CN212083880U

CN212083880U - Lens heat dissipation mechanism and projection equipment

Info

Publication number: CN212083880U
Application number: CN202020560685.6U
Authority: CN
Inventors: 刘鹏程; 谢记涛; 张相雄; 陈永壮; 郭祖强; 胡飞
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-04
Anticipated expiration: 2030-04-16
Also published as: WO2021208826A1

Abstract

The utility model discloses a camera lens heat dissipation mechanism, include: a housing and a first heat dissipation member; the first heat dissipation component is arranged in the shell and penetrates through the shell to be connected with a lens positioned outside the shell, and the first heat dissipation component receives heat conducted by the lens and can move relative to the shell along with the movement of the lens. On this basis, the utility model also discloses a contain projecting apparatus of camera lens heat dissipation mechanism. The utility model discloses the heat dissipation problem of crowd behind the camera lens when the camera lens focusing has been solved at least.

Description

Lens heat dissipation mechanism and projection equipment

Technical Field

The utility model relates to the field of optical technology, concretely relates to camera lens heat dissipation mechanism and projection equipment.

Background

In an instrument device employing a lens, such as a projector, the lens generally includes a front lens group and a rear lens group (i.e., a rear lens group). When the lens works, light rays pass through the lens and other structures inside the lens, and light energy is converted into heat energy, so that the heat energy is absorbed by the lens internal structure, the heat deformation of a rear lens group of the lens is caused, the focal length is influenced, and the heat defocusing is generated. In addition, the above-mentioned instrument and equipment often need to be focused many times when working. When focusing, the rear lens group is displaced along the optical axis, the housing generates a large movement resistance to the rear lens group during the displacement, and the driving force of the automatic focusing motor in the instrument is limited, so that focusing cannot be performed when the resistance is too large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera lens heat dissipation mechanism and projection equipment at least to heat dissipation problem when solving the camera lens focusing at least.

The utility model discloses a technical scheme of following aspects realizes:

first aspect of the present invention

The utility model discloses a first aspect provides a camera lens heat dissipation mechanism.

In some embodiments, the lens heat dissipation mechanism comprises:

a housing and a first heat dissipation member;

the first heat dissipation component is arranged in the shell and penetrates through the shell to be connected with a lens positioned outside the shell, and the first heat dissipation component receives heat conducted by the lens and can move relative to the shell along with the movement of the lens.

In some embodiments, the first heat dissipation member is provided with a connection hole matching with the rear lens group, and the first heat dissipation member is sleeved on the rear lens group through the connection hole.

In some embodiments, the first heat dissipation member includes a first heat dissipation assembly and a second heat dissipation assembly, and the first heat dissipation assembly and the second heat dissipation assembly are connected to form the connection hole.

In some embodiments, the first heat dissipation member is fixed to the rear lens group by screwing.

In some embodiments, the lens heat dissipation mechanism further includes a second heat dissipation member connected to the first heat dissipation member, and the second heat dissipation member extends to the outside of the housing through a heat dissipation hole provided in the housing.

In some embodiments, a sealing portion for sealing the heat dissipation hole is disposed on the first heat dissipation member corresponding to the heat dissipation hole, the second heat dissipation member is connected to the sealing portion, and the lens heat dissipation mechanism further includes a flexible sealing member, which is respectively abutted against the sealing portion and the housing to seal the heat dissipation hole.

In some embodiments, the sealing portion is received in the heat dissipation aperture, and the flexible sealing member is disposed to cover a gap between the sealing portion and the heat dissipation aperture.

In some embodiments, the sealing portion covers the heat dissipation hole, and the flexible sealing member is disposed between the overlapping portions of the sealing portion and the housing.

In some embodiments, the heat dissipation mechanism further includes a heat conduction member disposed between the rear lens group and the first heat dissipation member, and the heat conduction member abuts against the rear lens group and the first heat dissipation member, respectively.

