, one surface of the lens is a smooth surface, a heat insulation film 150 can be optionally plated on the smooth surface, and a concentric circle surface from small to large is inscribed on the other surface, and the texture of the heat insulation film is designed according to the interference and the interference of light, and the requirements of relative sensitivity and receiving angle.

In one possible embodiment, the display screen 140 includes a light receiving surface 141 disposed near a side of the light source 120, wherein the light receiving surface 141 is coated with the heat insulating film 150. In a specific application, the light receiving surface 141 of the display screen 140 near the light source 120 may be optionally coated with a heat insulating film 150 for blocking the heat radiation of the light source 120 to the display screen 140.

In one possible embodiment, the thermal barrier film 150 is a light transmissive thermal barrier film. In a specific application, in order to avoid the influence of the heat insulating film 150 on the visible light of the light source 120, the heat insulating film 150 is selected to be a heat insulating material film with good light transmittance.

In one possible embodiment, an air supply channel 1111 is formed in the accommodating chamber 111, and the air supply channel 1111 communicates between the display screen 140 and the front phenanthrene mirror 130 for dissipating heat from the display screen 140 and the front phenanthrene mirror 130. In a specific application, in order to improve the heat dissipation efficiency of the front phenanthrene mirror 130 and the display screen 140, an air supply channel 1111 communicating with the outside is formed in the accommodating cavity 111, and the air supply channel 1111 communicates between the display screen 140 and the front phenanthrene mirror 130, so as to improve the heat dissipation efficiency of the display screen 140 and the front phenanthrene mirror 130.

In one possible implementation, the front phenanthrene mirror 130 and the display screen 140 are spaced to form a first heat dissipation channel 1112, the front phenanthrene mirror 130 and the light source 120 are spaced to form a second heat dissipation channel 1113, and the first heat dissipation channel 1112 and the second heat dissipation channel 1113 are respectively communicated with the air supply channel 1111. In a specific application, in order to further improve the heat dissipation efficiency of the front phenanthrene mirror 130 and the display screen 140, the front phenanthrene mirror 130 and the display screen 140 are spaced to form a first heat dissipation channel 1112, so that heat on one side of the front phenanthrene mirror 130 is quickly dissipated through the first heat dissipation channel 1112, and a second heat dissipation channel 1113 is formed on the other side of the front phenanthrene mirror 130 and one side of the light source 120 at intervals, so that heat on one side of the light source 120 and the other side of the front phenanthrene mirror 130 is dissipated through the second heat dissipation channel 1113, and then hot air of the first heat dissipation channel 1112 and hot air of the second heat dissipation channel 1113 leave the projector through the air supply channel 1111.

In one possible embodiment, the projector further includes a blower 160, the housing 110 is provided with an air inlet 112, and the blower 160 is disposed in the accommodating chamber 111 near the air inlet 112, wherein the blower 160 is used to blow air to the air supply channel 1111. In a specific application, in order to improve the heat dissipation efficiency of the air supply channel 1111, the housing 110 is provided with an air inlet 112, and the fan 160 is disposed near the air inlet 112 and in the accommodating cavity 111, and the fan 160 is used for blowing air to the air supply channel 1111 to take out the hot air therein.

In one possible embodiment, the projector further includes a heat sink 170, and the heat sink 170 abuts against the light source 120. In a specific application, since the light source 120 is a heat source inside the projector, the heat dissipation of the light source 120 is required by the heat dissipation member 170, and in order to improve the heat dissipation efficiency of the light source 120, the air supply channel 1111 is connected to the heat dissipation member 170, and the hot air near the heat dissipation member 170 is taken out.

In one possible embodiment, the projector further includes a rear phenanthrene mirror 180, a reflective mirror 190, and a lens 200, the rear phenanthrene mirror 180 is disposed opposite to the light-emitting window 121 and spaced apart from the display screen 140, and the display screen 140 is located between the rear phenanthrene mirror 180 and the front phenanthrene mirror 130, and the reflective mirror 190 is obliquely aligned with the light-emitting window 121 and the lens 200, so that an image of the display screen 140 is reflected to the lens 200 by the reflective mirror 190 for projection. In a specific application, in order to reduce the volume of the projector, the volume of the projector is miniaturized, the projector is convenient for indoor use, the rear phenanthrene mirror 180 is arranged opposite to the light-emitting window 121 and the display screen 140 at intervals, the display screen 140 is positioned between the rear phenanthrene mirror 180 and the heat insulation sheet, the reflector 190 is obliquely aligned with the light-emitting window 121 and the lens 200, so that an image of the display screen 140 is reflected to the lens 200 through the reflector 190 for outward projection, and a corner structure is formed, so that the projector is miniaturized under the condition of meeting the heat dissipation requirement.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An insulated projector, comprising: the LED display device comprises a shell, a light source, a front phenanthrene mirror and a display screen, and is characterized in that an accommodating cavity is formed in the shell, the light source is arranged on one side of the accommodating cavity, the front phenanthrene mirror is arranged in the accommodating cavity and is arranged with the light source at intervals, the display screen is spaced from the light source to be arranged on the other side of the front phenanthrene mirror, and at least one of the display screen, the front phenanthrene mirror and the light source is provided with a heat insulation film to block heat radiation of non-visible light in the light source to the display screen.

2. The heat shield projector according to claim 1, wherein the light source includes a light-emitting window that is disposed toward the front phenanthrene mirror, and the light-emitting window is coated with a heat shield film.

3. The insulated projector of claim 1, wherein the front phenanthrene mirror comprises a light surface and a concentric circular surface disposed opposite the light surface, wherein the light surface is coated with an insulating film.

4. The heat shield projector of claim 1, wherein the display screen includes a light receiving surface disposed adjacent to a side of the light source, wherein the light receiving surface is coated with a heat shield film.

5. The heat shield projector of any of claims 1-4, wherein the heat shield film is a light transmissive heat shield film.

6. The heat shield projector according to claim 1, wherein an air supply channel is formed in the accommodating cavity, and the air supply channel is communicated between the display screen and the front phenanthrene mirror and used for radiating heat from the display screen and the front phenanthrene mirror.

7. The heat shield projector of claim 6, wherein the front phenanthrene mirror is spaced from the display screen to form a first heat sink channel, the front phenanthrene mirror is spaced from the light source to form a second heat sink channel, and the first heat sink channel and the second heat sink channel are in communication with the air supply channel, respectively.

8. The heat shield projector of claim 7, further comprising a blower, wherein the housing is provided with an air inlet, wherein the blower is disposed in the receiving chamber proximate the air inlet, and wherein the blower is configured to blow air to the air supply channel.

9. The insulated projector of claim 1, further comprising a heat sink, the heat sink abutting the light source.

10. The insulated projector of claim 2, further comprising a rear phenanthrene mirror, a reflective mirror, and a lens, wherein the rear phenanthrene mirror is disposed opposite the light exit window and spaced apart from the display screen, and the display screen is positioned between the rear phenanthrene mirror and the front phenanthrene mirror, and wherein the reflective mirror is obliquely aligned with the light exit window and the lens such that an image of the display screen is projected outward through reflection of the reflective mirror to the lens.