CN217879951U

CN217879951U - Projection light machine

Info

Publication number: CN217879951U
Application number: CN202222295102.3U
Authority: CN
Inventors: 姚春丽; 曹国勇
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-11-22
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a projection ray apparatus, be in the light including casing and heat dissipation, the casing is formed with the mounting groove, is provided with the prism in the mounting groove, and the prism includes incident light face and emergent light face, and the contained angle department that incident light face and emergent light face are connected forms the excessive light end, and the heat dissipation is in the light and is included interconnect's heat dissipation section and the section of being in the light, and the section of being in the light is around excessive light end setting, and the heat dissipation section is installed in the casing. Through setting up a heat dissipation light blocking member, the heat dissipation light blocking member is made by the heat conduction material, the heat dissipation light blocking member includes the heat dissipation section and the section that is in the light, the section that is in the light is around excessive light end setting for the light that jets out from excessive light end is blocked by the section that is in the light, prevents revealing of light, and the energy that light struck to the section that is in the light is absorbed by the section that is in the light, and the heat of production is transmitted to the heat dissipation section from the section that is in the light and is diffused to the air, reduces the inside temperature of projection ray apparatus. The projection light machine has the advantages of effectively realizing heat dissipation, reducing the internal temperature and ensuring the definition of a projection picture.

Description

Projection light machine

Technical Field

The utility model relates to a digital projection technical field especially relates to a projection ray apparatus.

Background

Along with the market share of the projection light machines is more and more, the types of the projection light machines are gradually increased, and the image quality is clearer. In the case of a digital projection optical device, when a black field is projected, light from the illumination system is projected into the optical device, and usually strikes the optical device body near the prism, and this state of light is referred to as OFF light. This may cause light leakage and cause the projection image to be unclear. In addition, for the optical machine main body made of plastic, the temperature resistance is relatively poor. When OFF light hits the plastic main body, the temperature of the plastic main body can rise, and the excessive temperature can cause the plastic main body to expand and deform, so that the positioning of the optical machine lens can be influenced; in addition, the light irradiation can cause the light of the main body to separate out volatile matters, and the cleanliness of the inner lens of the projection light machine is seriously influenced.

Therefore, there is a need for a new optical projection engine to solve or at least alleviate the above technical drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a projection ray apparatus, the dark field light of projection ray apparatus that aims at solving among the prior art causes ray apparatus temperature to rise and the unclear technical problem of projection picture.

In order to realize the above-mentioned purpose, the utility model provides a projection ray apparatus, be in the light including casing and heat dissipation, the casing is formed with the mounting groove, be provided with the prism in the mounting groove, the prism includes incident light face and emergent light face, the incident light face with the contained angle department that the emergent light face is connected forms the excessive light end, the heat dissipation is in the light and is made by the heat conduction material, the heat dissipation is in the light and is included interconnect's heat dissipation section and the section of being in the light, the light section that keeps off centers on the excessive light end sets up, the heat dissipation section install in the casing.

In an embodiment, the light blocking section includes a first light blocking plate and a second light blocking plate which are bent, the first light blocking plate and the second light blocking plate are connected to form a containing groove, and the light overflow end is disposed in the containing groove.

In one embodiment, the light blocking section surface is coated with a black paint layer.

In an embodiment, the heat dissipation section includes a connection plate and heat dissipation fins, the connection plate is connected to the light blocking section, the connection plate is mounted on the housing, and the heat dissipation fins are disposed on a side of the connection plate away from the housing.

In one embodiment, the number of the heat dissipation fins is multiple, and the multiple heat dissipation fins are arranged on the connecting plate at intervals.

In an embodiment, the number of the heat dissipation fins is multiple, two adjacent heat dissipation fins form a heat dissipation air duct, and the direction of the heat dissipation air duct is the same as the direction of the air path of the housing.

In an embodiment, the housing further includes a mounting position formed below the connecting plate, a galvanometer is disposed in the mounting position, and a heat conducting member is disposed on a side of the connecting plate facing the galvanometer.

In one embodiment, the connecting plate is formed with a mounting hole, and the connecting plate is connected with the housing through a threaded fastener so as to attach the connecting plate, the heat conducting member and the galvanometer.

In an embodiment, the casing further includes an upper cover, the upper cover is disposed on the mounting groove, the projection optical machine further includes a mylar sheet, and the mylar sheet is attached to a seam between the heat dissipation light blocking member and the upper cover.

In an embodiment, the optical projection engine further includes a lens and a lens, the lens is mounted on the housing, the emergent light surface faces the lens, the lens is disposed in the mounting groove, and the lens faces the incident light surface.