Second aspect of the present invention

A second aspect of the present invention provides a projection apparatus, which includes a light source, an optical modulation component, and a lens component arranged in sequence;

the light source is used for providing projection light;

the light modulation component emits image light corresponding to the image to be projected after performing image modulation on the projection light;

the lens assembly comprises a projection lens and a lens heat dissipation mechanism, wherein the projection lens is used for receiving the image light and projecting an image on a projection plane based on the image light; the lens heat dissipation mechanism is connected with the projection lens and used for dissipating heat of the projection lens, wherein the lens heat dissipation mechanism is the lens heat dissipation mechanism.

The embodiment of the utility model provides a possess following beneficial effect at least:

the first heat dissipation component is arranged in the shell and used for dissipating heat of the lens, and the first heat dissipation mechanism is connected with the lens, namely the lens and the first heat dissipation component can move in the direction of an optical axis of the lens relative to the shell, and the lens and the first heat dissipation component are in a follow-up relation. In this follow-up relationship, the movement of the lens and the first heat dissipation member is not affected by the housing. Therefore, the resistance generated when the focal length of the lens is adjusted can be reduced, and meanwhile, the first heat dissipation component moves along with the lens without influencing the heat dissipation effect of the lens. .

Drawings

Fig. 1 is an exploded view of a first embodiment of a lens heat dissipation mechanism according to the present application;

fig. 2 is a schematic structural diagram of a first embodiment of a lens heat dissipation mechanism according to the present application;

fig. 3 is a schematic view of a first heat dissipation member in a second embodiment of a lens heat dissipation mechanism of the present application;

fig. 4 is an exploded view of a second embodiment of a lens heat dissipation mechanism according to the present application;

fig. 5 is a schematic structural diagram of a first embodiment of a flexible sealing member in the lens heat dissipation mechanism of the present application;

fig. 6 is a schematic structural diagram of a second embodiment of a flexible sealing member in the lens heat dissipation mechanism of the present application;

fig. 7 is a schematic structural diagram of a third embodiment of a flexible sealing member in the lens heat dissipation mechanism of the present application;

fig. 8 is a schematic diagram of a first embodiment of a projection apparatus of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a lens heat dissipation mechanism provided in this embodiment. As shown in fig. 1, the present application provides a lens heat dissipation mechanism 100, which includes: the lens driving device comprises a shell 5 and a first heat dissipation component 10, wherein the first heat dissipation component 10 is arranged inside the shell 5, penetrates through the shell 5 and is connected with a lens 1 positioned outside the shell 5, and receives heat conducted by the lens 1 and can move relative to the shell 5 along with the movement of the lens 1. When the lens 1 is operated, a projection light beam enters the lens 1 from the inside of the housing 5, and a projection display is performed outside the housing 5 through the lens 1.

In the present embodiment, the first heat dissipation member 10 for dissipating heat from the lens 1 is disposed inside the housing 5, and the first heat dissipation mechanism 10 is connected to the lens 1, that is, the lens 1 and the first heat dissipation member 10 are movable in the optical axis direction of the lens 1 relative to the housing 5, and the lens 1 and the first heat dissipation member 10 are in a following relationship. The foregoing follow-up relationship specifically means that when the lens 1 is focused, the lens 1 is moved in the optical axis direction thereof, and the first heat dissipation member 10 is moved in accordance with the movement of the lens 1, and it is emphasized that in this follow-up relationship, the movement of the lens 1 and the first heat dissipation member 10 is not affected by the housing 5. Therefore, the present embodiment can reduce the resistance generated when the focal length of the lens 1 is adjusted, and at the same time, the first heat dissipation member 10 moves together with the lens 1 without affecting the heat dissipation effect of the lens 1. As shown in fig. 1, the lens 1 is a rear lens group 3 of the lens 1 near the housing 5, and the rear lens group 3 is usually moved when the lens 1 is focused, so in this embodiment, the first heat dissipation member 10 is connected to the rear lens group 3 in the optical path direction of the lens 1, and further, the rear lens group 3 passes through the housing 5 and is connected to the first heat dissipation member 10. In this embodiment, a side of the housing 5 away from the lens 1 is an inside of the housing 5, and the first heat dissipation member 10 is disposed inside the housing 5. The first heat dissipation member 10 and the rear lens group 3 are separated by the housing 5, and the rear lens group 3 passes through the housing 5 to be connected with the first heat dissipation member 10. The connection here can be realized by means of fixed connection, detachable connection, bonding, integral molding, etc., and those skilled in the art can select the connection according to actual needs, and the application is not limited.

