CN220911225U - Light projector - Google Patents

Abstract

The utility model relates to the technical field of lighting equipment, in particular to a light projector. The projector includes: the shell is provided with a front cover plate, the front cover plate is provided with an opening, the opening is communicated with the inside of the shell, and one side of the front cover plate, which is back to the inside of the shell, is provided with a mounting part; a power supply part and a lighting part are arranged in the shell, the power supply part is connected with the lighting part, and a light-emitting part of the lighting part extends outwards from the opening; and a plurality of lenses, any of which can be detachably connected with the mounting portion, so that the lens is covered at the light emitting portion of the illumination member; and each lens corresponds to a lighting effect. So through changing different lenses for the projecting lamp can realize different illumination effect, and then makes the projecting lamp can be suitable for different scenes, consequently the application scope of projecting lamp enlarges.

Description

Light projector

Technical Field

The utility model relates to the technical field of lighting equipment, in particular to a projection lamp.

Background

Light projectors are important lighting devices in life. For example, the projector can be used in the environment of tunnels, squares, roads, factory buildings and the like for illumination. The part responsible for illumination in the traditional projection lamp is not replaceable, so that the traditional projection lamp is not adjustable in illumination effect aspects such as illumination range, illumination brightness, illumination color and the like, and the application range of each projection lamp is single. For example, the illumination of tunnel projecting lamp is comparatively soft, and tunnel projecting lamp is unsuitable for needs the environment of extensive highlight such as square. For another example, the light color of the road projector has a certain penetration of the fog, but the light color of the road projector may be detrimental to the field personnel to identify the risk sign in the plant.

Disclosure of utility model

The utility model aims to solve the technical problems that: the application scope of projecting lamp is single.

In order to solve the technical problem, the present utility model provides a projector, which includes: the shell is provided with a front cover plate, the front cover plate is provided with an opening, the opening is communicated with the inside of the shell, and one side of the front cover plate, which is back to the inside of the shell, is provided with a mounting part; a power supply part and a lighting part are arranged in the shell, the power supply part is connected with the lighting part, and a light-emitting part of the lighting part extends outwards from the opening; and a plurality of lenses, any of which can be detachably connected with the mounting portion, so that the lens is covered at the light emitting portion of the illumination member; and each lens corresponds to a lighting effect.

In some embodiments, the lens is connected to the mounting portion of the front cover plate by a plurality of connectors.

In some embodiments, the connector is a screw.

In some embodiments, the housing includes a mounting housing provided with a first opening, the front cover plate is mounted at the first opening of the mounting housing, and the mounting housing is integrally formed.

In some embodiments, the mounting housing includes an outer frame and a back cover plate, the front side of the outer frame is provided with a front cover plate, the back side of the outer frame is provided with a back cover plate, and the power supply component is mounted on a side of the back cover plate facing the front cover plate.

In some embodiments, the front cover plate is removably connected to the mounting housing.

In some embodiments, the projector further includes a bracket provided in a U shape, and both ends of the bracket are rotatably connected to both sides of the housing in a length direction, respectively.

In some embodiments, two sides of the shell in the length direction are respectively provided with a support, and two ends of the support are respectively rotatably connected with the two supports.

In some embodiments, the end of the bracket is connected to the support by a first bolt-and-nut assembly and a second bolt-and-nut assembly; the support is provided with an arc-shaped long hole and a first screw hole positioned at the center of the long hole, the first bolt and nut assembly is arranged at the first screw hole, the second bolt and nut assembly is arranged in the long hole in a penetrating way, and the second bolt and nut assembly can move along the long hole; wherein the bracket is rotatable relative to the support based on unscrewing of the first bolt-and-nut assembly and the second bolt-and-nut assembly; the position of the bracket is fixed based on the tightening of the first bolt-and-nut assembly and the second bolt-and-nut assembly.

In some embodiments, the housing is provided with a plurality of spaced apart heat dissipating apertures.

