Projection host

Abstract

The invention relates to a projection host, which comprises a host body and a plurality of supporting legs, and the plurality of supporting legs are used for supporting the host body on a supporting body. Wherein the bottom of the host body is provided with a sliding rail groove and a cover body corresponding to the sliding rail groove, the sliding rail groove penetrates through the inner wall surface and the outer wall surface of the bottom wall of the host body, the top of the sliding rail groove is provided with a sliding rail surface which is gradually and obliquely arranged in the height direction of the host body, and the cover body covers a notch in the top of the sliding rail groove; the plurality of supporting legs at least comprise a first supporting leg, the first supporting leg is arranged in the sliding rail groove and can slide along the sliding rail surface under the action of external force, and the lower part of the first supporting leg extends out of the sliding rail groove to be supported on the supporting body; when the projection host is supported on the support body, the top surface of the first support leg abuts against the inner side surface of the cover body, and a limiting matching structure is formed between the top surface and the inner side surface so as to limit the first support leg to slide along the slide rail surface. By means of the arrangement, height adjustment is convenient, meanwhile, the first supporting feet can be self-locked after adjustment is finished, and displacement of the first supporting feet is prevented.

Description

Technical Field

[0001] The present disclosure relates to the technical field of projection devices, and particularly to a projection host. Background Art

[0002] A projection device is a display device for generating a projection screen. The projection device generally includes a projection host and a projection screen. Among them, the light-emitting port of the projection host faces the projection screen to emit a light beam to the projection screen, and the projection screen is used to receive the light beam to realize the display of the screen.

[0003] The projection host includes a host body and casters. The casters are used to support the host body on a support. The support can be a TV cabinet or a support frame, etc. In the prior art, the casters are usually matched with nuts arranged on the host body through studs. By rotating the casters, the studs are driven to rotate to adjust the height of the host body, so as to adapt the projection screen to the projection screen. However, for the height adjustment structure formed by the cooperation of the studs and the nuts, the user needs to rotate the operation to realize the height adjustment, which is inconvenient to adjust. Moreover, after the adjustment is completed and the host body is supported on the support by the casters, when the host body is touched or the support vibrates, the casters are likely to move, resulting in a change in the height of the casters, and further making the projection screen not adapted to the projection screen, and the casters need to be readjusted, which affects the user experience. Summary of the Invention

[0004] To solve the above technical problems, the present disclosure provides a projection host.

[0005] The present disclosure provides a projection host, including a host body and a plurality of supporting feet. The host body is used to emit a projection light beam; the plurality of supporting feet are arranged at the bottom of the host body and are used to support the host body on a support; wherein, a slide rail groove and a cover corresponding to the slide rail groove are arranged at the bottom of the host body. The slide rail groove penetrates through the inner and outer wall surfaces of the bottom wall of the host body. The top of the slide rail groove has a slide rail surface that is gradually inclined along the height direction of the host body. The cover is installed on the top slot opening of the slide rail groove; the plurality of supporting feet at least include a first supporting foot. The first supporting foot is arranged in the slide rail groove and can slide along the slide rail surface under the action of an external force. The lower part of the first supporting foot extends out of the slide rail groove to support on the support; when the projection host is supported on the support, the top surface of the first supporting foot and the inner surface of the cover are in abutting contact, and a limiting fit structure is formed between the two to limit the first supporting foot from sliding along the slide rail surface.

[0006] Optionally, an activity gap is formed between the inner surface of the cover and the slide rail surface; a protruding and extending support rib is arranged on the side surface of the first supporting foot. The support rib supports on the slide rail surface and can slide along the slide rail surface in the activity gap under the action of an external force.

[0007] Optionally, at least one of the lower surface of the support rib and the slide rail surface is formed as a friction surface, so that after the first leg slides into position along the slide rail surface under the action of external force, the first leg can remain in the slid into position.

[0008] Optionally, the first support leg includes a support leg body and a friction pad disposed on the top of the support leg body; when the projection host is supported on the support body, the friction pad and the inner surface of the cover body are in contact with each other, and a limited matching structure relying on frictional force is formed between the two to limit the first support leg from sliding along the slide rail surface.