In this embodiment, the housing 5 is provided with a through hole 11 in a direction consistent with the optical path direction of the lens 1, the through hole 11 can accommodate the rear lens group 3, and the rear lens group 3 passes through the through hole 11 and is connected to the first heat dissipation member 10. The rear lens group 3 is connected with the first heat dissipation member 10 and can move in the through hole 11 along the optical path direction of the lens 1. Specifically, the position of the housing 5 relative to the lens 1 and the first heat dissipation member 10 is relatively fixed, when the focal length of the rear lens group 3 is adjusted, the housing 5 does not displace, and the first heat dissipation member 10 moves along with the movement of the rear lens group 3 in the optical axis direction; further, the rear lens group 3 is connected to the first heat dissipating member 10, and heat generated by the incident light on the rear lens group 3 is conducted to the first heat dissipating member 10 by contact therebetween.

In the present embodiment, the first heat dissipation member 10 for dissipating heat from the rear lens group 3 is disposed inside the housing 5, and the first heat dissipation mechanism 10 is connected to the rear lens group 3, that is, the rear lens group 3 and the first heat dissipation member 10 are movable relative to the housing 5 in the optical axis direction of the rear lens group 3, and the rear lens group 3 and the first heat dissipation member 10 are in a following relationship. The following relationship means that the first heat dissipation member 10 moves in accordance with the movement of the rear lens group 3 when the rear lens group 3 is moved in the optical axis direction thereof during the focus adjustment of the rear lens group 3, and it is emphasized that the movement of the rear lens group 3 and the first heat dissipation member 10 is not affected by the housing 5 in such a following relationship. Therefore, the present embodiment can reduce the resistance generated when the rear lens group 3 is adjusted in focal length, and at the same time, the first heat dissipation member 10 moves together with the rear lens group 3 without affecting the heat dissipation effect of the rear lens group 3.

In this embodiment, the first heat dissipation member 10 may be made of a high thermal conductivity material, and optionally, the thermal conductivity of the first heat dissipation member 10 is controlled to be more than 50W/m · K, so that the heat on the rear group 3 of the lens can be better conducted to the first heat dissipation member 10, and meanwhile, the first heat dissipation member 10 can also quickly diffuse the conducted heat to heat dissipation structures such as a heat dissipation air duct, so as to improve the heat dissipation efficiency.

Therefore, the present embodiment solves the problem of large resistance of the rear lens group 3 of the lens 1 when adjusting the focal length, and solves the problem of heat dissipation of the rear lens group 3, wherein importantly, the rear lens group 3 is not obstructed by the housing 5 when adjusting the focal length, thereby reducing the resistance generated when adjusting the focal length; meanwhile, heat generated by the lens rear group 3 due to incident light can also be transmitted to the following first heat dissipation member 10 and dissipated, so that damage to the lens 1 and the lens rear group 3 caused by heat is avoided.

Further, in some embodiments, the connection between the first heat dissipation member 10 and the rear lens group 3 may be implemented as follows: the first heat dissipation member 10 is provided with a connection hole 12 matched with the rear lens group 3, and the first heat dissipation member 10 is sleeved on the rear lens group 3 through the connection hole 12.