The technical scheme provided by the utility model has the following beneficial effects:

According to the illumination requirement of the use environment, the corresponding lens is installed on the installation part of the front cover plate, so that the light emitted by the light-emitting part can realize the illumination requirement. So through changing different lenses for the projecting lamp can realize different illumination effect, and then makes the projecting lamp can be suitable for different scenes, consequently the application scope of projecting lamp enlarges.

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 perspective view of a projector according to an embodiment of the utility model;

FIG. 2 is a schematic front view of a housing in accordance with one embodiment of the utility model;

FIG. 3 is a perspective view of a projector according to an embodiment of the utility model;

FIG. 4 is a schematic front view of a stand according to an embodiment of the present utility model

FIG. 5 is a schematic side view of a support base coupled to a bracket in accordance with an embodiment of the utility model;

fig. 6 is a schematic vertical cross-section of a projector according to an embodiment of the utility model.

Reference numerals illustrate:

1. a housing; 11. a front cover plate; 111. opening holes; 12. a mounting shell; 121. an outer frame; 122. a back cover plate; 13. a heat radiation hole; 2. a lighting member; 3. a power supply part; 4. a lens; 5. a bracket; 6. a support; 61. a long hole; 62. a first screw hole; 63. a first bolt and nut assembly; 64. a second bolt and nut assembly; 65. a support plate; 66. and (3) mounting a plate.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the utility model and are not intended to limit the scope of the utility model, which may be embodied in many different forms and not limited to the specific embodiments of the utility model herein, but include all technical solutions falling within the scope of the claims.

These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present utility model, unless otherwise indicated, the meaning of "plurality of" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present utility model and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in the present application are not used for any order, quantity, or importance, but rather are used for distinguishing between different parts. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used herein have the same meaning as understood by one of ordinary skill in the art to which the present utility model pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

As shown in fig. 1, 2, 3 and 6, the present utility model provides a projector comprising a housing 1 and a plurality of lenses 4. The housing 1 has a front cover plate 11, the front cover plate 11 is provided with an opening 111, the opening 111 communicates with the interior of the housing 1, and a mounting portion is provided on a side of the front cover plate 11 facing away from the interior of the housing 1. A power supply unit 3 and a lighting unit 2 are installed in the housing 1, the power supply unit 3 is connected to the lighting unit 2, and a light emitting portion of the lighting unit 2 protrudes from the opening 111. Any one of the lenses 4 can be detachably connected to the mounting portion so that the lens 4 is housed at the light emitting portion of the illumination member 2. And each lens 4 corresponds to a lighting effect.

Specifically, the housing 1 has a cavity in which both the power supply part 3 and the lighting part 2 are mounted. The front cover 11 is located at the front side of the housing 1 so that the light emitting portion of the illumination member 2 protrudes forward through the opening 111 to radiate light of the light emitting portion forward. The opening 111 may be a rectangular hole, a circular hole, an oval hole, or the like, and the present utility model is not limited thereto. The lighting unit 2 may be installed at an inward side of the front cover 11 or may be connected to a sidewall of the housing 1, and the present utility model is not limited. The power supply part 3 may be connected to either side wall of the housing 1, and the present utility model is not limited as such. The illumination component 2 can be an LED module, and the light emitting part can be an LED lamp bead; alternatively, the illumination member 2 may be a COB module, and the light emitting portion may be COB beads, which is not limited by the present utility model. The power supply unit 3 is capable of supplying power to the illumination unit 2, and the power supply unit 3 may be a rechargeable battery or a dry battery, etc., and the present utility model is not limited thereto. The lens 4 is a shell made of light-transmitting materials, and the lens 4 is detachably connected with the mounting part of the front cover plate 11, so that the lens 4 can be replaced by the projection lamp conveniently. The lens 4 mounted on the front cover plate 11 can be covered at the light emitting part, and the lens 4 can make the light emitted from the light emitting part exhibit a certain illumination effect. The lenses 4 may include lenses suitable for tunnels, lenses suitable for factories, lenses suitable for roads, and the like according to the use requirement, and the present utility model is not limited. The lens suitable for the tunnel can make the light of the light-emitting part softer, so that dazzling and dizziness are avoided; the lens suitable for the road can enable the light of the light-emitting part to present a certain color, thereby enhancing the penetrating power of the large fog; the lens suitable for the factory building can enable the light of the light-emitting part to have a larger irradiation range, and further reduce dark areas.