In the above scheme, the projection ray apparatus includes that casing and heat dissipation are in the light piece, and the casing is formed with the mounting groove, is provided with the prism in the mounting groove, and the prism includes incident light face and emergent light face, and the contained angle department that incident light face and emergent light face are connected forms excessive light end, and the heat dissipation is in the light the piece and is included interconnect's heat dissipation section and the section of being in the light, and the section of being in the light is around excessive light end setting, and the heat dissipation section is installed in the casing. The utility model discloses a set up a heat dissipation light blocking member, heat dissipation light blocking member is made by the heat conduction material, heat dissipation light blocking member includes the heat dissipation section and the section that is in the light, the section that is in the light centers on excessive light end setting, make the light that jets out from excessive light end blocked by the section that is in the light, prevent revealing of light, and the energy that light struck to the section that is in the light is absorbed by the section that is in the light, the heat of production is from the section transmission that is in the light to the heat dissipation section and giving OFF in the air, and the section that is in the light itself also can absorb the heat that radiates out from the prism, avoided causing the too high phenomenon of temperature in the projection ray apparatus because of the OFF light. The utility model discloses a can shelter from the OFF light in black field to derive the heat that OFF produced from the projection ray apparatus is inside, the heat dissipation is in the light of piece and is in an organic whole with the heat dissipation, has both realized sheltering from of ray apparatus dark field light, has reduced the too high problem of inside temperature because of light brings again, and this utility model has the advantages of can effectively dispel the heat, reduce the temperature of projection ray apparatus, ensure that the projection picture is clear.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a projection optical machine according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a projection optical machine according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

fig. 4 is a schematic perspective view of a lens, a prism and a heat-dissipating and light-blocking member according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a heat dissipation light-blocking member according to an embodiment of the present invention;

fig. 6 is a schematic view of a partial three-dimensional structure of a projection light machine according to an embodiment of the present invention.

The reference numbers indicate:

100. a projection light machine; 1. a housing; 2. a heat dissipation light blocking member; 21. a heat dissipation section; 211. a connecting plate; 2111. mounting holes; 212. heat dissipation fins; 213. a heat dissipation air duct; 22. a light blocking section; 221. a first light barrier; 222. a second light blocking plate; 223. accommodating a tank; 3. mounting grooves; 4. a prism; 41. a light incident surface; 42. an emergent light surface; 43. a light overflow end; 5. an installation position; 6. a galvanometer; 7. a threaded fastener; 8. an upper cover; 9. mylar; 10. a lens; 11. a lens.

The purpose of the present invention, its functional features and advantages will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper and lower 8230; etc.) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention.

Referring to fig. 1 to 6, the utility model provides a projection ray apparatus 100, including casing 1 and heat dissipation light barrier 2, casing 1 is formed with mounting groove 3, is provided with prism 4 in the mounting groove 3, and prism 4 includes incident plain noodles 41 and emergent plain noodles 42, and the contained angle department that incident plain noodles 41 and emergent plain noodles 42 are connected forms excessive light end 43, and heat dissipation light barrier 2 is made by the heat conduction material, and heat dissipation light barrier 2 includes interconnect's heat dissipation section 21 and the section of being in the light 22, and the section of being in the light 22 sets up around excessive light end 43, and heat dissipation section 21 is installed in casing 1.

It should be noted that the projection optical machine 100 includes a housing 1, a mounting groove 3 is formed in the housing 1, a light source, a lens 11, a prism 4 and a DMD chip are arranged in the mounting groove 3, the lens 11 may be a plastic lens, a lens 10 is further arranged on the housing 1, the light source may be an LED lamp arranged in the housing 1, light emitted by the light source is incident from an incident light surface 41 of the prism 4 after passing through the lens 11, and is emitted from an exit light surface 42 after being modulated by the prism 4 and the DMD chip, the exit light surface 42 is arranged facing the lens 10, and light emitted from the exit light surface 42 enters the lens 10. In the case of white field and gray field, the light will be totally emitted from the light-emitting surface 42 and enter the lens 10, but in the case of black field (i.e. dark field), the emitted light is called OFF light, and a part of the light will be emitted from the connection position of the light-emitting surface 42 and the light-incident surface 41, that is, the light-leaking end 43 formed by the light-incident surface 41 and the light-emitting surface 42 will leak out, and the temperature in the light machine housing 1 will rise and the projected picture will be unclear due to the light leakage. In addition, the temperature of the prism 4 is the highest relative to other lens bodies of the projection optical apparatus 100, and the prism itself releases heat to the inside of the optical apparatus by radiation, which causes the temperature of the optical apparatus to increase. This embodiment is through setting up a heat dissipation light blocking member 2, heat dissipation light blocking member 2 is made by the heat conduction material, can conduct heat, heat dissipation light blocking member 2 includes heat dissipation section 21 and light blocking section 22, light blocking section 22 sets up around excessive light end 43, make the light that jets out from excessive light end 43 blocked by light blocking section 22, prevent revealing of light, and the energy that light jetted to light blocking section 22 is absorbed by light blocking section 22, the heat of production is in the air from heat dissipation section 21 of transferring to of light blocking section 22, light blocking section 22 itself also can absorb the heat of radiating out from prism 4, avoided causing the too high phenomenon of temperature in the projection ray apparatus 100 because of the OFF light. This embodiment can shelter from the OFF light in black field to derive the heat that OFF produced from projection ray apparatus 100 is inside, the heat dissipation is in the light 2 and is in the light and dispel the heat in an organic whole, has both realized sheltering from of ray apparatus dark field light, has reduced the too high problem of inside temperature because of light brings again, especially to the projection ray apparatus 100 of plastic main part, and it is better to improve the effect, can effectively dispel the heat, reduces the inside temperature of projection ray apparatus 100, ensures the clear advantage of projection picture. Moreover, the embodiment does not need to add an additional heat dissipation structure, and the manufacturing cost is reduced.