[0009] Optionally, the first support leg includes a support leg body and a magnetic attraction piece arranged on the top of the support leg body, and the inner surface of the cover body is provided with a magnetic attraction matching piece corresponding to the magnetic attraction piece; when the projection host is supported on the support body, the magnetic attraction piece and the magnetic attraction matching piece are magnetically matched, and the magnetic attraction piece and the magnetic attraction matching piece form a limit matching structure relying on magnetic attraction matching to limit the first support leg from sliding along the slide rail surface.

[0010] Optionally, the top surface of the first support leg is formed as a first inclined surface arranged parallel to the slide rail surface; the inner surface of the cover body facing the slide rail surface is formed as a second inclined surface arranged parallel to the slide rail surface; when the projection host is supported on the support body, the first inclined surface and the second inclined surface fit each other.

[0011] Optionally, a support pad is provided at the bottom of the first leg, and the support pad is used to contact the support body.

[0012] Optionally, the number of the first legs is two, and the two first legs are spaced apart along the width direction of the host body; the number of the slide rail grooves is two, and the two slide rail grooves are arranged opposite to each other along the width direction of the host body, and the two first legs are arranged in the two slide rail grooves in a one-to-one correspondence.

[0013] Optionally, the slide rail surfaces formed on the two slide rail grooves gradually increase in height along the direction toward each other, or gradually increase in height along the direction away from each other.

[0014] Optionally, the plurality of legs further include a second leg, the number of the second legs is two, the two second legs are spaced apart along the width direction of the host body, and the two second legs are fixed to the bottom of the host body; wherein the two second legs are located at the front end of the bottom of the host body, and the two first legs are located at the rear end of the bottom of the host body.

[0015] Compared with the prior art, the technical solution provided by the embodiment of the present disclosure has the following advantages:

[0016] The projection host provided by the embodiment of the present disclosure has a slide rail groove provided at the bottom of the host body. The slide rail groove penetrates the inner and outer wall surfaces of the bottom wall of the host body. The top of the slide rail groove has a slide rail surface that is gradually inclined in the height direction of the host body. The cover body is installed at the top notch of the slide rail groove. The first support foot among the multiple support feet provided at the bottom of the host body is arranged in the slide rail groove. When it is necessary to adjust the support height of the host body on the support, the first support foot can be made to slide along the slide rail surface, which is convenient for adjustment. Moreover, after the adjustment of the first support foot is completed and the projection host is supported on the support, the top surface of the first support foot and the inner surface of the cover body are in abutting contact, and a limiting fit structure is formed between the two to limit the sliding of the first support foot along the slide rail surface, that is, the first support foot is self-locked at this time, ensuring the support stability of the projection host on the support, reducing the risk of the first support foot shifting due to the vibration of the support or the host body being touched, ensuring the suitability of the projection beam emitted by the host body, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the exploded view of the projection host according to the embodiment of the present disclosure;

[0020] Figure 2 is the exploded view of the lower housing, the first support foot and the cover body according to the embodiment of the present disclosure;

[0021] Figure 3 is the cross-sectional view of the lower housing, the first support foot and the cover body in a specific embodiment according to the embodiment of the present disclosure;

[0022] Figure 4 is the cross-sectional view of the lower housing, the first support foot and the cover body in a specific embodiment according to the embodiment of the present disclosure, showing the positions of the first support foot before and after adjustment;

[0023] Figure 5 is Figure 3 the enlarged view of I in

[0024] Figure 6 is the exploded view of the first support foot in a specific embodiment according to the embodiment of the present disclosure;

[0025] Figure 7 A cross-sectional view of the lower housing, the first support leg, and the cover body according to an embodiment of the present disclosure from another perspective;

[0026] Figure 8 is Figure 7 an enlarged view of part II in

[0027] Figure 9 A cross-sectional view of the lower housing, the first support leg, and the cover body in another specific embodiment according to an embodiment of the present disclosure;

[0028] Figure 10 is Figure 9 an enlarged view of part III in

[0029] Figure 11 A bottom view of the projection host according to an embodiment of the present disclosure;

[0030] Figure 12 A cross-sectional view of the lower housing, the first support leg, and the second support leg in a specific embodiment according to an embodiment of the present disclosure;