In the above connection manner, the first heat dissipation member 10 completely wraps the periphery of the rear lens group 3 through the connection hole 12, so that the connection between the first heat dissipation member 10 and the rear lens group 3 is more stable, the heat exchange area between the first heat dissipation member 10 and the rear lens group 3 can be increased, and the heat dissipation capability of the lens heat dissipation mechanism 100 is improved. In addition, the lens heat dissipation structure 100 is detachably connected, so that the design is simple, the disassembly is convenient, and the maintenance is convenient.

It can be readily realized that in one or more other embodiments, the connection hole 12 is not a complete closed hole structure, but a connection structure having one or more openings. For example, it may be an arc-shaped groove structure matching the shape of the rear lens group 3.

Further, in an embodiment, the first heat dissipation member 10 may include a first heat dissipation assembly 6 and a second heat dissipation assembly 7, the first heat dissipation assembly 6 is detachably connected to the second heat dissipation assembly 7, and the connection portions of the first heat dissipation assembly 6 and the second heat dissipation assembly 7 are connected to each other to form the connection hole 12. The first heat dissipation assembly 6 is detachably connected with the second heat dissipation assembly 7 through

screws

8 and 9; in other embodiments, the first heat dissipation assembly 6 and the second heat dissipation assembly 7 may be connected by a snap, an adhesive, or the like. In this embodiment, the first heat sink assembly 6 is a first connecting portion 6, two ends of the first connecting portion 6 are provided with protruding first connecting protrusions 61, and the first connecting protrusions 61 are provided with first screw holes 62. The second heat dissipation assembly 7 includes a second connection portion 71 and a support portion 72, wherein two ends of the second connection portion 71 are provided with a second connection protrusion 711, and the second connection protrusion 711 is provided with a second screw hole 712; the support portion 72 is connected to the second connection portion 71 and extends in a direction opposite to the second connection portion 71. The two ends of the first connecting portion 6 and the two ends of the second connecting portion 71 contact each other, the first connecting protrusion 61 and the second connecting protrusion 711 contact each other relatively, the first screw hole 62 on the first connecting protrusion 61 corresponds to the second screw hole 712 on the second connecting protrusion 711, and further, the first heat dissipation assembly 6 and the second heat dissipation assembly 7 are fixed in the first screw hole 62 and the second screw hole 712 respectively through the first screw 8 and the second screw 9 and are further fixedly connected. The first and

second coupling protrusions

61 and 711 shown in fig. 1 are respectively located outside the coupling hole 12, and in some embodiments, the first and

second coupling protrusions

61 and 711 may also be located inside the coupling hole 12.

The first connecting portion 6 and the second connecting portion 71 may be arc-shaped connecting portions, the first connecting portion 6 and the second connecting portion 71 form a connecting hole 12 when connected together, and an inner surface of the connecting hole 12 is a connecting surface 121. Further, the first connection portion 6 and the second connection portion 71 may be both semicircular connection portions, and thus a circular connection hole 12 may be formed, and more importantly, the shape of the connection hole 12 is completely matched with the shape of the lens rear group 3, so that the connection surface 121 of the connection hole 12 is closely attached to the lens rear group 3, and thus the heat dissipation efficiency and the connection stability are improved.

As shown in fig. 2, when the first heat dissipation member 10 is connected to the rear lens group 3, two semicircular slots of the first connection portion 6 and the second connection portion 71 are sleeved on the rear lens group 3, and then the two semicircular slots are locked by the first screw 8 and the second screw 9. It should be noted that the number of the first screws 8 and the second screws 9 is not limited to 1, and may be plural.

Further, as shown in fig. 1, a third screw hole 122 and/or a fixing hole 123 may be further disposed on the first connecting portion 6 and the second connecting portion 71, and a fastening screw (not shown) passes through the third screw hole 122 and/or the fixing hole 123 to abut against the rear lens group 3 sleeved in the connecting hole 12, thereby further improving the connection stability between the rear lens group 3 and the first heat dissipating member 10.