In the present embodiment, the corresponding lens 4 is mounted to the mounting portion of the front cover 11 according to the illumination requirement of the use environment, so that the light emitted from the light emitting portion can achieve the illumination requirement. For example, when the projector is installed in a tunnel, a lens suitable for the tunnel is installed at the installation portion of the front cover plate 11 so that the light of the light emitting portion is gentle. For example, when the projector is mounted on a road, a lens suitable for the road is mounted at the mounting portion of the front cover plate 11 to enhance the penetration of the large fog. For example, the lens suitable for the factory building can enable the light of the light-emitting part to have a larger irradiation range, so that dark areas are reduced. So through changing different lens 4 for the projecting lamp can realize different illumination effect, and then makes the projecting lamp can be suitable for different scenes, and the application scope of projecting lamp enlarges.

It should be noted that the lens 4 is a device commonly known in the art, and the structure and principle thereof can be known to those skilled in the art. The utility model is illustrated for the purpose of clarity of understanding of the solution of the utility model by those skilled in the art with respect to lens 4. In some embodiments, the lens 4 may be a light-transmitting housing having a second opening, and the interior of the lens 4 has a receiving cavity capable of receiving the light emitting portion of the lighting component 2. When the lens 4 is mounted to the mounting portion of the front cover 11, the second opening of the lens 4 faces the opening 111 of the front cover 11, and the light emitting portion protrudes into the accommodation chamber of the lens 4 through the opening 111. In addition, as will be appreciated by those skilled in the art, materials of different optical parameters (optical parameters include refractive index, transmittance, color, etc.) can provide different light transmission effects to the lens 4, and thus different illumination effects. In the present utility model, different lenses 4 are made of known materials with different optical parameters, but the implementation process of the illumination effect of the present utility model is not described in detail.

In some embodiments of the present utility model, the lens 4 is connected to the mounting portion of the front cover 11 by a plurality of connectors to facilitate the disassembly of the lens 4.

In some embodiments, the back surface of the lens 4 may be provided with a plurality of elastic rubber balls, the mounting portion of the front cover plate 11 is provided with a plurality of mounting grooves, the rubber balls are in one-to-one correspondence with the mounting grooves, and the diameter of the rubber balls is slightly larger than that of the mounting grooves, so that the rubber balls can be clamped into the mounting grooves. When the lens 4 is required to be removed, the rubber ball is pulled out of the mounting groove. When the lens 4 is required to be mounted, the lens 4 is pressed, and the rubber ball is pressed into the mounting groove.

In some embodiments, the back surface of the lens 4 is provided with a plurality of first magnetic elements, the mounting portion of the front cover plate 11 is provided with a plurality of second magnetic elements, the first magnetic elements and the second magnetic elements are in one-to-one correspondence, and the first magnetic elements and the second magnetic elements are attracted to each other. When the lens 4 needs to be removed, the first magnetic piece and the second magnetic piece are separated from contact. When the lens 4 is to be mounted, the first magnetic member and the second magnetic member are brought into contact with each other.

In some embodiments of the utility model, the connector is a screw.

Specifically, the lens 4 is provided with a plurality of first screw holes 62, the front cover plate 11 is also provided with a plurality of second screw holes, and the first screw holes 62 and the second screw holes are in one-to-one correspondence. Screws are screwed into the first screw holes 62 and the second screw holes to connect the lens 4 and the front cover 11. The lens 4 and the front cover plate 11 are connected through screws, so that the lens 4 can be conveniently disassembled, assembled and replaced.