Referring to fig. 2 to 5, in an embodiment, the heat dissipation section 21 includes a first light barrier 221 and a second light barrier 222 that are bent, the first light barrier 221 and the second light barrier 222 are connected to form a receiving groove 223, and the light overflowing end 43 is disposed in the receiving groove 223. Specifically, the first light barrier 221 and the second light barrier 222 are integrally formed, so that the light leakage phenomenon at the bending position can be avoided. The surface of the light blocking section 22 is coated with a black paint layer, and specifically, a surface treatment of black paint can be adopted on one side of the light blocking section 22 facing the light overflowing end 43, so that stray light and heat can be effectively absorbed, the contrast of the projection light machine 100 is improved, and the heat dissipation effect is increased. The light-overflowing end 43 is disposed in the accommodating groove 223, so that the light emitted from the light-overflowing end 43 can be shielded and absorbed by the light-blocking section 22 as much as possible.

Specifically, the heat radiation and light blocking member 2 is made of an aluminum alloy. Theoretically, the heat dissipation and light blocking member 2 may be made of a material with a good heat dissipation effect, such as copper, aluminum, or silver. However, the heat dissipation effect, the manufacturing cost, and the weight of the projection optical device 100 are considered, and the device may be made of aluminum alloy. The aluminum alloy has good heat dissipation effect, low manufacturing cost and light weight.

Referring to fig. 2 to 5, in an embodiment, the heat dissipating section 21 includes a connecting plate 211 and heat dissipating fins 212, the connecting plate 211 is connected to the light blocking section 22, the connecting plate 211 is mounted on the housing 1, and the heat dissipating fins 212 are disposed on a side of the connecting plate 211 away from the housing 1. The heat dissipation fins 212 can increase the heat dissipation area, enhance the convection heat dissipation effect, and improve the heat dissipation efficiency.

Referring to fig. 5, in an embodiment, the number of the heat dissipation fins 212 is multiple, and the multiple heat dissipation fins 212 are arranged at intervals on the connection plate 211. The heat dissipation fins 212 may be arranged at intervals along the length direction of the connection plate 211, at intervals along the width direction of the connection plate 211, or at any angle with respect to the connection plate 211. The arrangement of the plurality of heat dissipation fins 212 can further increase the effective heat dissipation area of the heat dissipation section 21, and the heat dissipation air channel 213 formed between two adjacent heat dissipation fins 212 can effectively accelerate the air flow and improve the heat dissipation efficiency. The direction of the heat dissipation air duct 213 is the same as the direction of the air path of the housing 1. The same air path as the casing 1 means the same air path direction as the whole projector 100, which is more favorable for the air flow of the heat dissipation air duct 213 and improves the heat dissipation effect.

Referring to fig. 6, in an embodiment, the housing 1 further includes a mounting location 5 formed below the connecting plate 211, the mounting location 5 may be a groove, the galvanometer 6 is disposed in the mounting location 5, and a heat conducting member is disposed on a side of the connecting plate 211 facing the galvanometer 6. The galvanometer 6 is used for changing the emitted light from one pixel point into two pixel points, so that the imaging definition is improved. In the use, mirror 6 that shakes can generate heat equally, consequently, can be through setting up the heat conduction piece towards one side of mirror 6 that shakes at connecting plate 211, to the heat piece can be a heat conduction pad, smooth gasket promptly, be favorable to more with the laminating of mirror 6 and connecting plate 211 that shakes for the heat is from 6 surfaces of the mirror that shakes transmitting to connecting plate 211 through the heat conduction pad, and then give off in the air. This embodiment can effectively reduce the temperature in the galvanometer 6 and the accommodation groove 223.