Further, in one or more other embodiments, the first heat dissipation assembly 6 and the second heat dissipation assembly 7 may also be integrally formed, and both are integrally formed as the first heat dissipation member 10. As shown in fig. 3 and 4, the first heat dissipating member 10 is an integrally formed structure, a connecting hole 12 is formed on the first heat dissipating member 10, and the shape and size of the connecting hole 12 are matched with the size of the rear lens group 3, so as to allow the rear lens group 3 to be sleeved in the connecting hole 12. The connecting hole 12 has a connecting surface 121 with a certain width, and is further configured to contact the lens rear group 3 when the lens rear group 3 is sleeved in the connecting hole 12, a third screw hole 122 is disposed on the connecting surface 121 of the connecting hole 12, and when the lens rear group 3 is sleeved in the connecting hole 12, the third screw 16 abuts against the lens rear group 3 through the third screw hole 122 to fix the lens rear group 3. In this embodiment, the number of the third screw holes 122 on the connection surface 121 of the connection hole 12 is at least 1, and correspondingly, the number of the third screws 16 corresponds to the number of the third screw holes 122, in this embodiment, 3 third screw holes 122 distributed along the circumferential direction of the connection hole 12 are arranged around the connection hole 12, and correspondingly, the 3 third screws 16 abut against the rear lens group 3 at different positions in the circumferential direction of the connection hole 12 through the third screw holes 122, so as to fix the rear lens group 3; wherein, the positions of the 3 third screw holes 122 in the circumferential direction of the connecting hole 12 can form an equilateral triangle, so as to achieve a better fixing effect. Further, the outer side surface of the rear lens group 3 may also be provided with a fixing hole 123 corresponding to the third screw hole 122, and when the rear lens group 3 can be sleeved in the connecting hole 12, the third screw 16 may pass through the third screw hole 122 and be fixed into the fixing hole 123 on the outer side surface of the rear lens group 3, thereby further improving the stability of the two.

Compared with the scheme of decomposing the first heat dissipation member 10 into two parts, in the design scheme of the present embodiment, while the working performance of the first heat dissipation member 10 is ensured, the number of parts for assembly is reduced, so that the structural design of the first heat dissipation member 10 is simpler, and the disassembly and assembly are convenient. In these embodiments, the connection between the connection hole 12 and the rear lens group 3 may be further determined by referring to the connection schemes of the first screw 8, the second screw 9, the first screw hole 62, and the second screw hole 712, and/or the connection schemes of the third screw 16 and the third screw hole 122, which may be set by those skilled in the art according to actual needs.

Further referring to fig. 1, in some embodiments, a flexible heat conducting member 2 may be further disposed between the contact portions of the rear lens group 3 and the first heat dissipating member 10, and when the rear lens group 3 and the first heat dissipating member 10 are connected, the flexible heat conducting member 2 may be abutted against the rear lens group 3 and the first heat dissipating member 10, respectively. The flexible heat conducting member 2 can seal a gap between the rear lens group 3 and the first heat dissipation member 10 when the rear lens group 3 and the first heat dissipation member 10 are connected, so that the tightness between the first heat dissipation member 10 and the rear lens group 3 is improved, meanwhile, heat on the rear lens group 3 can be more effectively transmitted to the first heat dissipation member 10, and further, the heat dissipation effect is improved. In an embodiment, the flexible heat conducting member 2 may be a heat conducting pad.

Referring to fig. 1, in some embodiments, the lens heat dissipation mechanism 100 of the present application may further include a second heat dissipation member 13 connected to the first heat dissipation member 10, the second heat dissipation member 13 is located on a side of the first heat dissipation member 10 away from the connection hole 12, further, a heat dissipation hole 14 is disposed on the housing 5, and the second heat dissipation member 13 passes through the heat dissipation hole 14 on the housing 5 and extends to the outside of the housing 5; further, the heat conducted from the rear lens group 3 to the first heat dissipation member 10 is further conducted to the outside of the housing 5, and the heat is taken away and released by the heat dissipation air duct outside the housing 5, thereby further improving the heat dissipation efficiency of the lens heat dissipation mechanism 100.