In some embodiments, the lens 4 is connected to the mounting portion of the front cover plate 11 by a plurality of rounded slot pins. Specifically, a plurality of mounting holes are formed in the lens 4, a plurality of mounting grooves are formed in the mounting portion of the front cover plate 11, the mounting holes correspond to the mounting grooves one by one, and the round-head groove pins can be inserted into the mounting holes and the mounting grooves. When the lens 4 is required to be removed, the round-headed grooved pin is pulled out of the mounting hole and the mounting groove. When the lens 4 is required to be mounted, the round-head groove pin is pressed, and the round-head groove pin is pressed into the mounting hole and the mounting groove.

In some embodiments of the present utility model, the housing 1 includes a mounting housing 12, the mounting housing 12 is provided with a first opening, the front cover plate 11 is mounted at the first opening of the mounting housing 12, and the mounting housing 12 is integrally formed.

Specifically, the mounting case 12 has a cavity in which the power supply part 3 and the lighting part 2 are mounted. The front side of the mounting housing 12 has a first opening where the front cover 11 is mounted. The front cover 11 may be detachably connected with the mounting case 12 to facilitate the attachment and detachment of the front cover 11, the power supply part 3, the illumination part 2, and the like. The contour of the front cover 11 is identical to the contour of the first opening of the mounting housing 12, so that the front cover 11 can close off the first opening of the mounting housing 12. The illumination member 2 may be provided on the side of the front cover plate 11 facing the cavity of the mounting housing 12, i.e. such that the illumination member 2 may be provided on the inward side of the front cover plate 11 such that the light emitting portion of the illumination member 2 is close to the first opening of the front cover plate 11. The illumination component 2 and the front cover plate 11 can be connected through a plurality of screws so as to facilitate the disassembly and assembly of the illumination component 2. In addition, the integrally formed type of mounting case 12 contributes to simplifying the structure of the entire housing 1 and to shortening the assembly time of the housing 1.

As shown in fig. 1 and 3, in some embodiments of the present utility model, the mounting case 12 includes an outer frame 121 and a rear cover 122, the front side of the outer frame 121 is provided with the front cover 11, the rear side of the outer frame 121 is provided with the rear cover 122, and the rear cover 122 is disposed opposite to the front cover 11, and the power supply part 3 is mounted on a side of the rear cover 122 facing the front cover 11.

Specifically, as will be understood by those skilled in the art, the front side refers to the side from which light is emitted, and the rear side refers to the side opposite to the front side; similarly, the front refers to the direction of light propagation; the rear refers to the direction opposite to the direction of light propagation. The outer frame 121 is provided in a cylindrical shape, for example, a square cylindrical shape. The front side of the outer frame 121 has a first opening, and the front cover 11 is mounted on the front side of the outer frame 121. The back cover 122 is installed at the rear side of the outer frame 121, and the outer frame 121 and the back cover 122 are integrally connected, simplifying the connection therebetween. The rear cover 122, the outer frame 121 and the front cover 11 define a cavity therebetween of the housing 1. The power supply part 3 is mounted on the side of the back cover 122 facing the front cover 11, i.e., the power supply part 3 is mounted on the inward side of the back cover 122 to prevent the power supply part 3 from moving.

In some embodiments, the inward side of the back cover 122 is recessed away from the cavity to form a limit slot in which the power supply component 3 is mounted.

In some embodiments of the present utility model, the front cover 11 is detachably connected to the mounting housing 12 to facilitate the disassembly of the front cover 11.

In some embodiments, a plurality of fourth nuts are disposed on an inward side of the front cover 11, and a plurality of through holes are disposed on a sidewall of the mounting housing 12, the through holes being in one-to-one correspondence with the fourth nuts. The fourth bolt can be connected with the fourth nut through the through hole to connect the front cover plate 11 with the mounting case 12.