[0031] Figure 13 is Figure 12 an enlarged view of part IV in

[0032] Wherein, 1, the host body; 11, the slide rail groove; 111, the slide rail surface; 12, the cover body; 121, the second inclined surface; 122, the cover plate; 123, the flanging part; 13, the movable gap; 14, the magnetic attraction fitting; 15, the upper housing; 16, the lower housing; 161, the third installation groove; 2, the first support leg; 21, the support rib; 22, the support leg body; 23, the friction pad; 24, the magnetic attraction part; 25, the first inclined surface; 26, the support pad; 261, the clamping protrusion; 27, the first installation groove; 3, the second support leg. Specific Embodiments

[0033] In order to more clearly understand the above objects, features, and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0034] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0035] An embodiment of the present disclosure provides a projection host, as Figure 1 shown, the projection host includes a host body 1 and a plurality of support legs, the host body 1 is used for emitting a projection light beam; the plurality of support legs are arranged at the bottom of the host body 1 and are used for supporting the host body 1 on a support.

[0036] Among them, as Figures 2 - 4 shown, a slide rail groove 11 and a cover body 12 corresponding to the slide rail groove 11 are provided at the bottom of the host body 1. The slide rail groove 11 penetrates through the inner and outer wall surfaces of the bottom wall of the host body 1. The top of the slide rail groove 11 has a slide rail surface 111 that is gradually inclined in the height direction of the host body 1. The cover body 12 is installed on the top slot opening of the slide rail groove 11; the plurality of feet at least includes a first foot 2. The first foot 2 is arranged in the slide rail groove 11 and can slide along the slide rail surface 111 under the action of an external force. The lower part of the first foot 2 extends out of the slide rail groove 11 to support on the support body; when the projection host is supported on the support body, the top surface of the first foot 2 and the inner surface of the cover body 12 are in abutting contact, and a limiting fit structure is formed between the two to limit the first foot 2 from sliding along the slide rail surface 111.

[0037] When this projection host is in use, the host body 1 is supported on the support body by a plurality of feet. In order to adjust the position of the projection light beam emitted by the host body 1, an external force can be applied to the first foot 2 among the plurality of feet, so that the first foot 2 slides along the slide rail surface 111 in the slide rail groove 11 to adjust the length of the first foot 2 extending out of the slide rail groove 11, and further adjust the support height of the host body 1 on the support body (refer to Figure 4 the different positions of the first foot 2 on the left before and after adjustment in the figure); after the adjustment of the first foot 2 is completed, the host body 1 is supported on the support body by a plurality of feet. At this time, the top surface of the first foot 2 and the inner surface of the cover body 12 are in abutting contact, and a limiting fit structure is formed between the two to limit the first foot 2 from sliding along the slide rail surface 111, that is, the first foot 2 is self-locked to ensure the support stability of the projection host on the support body.

[0038] Among them, the support body can be a TV cabinet or a support frame or other structures.

[0039] The projection host provided by the embodiments of the present disclosure has a slide rail groove 11 provided at the bottom of the host body 1. The slide rail groove 11 penetrates the inner and outer wall surfaces of the bottom wall of the host body 1. The top of the slide rail groove 11 has a slide rail surface 111 that is gradually inclined in the height direction of the host body 1. The cover body 12 is mounted on the top slot of the slide rail groove 11. The first support foot 2 among the multiple support feet provided at the bottom of the host body 1 is arranged in the slide rail groove 11. When it is necessary to adjust the support height of the host body 1 on the support body, the first support foot 2 can be slid along the slide rail surface 111, which is convenient for adjustment. Moreover, after the adjustment of the first support foot 2 is completed, when the projection host is supported on the support body, the top surface of the first support foot 2 and the inner surface of the cover body 12 are in abutting contact, and a limiting fit structure is formed between the two to limit the sliding of the first support foot 2 along the slide rail surface 111, that is, the first support foot 2 is self-locked at this time, ensuring the support stability of the projection host on the support body, reducing the risk of the first support foot 2 shifting due to the vibration of the support body or the host body 1 being touched, ensuring the suitability of the projection beam emitted by the host body 1, and improving the user experience.

[0040] In addition, the first support foot 2 and the cover body 12 can both be plastic parts, which can reduce costs compared with the height adjustment structure composed of metal studs and nuts in the prior art.