The second heat dissipation member 13 may be made of a material with high thermal conductivity, and optionally, the thermal conductivity of the second heat dissipation member 13 is controlled to be more than 50W/m · K. In one embodiment, the second heat dissipation member 13 may be a heat dissipation device such as a heat dissipation fin, a heat conduction column, or the like. In other embodiments, the second heat dissipation member 13 may be an air-cooled heat sink, a heat pipe heat sink, a water-cooled heat sink, or the like.

Since the lens heat dissipation mechanism 100 needs to move along with the rear lens group 3 in the optical path direction of the lens 1, the second heat dissipation member 13 needs to be able to move in the heat dissipation hole 14, so that a gap is formed between the second heat dissipation member 13 and the heat dissipation hole 14, the sealing performance of the housing 5 is damaged, and the contamination inside the housing 5 may be caused, thereby affecting the working performance of the lens device and the like.

Based on the above reasons, in some embodiments, regarding the lens heat dissipation mechanism 100, the following improvements can be made:

the first heat dissipation member 10 is provided with a sealing portion 15 corresponding to the heat dissipation hole 14 for sealing the heat dissipation hole 14, the second heat dissipation member 13 is connected to the sealing portion 15, and the lens heat dissipation mechanism 100 further includes a flexible sealing member 4. The flexible sealing member 4 abuts against the sealing portion 15 and the housing 5, respectively, to close a communication space formed between the heat radiation hole 14 and the inside of the housing 5. In the present embodiment, the sealing performance of the housing 5 is achieved by the abutment of the flexible seal member 4 with the seal portion 15 and the housing 5.

Since the second heat dissipation member 13 needs to be movable in the heat dissipation hole 14; therefore, to facilitate the overall structural design of the lens heat dissipation mechanism 100, in some embodiments, the through direction of the heat dissipation hole 14 coincides with the optical path direction. By "coincident" herein is meant that the direction of penetration is substantially parallel to the direction of the optical path, and more preferably, both are parallel.

In some modified embodiments, the penetrating direction of the heat dissipation hole 14 may not coincide with the optical path direction.

The sealing portion 15 is generally designed to have a size approximately equal to the size of the heat dissipation hole 14 in order to close the heat dissipation hole 14, and can be designed by those skilled in the art according to actual needs.

As shown in fig. 5, in some embodiments, the size of the sealing portion 15 is slightly smaller than that of the heat dissipation hole 14, so that the sealing portion 15 can extend into the heat dissipation hole 14, a certain distance 1514 is provided between the edge of the sealing portion 15 and the inner wall of the heat dissipation hole 14, the flexible sealing member 4 is disposed between the edge of the sealing portion 15 and the distance 1514 formed between the inner wall of the heat dissipation hole 14, the flexible sealing member 4 is disposed on the same side surface of the sealing portion 15 and the heat dissipation hole 14, and covers the distance 1514 formed between the edge of the sealing portion 15 and the inner wall of the heat dissipation hole 14. More specifically, as shown in FIG. 5, the flexible sealing member 4 may be provided with a groove-shaped structure 42 in cross-section. Wherein the opening 421 of the groove-shaped structure 42 faces the spacing 1514 and communicates with the spacing 1514; the two ends of the opening of the groove-shaped structure 42 extend outwards to form two connecting ends 41, wherein one connecting end 41 is connected with the shell 5, and the other connecting end 41 is connected with the sealing part 15. In this embodiment, due to the design of the groove-shaped structure 42, the elastic expansion space of the flexible sealing member 4 can be increased, and specifically, when the first heat dissipation member 10 moves, the resistance to the movement of the first heat dissipation member 10 is reduced due to the larger elastic expansion space in the groove-shaped structure 42, which is more beneficial to the movement of the first heat dissipation member 10, and provides an adjustment space for adjusting the focal length of the rear lens group 3.