As shown in fig. 1 and 3, in some embodiments of the present utility model, the projector further includes a bracket 5, the bracket 5 is provided in a U shape, and both ends of the bracket 5 are rotatably connected to both sides of the housing 1 in the length direction, respectively. Alternatively, both ends of the bracket 5 are rotatably connected to the left and right sides of the housing 1, respectively.

Specifically, the bracket 5 is a connection part of a projector, and the projector can be mounted on a wall or a pole or the like through the bracket 5. For example, the bracket 5 may be mounted at a wall or a pole, etc. by screws, and the bracket 5 may be mounted at a wall or a pole, etc. by binding ropes, the present utility model is not limited thereto. The bracket 5 and the housing 1 can rotate so that the housing 1 can be adjusted in angle. For example, when the bracket 5 is mounted on a wall, the housing 1 or the bracket 5 is rotated and the housing 1 is brought to a proper illumination angle, and then the angle between the bracket 5 and the housing 1 is fixed.

In some embodiments, the bracket 5 and the housing 1 may be connected by a third bolt. The third bolt is unscrewed to enable the bracket 5 to rotate, the bracket 5 or the housing 1 is adjusted to be at a proper angle, and then the third bolt is screwed to fix the position of the bracket 5.

As shown in fig. 1 and 3, in some embodiments of the present utility model, the two sides of the housing 1 in the length direction are provided with the holders 6, respectively, and both ends of the bracket 5 are rotatably connected with the two holders 6, respectively.

Specifically, the housing 1 is connected to the bracket 5 through the mount 6 (specifically, the mounting case 12 is connected to the bracket 5 through the mount 6), avoiding the housing 1 from being directly connected to the bracket 5, preventing the connection parts (e.g., third bolts) of the housing 1 and the bracket 5 from coming into contact with the internal wiring, and also preventing the connection parts (e.g., third bolts) of the housing 1 and the bracket 5 from interfering with the mounting of the power supply part 3 and the lighting part 2. The support 6 may be a block structure or the like as long as it is advantageous to achieve the object of the present utility model, and the present utility model is not limited to the specific structural form of the support 6.

As shown in fig. 1, 3, 4 and 5, in some embodiments of the present utility model, the end of the bracket 5 is connected to the support 6 by a first bolt-and-nut assembly 63 and a second bolt-and-nut assembly 64. The support 6 is provided with an arc-shaped long hole 61 and a first screw hole 62 positioned at the center of the long hole 61, the first bolt and nut assembly 63 is arranged at the first screw hole 62, the second bolt and nut assembly 64 is arranged in the long hole 61 in a penetrating manner, and the second bolt and nut assembly 64 can move along the long hole 61. Wherein the bracket 5 is rotatable relative to the support 6 based on unscrewing of the first and second bolt-and-nut assemblies 63, 64; the position of the bracket 5 is fixed based on the screwing of the first and second bolt-nut assemblies 63 and 64.

Specifically, the stand 6 includes a mounting plate 66 and two support plates 65, and the two support plates 65 are mounted at a spacing on the side of the mounting housing 12. The mounting plate 66 is connected to the mounting housing 12 by a support plate 65 with a space between the mounting plate 66 and the mounting housing 12. The mounting plate 66 is provided with a first screw hole 62 and an arc-shaped long hole 61, and the first screw hole 62 is positioned at the center of the long hole 61. The end of the bracket 5 is provided with a second screw hole and a third screw hole, the second screw hole corresponds to the first screw hole 62, and the third screw hole corresponds to the long hole 61. The first bolt-nut assembly 63 includes a first bolt and a first nut, a head of the first bolt being located between the mounting plate 66 and the mounting housing 12, a shank of the first bolt being pierced in the first screw hole 62 and the second screw hole, and an end of the mounting plate 66 and the bracket 5 being located between the head of the first bolt and the first nut. The second bolt-nut assembly 64 includes a second bolt and a second nut, the head of the second bolt being located between the mounting plate 66 and the mounting housing 12, the shank of the second bolt being pierced in the third screw hole and the long hole 61, the ends of the mounting plate 66 and the bracket 5 being located between the head of the second bolt and the second nut.