[0041] Exemplarily, this kind of projection host can be used with a projection screen. The light beam emitted by the host body 1 is projected onto the projection screen to form a projection image on the projection screen for the user to watch. The projection screen can specifically be a wall or a screen such as a curtain. By sliding the first support foot 2 along the slide rail surface 111, the support height of the host body 1 on the support body is adjusted, so that the projection image is adapted to the projection screen. Moreover, after the adjustment of the first support foot 2 is completed, when the projection host is supported on the support body, the first support foot 2 can be self-locked, ensuring the support stability of the host body 1 on the support body, and ensuring that the projection image and the projection screen are continuously in an adapted state, providing a good viewing experience for the user.

[0042] Specifically, as Figures 5 - 6 shown, there is an activity gap 13 formed between the inner surface of the cover body 12 and the slide rail surface 111. A support rib 21 that protrudes and extends is provided on the side surface of the first support foot 2. The support rib 21 supports on the slide rail surface 111 and can slide along the slide rail surface 111 in the activity gap 13 under the action of an external force.

[0043] When adjusting the first support foot 2, an external force is applied to the first support foot 2 to make the support rib 21 slide along the slide rail surface 111 in the activity gap 13 between the inner surface of the cover body 12 and the slide rail surface 111, and the first support foot 2 slides in the slide rail groove 11 to adjust the length of the first support foot 2 extending out of the slide rail groove 11.

[0044] By providing a support rib 21 on the side surface of the first foot 2, when adjusting the first foot 2, the support rib 21 slides along the slide rail surface 111, improving the sliding stability of the first foot 2 along the slide rail groove 11. Moreover, the first foot 2 is supported on the slide rail surface 111 by the support rib 21, preventing the first foot 2 from disengaging from the slide rail groove 11 when picking up the projection host from the support body.

[0045] In addition, in a specific embodiment, the distance between the inner side surface of the cover body 12 and the slide rail surface 111 is greater than the distance between the lower surface of the support rib 21 and the top surface of the first foot 2. When adjusting the first foot 2, the top surface of the first foot 2 separates from the inner side surface of the cover body 12, enabling the support rib 21 to slide more smoothly along the slide rail surface 111 and facilitating the adjustment operation of the first foot 2. When the projection host is supported on the support body, the support rib 21 separates from the slide rail surface 111, and the top surface of the first foot 2 abuts against the inner side surface of the cover body 12, forming a limited position cooperation structure therebetween to complete the self-locking of the first foot 2.

[0046] It should be noted that to support the first foot 2 on the slide rail surface 111, it is not limited to providing a protruding and extending support rib 21 on the side surface of the first foot 2. For example, forming a support step on the side surface of the first foot 2 and relying on the support step to support on the slide rail surface 111 is also feasible.

[0047] Furthermore, at least one of the lower surface of the support rib 21 and the slide rail surface 111 is formed as a friction surface, so that after the first foot 2 slides along the slide rail surface 111 in place under an external force, the first foot 2 can remain in the slid-in position.

[0048] When adjusting the first foot 2, an external force is applied to the first foot 2 to make the support rib 21 slide along the slide rail surface 111, and the first foot 2 slides in the slide rail groove 11; when the first foot 2 slides in place, since the support rib 21 is supported on the slide rail surface 111 and at least one of the lower surface of the support rib 21 and the slide rail surface 111 is formed as a friction surface, at this time, relying on the friction between the lower surface of the support rib 21 and the slide rail surface 111, the first foot 2 is kept in the slid-in position, ensuring that the first foot 2 will not shift after the adjustment is completed, and further enabling the first foot 2 to be supported on the support body when remaining in the slid-in position, ensuring the accuracy of the adjustment of the first foot 2.

[0049] Exemplarily, the lower surface of the support rib 21 can be processed into a rough surface to form a friction surface, and the slide rail surface 111 can also be processed into a rough surface to form a friction surface.

[0050] Specifically, the host body 1 includes a housing and an optical component. The housing has a receiving cavity, and the optical component is located in the receiving cavity. A light passing port communicating with the receiving cavity is provided on the housing, and the optical component can emit a projection beam through the light passing port.