Referring to fig. 1 and 5, in an embodiment, a mounting hole 2111 is formed in the connection plate 211, and the connection plate 211 is connected to the housing 1 by a screw fastener 7 to couple the connection plate 211, the thermal pad, and the galvanometer 6. Specifically, the heat-conducting piece can be a heat-conducting pad, and in order to ensure that the connecting plate 211, the heat-conducting pad and the mirror 6 are tightly attached, the effective heat-radiating area is increased, the threaded fastener 7 can be arranged at the edge of the opening of the accommodating groove 223 at the shell 1, the connecting plate 211 is locked at the opening of the accommodating groove 223 through the threaded fastener 7, and the size of the heat-conducting piece is designed, so that the connecting plate 211, the heat-conducting pad and the mirror 6 are tightly attached together.

Referring to fig. 1, in an embodiment, the housing 1 further includes an upper cover 8, the upper cover 8 is disposed in the mounting groove 3, the projection optical machine 100 further includes a mylar film 9, and the mylar film 9 is attached to a seam between the heat dissipation light blocking member 2 and the upper cover 8. Specifically, the bending section of the heat dissipation light blocking member 2 is arranged in the optical machine housing 1, and the heat dissipation section 21 is arranged outside the housing 1, so that a gap exists at the joint of the heat dissipation light blocking member 2 and the upper cover 8, dust may enter from the gap, and light in the projection optical machine 100 may also be exposed from the gap, so that the mylar sheet 9 is bonded at the joint to effectively avoid the above problems. Specifically, a black mylar sheet 9 may be used to enhance the light-shielding effect.

Specifically, the assembly and fixing process of the heat dissipation blocking member 2 is as follows: the designed heat dissipation blocking piece 2 penetrates through the upper cover 8 and is assembled into the mounting groove 3 of the projection optical engine 100, wherein the assembly limit is that the lower part of the heat dissipation fin 212 contacts with the lens 10 for limiting, and finally the threaded fastener 7 is screwed up for locking.

Above only be the utility model discloses an optional embodiment to do not consequently restrict the utility model discloses a patent range, all be in the utility model discloses a technical idea down, utilize the equivalent structure transform of doing of the contents of description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection scope.

Claims

1. The projection optical machine is characterized by comprising a shell and a heat dissipation light blocking piece, wherein a mounting groove is formed in the shell, a prism is arranged in the mounting groove, the prism comprises an incident light surface and an emergent light surface, an overflow end is formed at an included angle formed by the incident light surface and the emergent light surface, the heat dissipation light blocking piece comprises a heat dissipation section and a light blocking section which are connected with each other, the light blocking section surrounds the overflow end, and the heat dissipation section is mounted on the shell.

2. The projector according to claim 1, wherein the light blocking section comprises a first light blocking plate and a second light blocking plate which are bent, the first light blocking plate and the second light blocking plate are connected to form a receiving groove, and the light overflow end is disposed in the receiving groove.

3. The light engine of claim 1, wherein the light blocking section surface is coated with a black paint layer.

4. The light engine of claim 1, wherein the heat sink section comprises a connection board and heat sink fins, the connection board is connected to the light blocking section, the connection board is mounted to the housing, and the heat sink fins are disposed on a side of the connection board away from the housing.

5. The light engine of claim 4, wherein the number of the heat dissipation fins is multiple, and the multiple heat dissipation fins are arranged on the connecting plate at intervals.

6. The projection light engine of claim 4, wherein the number of the heat dissipation fins is multiple, two adjacent heat dissipation fins form a heat dissipation air channel, and the direction of the heat dissipation air channel is the same as the direction of the air path of the housing.

7. The optical engine of claim 4, wherein the housing further comprises a mounting location formed below the connecting plate, a galvanometer is disposed in the mounting location, and a heat conducting member is disposed on a side of the connecting plate facing the galvanometer.

8. The projection engine of claim 7, wherein the thermal conductive member is a thermal conductive pad, and the connecting plate has a mounting hole formed thereon, and the connecting plate is connected to the housing by a threaded fastener, so that the connecting plate, the thermal conductive pad and the galvanometer are bonded.

9. The projection engine according to any of claims 1 to 8, wherein the housing further comprises an upper cover, the upper cover is covered on the mounting groove, the projection engine further comprises a mylar sheet, and the mylar sheet is attached to a seam between the heat dissipation light blocking member and the upper cover.

10. The light projector as defined in any of claims 1-8, further comprising a lens and a lens, wherein the lens is mounted on the housing, the light exit surface is disposed facing the lens, the lens is disposed in the mounting groove, and the lens is disposed facing the light entrance surface.