In another embodiment, the flexible sealing member 4 may also be directly connected to the housing 5 and the sealing portion 15 as shown in fig. 6.

As shown in fig. 7, in other modified embodiments, the size of the sealing portion 15 may be slightly larger than that of the heat dissipation hole 14, the sealing portion 15 cannot extend into the heat dissipation hole 14, at this time, the sealing portion 15 can completely cover the heat dissipation hole 14, and the flexible sealing member 4 is disposed between the overlapping portion of the sealing portion 15 and the housing 5.

Further, the flexible sealing member 4 may be a gasket.

Based on the lens heat dissipation mechanism 100 in the above embodiments, the present application also provides a projection apparatus, which includes a light source, a light modulation assembly, and a lens assembly, which are arranged in sequence. Wherein, the light source is used for providing projection light; the light modulation component emits image light corresponding to the image to be projected after carrying out image modulation on the projection light; the lens assembly comprises a projection lens and a lens heat dissipation mechanism, wherein the projection lens is used for receiving image light and projecting an image on a projection plane based on the image light; the lens heat dissipation mechanism is connected with the projection lens and used for dissipating heat of the projection lens. The lens heat dissipation mechanism may be the lens heat dissipation mechanism according to any one of the embodiments shown in fig. 1 to 7, and will not be described herein again.

Referring to fig. 8, the present application further provides a projection apparatus 1000, as shown in fig. 8, the projection apparatus 1000 includes a light source, a light modulation assembly, and a lens assembly, which are sequentially disposed. The light source comprises a light emitting element 201, a first light shaping assembly 202, a wavelength conversion device 203, a second light shaping assembly 204, a light homogenizing element 205, a third light shaping assembly 206 and a reflecting element 207; the light modulation assembly comprises a TIR prism 209 and a spatial light modulator 208; the lens assembly includes a projection lens 210 and a lens heat dissipation mechanism (not shown).

The light emitting element 201 may be implemented by a device capable of emitting light, such as an LED lamp; the first light shaping component 202 may be implemented by a shaping lens; the second light shaping component 204 and the third light shaping component 206 are similar to the first light shaping component 202 in function, and can be designed with reference to the first light shaping component 202; the wavelength conversion device 203 the optical converter may be implemented by a wavelength converter; the dodging element 205 may be implemented by an optical integrator rod; the reflective element 207 may specifically be an optical element having at least one reflective surface, such as a flat mirror; the spatial light modulator 208 may be implemented by a liquid crystal light valve. It is emphasized that the foregoing optical devices can be implemented by those skilled in the art using the prior art, and the details of the ways in which these optical devices can be implemented are not described here. In the present embodiment, the main technical contribution is the innovation of the projection lens 210 and the connection relationship between the projection lens 210 and the aforementioned optical devices, and more importantly, the projection apparatus 1000 formed by combining the projection lens 210 and the aforementioned optical devices has at least the technical effects of good heat dissipation performance, long service life, excellent imaging, and the like; of course, these technical effects mainly result from the improvement of the lens heat dissipation mechanism in the projection lens 210.

The workflow and specific principles for the projection device 1000 are as follows:

after the illumination light emitted from the light emitting element 201 is subjected to beam shaping by the first light shaping unit 202, the illumination light enters the wavelength conversion device 203, and the wavelength conversion device 203 is provided with wavelength conversion elements such as fluorescent materials and quantum dot materials; then, the wavelength conversion device 203 is excited to generate projection light based on the incident light, the projection light further passes through the second light shaping unit 204, the dodging unit 205, the third light shaping unit 206, the reflection unit 207, and the TIR prism 209 in sequence, and is finally guided to the spatial light modulator 208, then the spatial light modulator 208 performs image modulation on the incident projection light based on the image to be projected to form image light, and the image light further passes through the TIR prism 209 and the projection lens 210 and then performs image display on the projection surface.