In the present embodiment, when it is necessary to rotate the bracket 5, the first and second bolt-and-nut assemblies 63 and 64 are unscrewed, and then the bracket 5 is rotated; the second bolt-nut assembly 64 is movable along the long hole 61 to enable the bracket 5 to be moved to a proper position; the first and second bolt-and-nut assemblies 63 and 64 are then screwed so that the position of the bracket 5 is fixed.

As shown in fig. 1 and 3, in some embodiments of the present utility model, a plurality of heat dissipation holes 13 are provided on the housing 1 at intervals.

Specifically, the heat generated by the battery part and the lighting part 2 can be dissipated from the heat dissipation holes 13, so as to prevent the normal operation of the battery part and the lighting part 2 from being influenced by more heat accumulated in the cavity.

Thus, various embodiments of the present utility model have been described in detail. In order to avoid obscuring the concepts of the utility model, some details known in the art have not been described. How to implement the inventive solutions herein will be fully apparent to those skilled in the art from the above description.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. A light projector, comprising:

The shell (1), the shell (1) is provided with a front cover plate (11), the front cover plate (11) is provided with an opening (111), the opening (111) is communicated with the inside of the shell (1), and one side of the front cover plate (11) facing away from the inside of the shell (1) is provided with a mounting part; a power supply component (3) and a lighting component (2) are arranged in the shell (1), the power supply component (3) is connected with the lighting component (2), and a light-emitting part of the lighting component (2) extends outwards from the opening (111); and

A plurality of lenses (4), any one of the lenses (4) being detachably connectable to the mounting portion such that the lens (4) is housed at a light emitting portion of the illumination member (2); and each lens (4) corresponds to a lighting effect.

2. The projector according to claim 1, characterized in that the lens (4) is connected to the mounting portion of the front cover plate (11) by means of a plurality of connectors.

3. The projector of claim 2, wherein the connector is a screw.

4. The projector according to claim 1, wherein the housing (1) includes a mounting housing (12), the mounting housing (12) is provided with a first opening, the front cover plate (11) is mounted at the first opening of the mounting housing (12), and the mounting housing (12) is integrally formed.

5. The projector according to claim 4, wherein the mounting housing (12) includes an outer frame (121) and a rear cover plate (122), the front side of the outer frame (121) is provided with the front cover plate (11), the rear side of the outer frame (121) is provided with the rear cover plate (122), and the power supply unit (3) is mounted on a side of the rear cover plate (122) facing the front cover plate (11).

6. The light projector according to claim 4, characterized in that the front cover plate (11) is detachably connected with the mounting housing (12).

7. The projector according to claim 1, characterized in that the projector further comprises a bracket (5), the bracket (5) is provided in a U-shape, and both ends of the bracket (5) are rotatably connected to both sides in the length direction of the housing (1), respectively.

8. The projector according to claim 7, wherein the two sides of the housing (1) in the length direction are respectively provided with a support (6), and both ends of the bracket (5) are respectively rotatably connected with the two supports (6).

9. The light projector according to claim 8, characterized in that the end of the bracket (5) is connected to the support (6) by a first bolt-and-nut assembly (63) and a second bolt-and-nut assembly (64);

The support (6) is provided with an arc-shaped long hole (61) and a first screw hole (62) positioned at the center of the long hole (61), the first bolt and nut assembly (63) is arranged at the first screw hole (62), the second bolt and nut assembly (64) is penetrated in the long hole (61), and the second bolt and nut assembly (64) can move along the long hole (61);

Wherein the bracket (5) is rotatable relative to the support (6) based on unscrewing of the first bolt-and-nut assembly (63) and the second bolt-and-nut assembly (64); based on the tightening of the first bolt-and-nut assembly (63) and the second bolt-and-nut assembly (64), the position of the bracket (5) is fixed.

10. The projector according to any one of claims 1 to 9, wherein the housing (1) is provided with a plurality of heat dissipation holes (13) distributed at intervals.