Specifically, the projection lens 210 in this embodiment includes the lens heat dissipation mechanism 100 in any one of the embodiments shown in fig. 1 to 7, and the light emitting element 201, the first light shaping assembly 202, the wavelength conversion device 203, the second light shaping assembly 204, the dodging element 205, the third light shaping assembly 206, the reflecting element 207, the spatial light modulator 208, and the TIR prism 209 are all disposed inside a housing of the lens heat dissipation mechanism 100. Based on the improvement of the lens heat dissipation mechanism 100, the working performance of the projection lens 210 is improved, and the light source 201, the first light shaping component 202, the wavelength conversion device 203, the second light shaping component 204, the dodging element 205, the third light shaping component 206, the reflecting element 207, the spatial light modulator 208, the TIR prism 209 and other optical devices are all arranged inside the housing of the lens heat dissipation mechanism 100. Therefore, when the heat dissipation performance of the lens heat dissipation mechanism 100 is improved, the heat accumulated in the projection apparatus 1000 can be dissipated quickly to a great extent, and the optical devices are prevented from being damaged by heat accumulation, so that the service life of each optical device is prolonged, and the working performance of the projection apparatus 1000 is improved as a whole.

The present invention has been described in detail with reference to the above embodiments, but these are not to be construed as limiting the present invention. The protection scope of the present invention is not limited to the above embodiments, but equivalent modifications or changes made by those skilled in the art according to the disclosure of the present invention should be included in the protection scope of the claims.

Claims

1. A lens heat dissipation mechanism, comprising: a housing and a first heat dissipation member;

the first heat dissipation component is arranged in the shell and penetrates through the shell to be connected with the lens positioned outside the shell, and the first heat dissipation component receives heat conducted by the lens and can move relative to the shell along with the movement of the lens.

2. The lens heat dissipation mechanism according to claim 1, wherein the first heat dissipation member has a connection hole matching with the lens, and the first heat dissipation member is sleeved on the rear group of lenses through the connection hole.

3. The lens heat dissipation mechanism according to claim 2, wherein the first heat dissipation member includes a first heat dissipation component and a second heat dissipation component, and the first heat dissipation component and the second heat dissipation component are connected to form the connection hole.

4. The lens heat dissipation mechanism according to claim 1, wherein the first heat dissipation member is fixedly connected to the rear lens group by screwing.

5. The lens heat dissipation mechanism according to claim 1, further comprising a second heat dissipation member connected to the first heat dissipation member, the second heat dissipation member extending to the outside of the housing through a heat dissipation hole provided in the housing.

6. The lens heat dissipation mechanism according to claim 5, wherein a sealing portion for sealing the heat dissipation hole is provided at a position corresponding to the heat dissipation hole on the first heat dissipation member, and the second heat dissipation member is connected to the sealing portion, and the lens heat dissipation mechanism further includes a flexible sealing member which abuts against the sealing portion and the housing, respectively, to seal the heat dissipation hole.

7. The lens heat dissipation mechanism according to claim 6, wherein the sealing portion is received in the heat dissipation hole, and the flexible sealing member is disposed to cover a gap between the sealing portion and the heat dissipation hole.

8. The lens heat dissipation mechanism according to claim 6, wherein the sealing portion covers the heat dissipation hole, and the flexible sealing member is provided between the sealing portion and an overlapping portion of the housing.

9. The lens heat dissipation mechanism according to any one of claims 1 to 8, further comprising a heat conduction member provided between the rear lens group and the first heat dissipation member, the heat conduction member being abutted against the rear lens group and the first heat dissipation member, respectively.

10. A projection device is characterized by comprising a light source, a light modulation component and a lens component which are arranged in sequence;

the light source is used for providing projection light;

the lens assembly comprises a projection lens and a lens heat dissipation mechanism, wherein the projection lens is used for receiving the image light and projecting an image on a projection plane based on the image light; the lens heat dissipation mechanism is connected with the projection lens and used for dissipating heat of the projection lens, wherein the lens heat dissipation mechanism is the lens heat dissipation mechanism of any one of claims 1 to 9.