[0051] As Figures 1 - 2 shown, the housing includes an upper housing 15 and a lower housing 16. A slide rail groove 11 is formed in the lower housing 16, and a cover body 12 is fixed to the lower housing 16. Specifically, the slide rail groove 11 can be formed at the bottom of the lower housing 16 and is provided through the inner and outer wall surfaces of the bottom wall of the lower housing 16. The cover body 12 is fixed at a position corresponding to the slide rail groove 11 on the inner bottom of the lower housing 16. The cover body 12 can have a cover plate 122, and flanging portions 123 that are bent and extended are respectively provided around the cover plate 122. The plurality of flanging portions 123 and the cover plate 122 enclose a receiving space, and the flanging portions 123 are connected to the lower housing 16 so that the top of the slide rail groove 11 is located in the receiving space.

[0052] Exemplarily, one of the flanging portion 123 and the lower housing 16 is provided with a positioning post, and the other of the flanging portion 123 and the lower housing 16 is provided with a positioning hole that is in positioning cooperation with the positioning post, so as to facilitate the positioning and installation of the cover body 12. The flanging portion 123 and the lower housing 16 can be connected by screws, for example, to ensure the connection stability between the cover body 12 and the lower housing 16.

[0053] In a specific embodiment, as Figures 6 - 8 shown, the first foot 2 includes a foot body 22 and a friction pad 23 provided on the top of the foot body 22; when the projection host is supported on a support body, the friction pad 23 and the inner surface of the cover body 12 are in abutting contact, and a limiting fit structure that cooperates by friction is formed between the two to limit the first foot 2 from sliding along the slide rail surface 111.

[0054] In this embodiment, when the projection host is supported on a support body, the first foot 2 is self-locked by the friction force between the friction pad 23 and the inner surface of the cover body 12.

[0055] Exemplarily, a first installation groove 27 is formed at the top of the foot body 22, and the friction pad 23 is installed in the first installation groove 27, and the bottom surface of the friction pad 23 is bonded to the bottom of the first installation groove 27 by an adhesive.

[0056] The friction pad 23 can be a rubber pad or a silica gel pad, for example.

[0057] In another specific embodiment, as Figures 9 - 10As shown, the first foot 2 includes a foot body 22 and a magnetic attraction member 24 provided at the top of the foot body 22, and a magnetic attraction mating member 14 corresponding to the magnetic attraction member 24 is provided on the inner surface of the cover body 12; when the projection host is supported on the support body, the magnetic attraction member 24 and the magnetic attraction mating member 14 are magnetically attracted to each other, and the magnetic attraction member 24 and the magnetic attraction mating member 14 form a limit mating structure relying on magnetic attraction to limit the first foot 2 from sliding along the slide rail surface 111.

[0058] When adjusting the first foot 2, under the action of an external force, the magnetic attraction between the magnetic attraction member 24 and the magnetic attraction mating member 14 is released, so that the first foot 2 slides along the slide rail surface 111; after the first foot 2 slides in place, the first foot 2 is released, and the first foot 2 is in limit mating with the inner surface of the cover body 12 under the magnetic force of the magnetic attraction member 24 and the magnetic attraction mating member 14.

[0059] In this embodiment, when the projection host is supported on the support body, the first foot 2 is self-locked by the magnetic attraction force between the magnetic attraction member 24 and the magnetic attraction mating member 14.

[0060] Exemplarily, the magnetic attraction member 24 can be a magnet, and the magnetic attraction mating member 14 can be an iron sheet. The magnet can be bonded to the top of the foot body 22; the iron sheet is bonded to the inner surface of the cover body 12.

[0061] In a specific embodiment, please refer to Figure 5 and Figure 6 As shown, the top surface of the first foot 2 is formed as a first inclined surface 25 parallel to the slide rail surface 111; the inner surface of the cover body 12 facing the slide rail surface 111 is formed as a second inclined surface 121 parallel to the slide rail surface 111; when the projection host is supported on the support body, the first inclined surface 25 and the second inclined surface 121 are mutually attached.

[0062] With such a setting, when the projection host is supported on the support body, the top surface of the first foot 2 can better mutually attach to the inner surface of the cover body 12 facing the slide rail surface 111, that is, the first inclined surface 25 and the second inclined surface 121 can better mutually attach to each other, so as to ensure that there is a large contact area between the first inclined surface 25 and the second inclined surface 121, and further ensure the reliability of the limit mating relying on the limit mating structure formed between the first inclined surface 25 and the second inclined surface 121. Exemplarily, when the first inclined surface 25 and the second inclined surface 121 are limited by friction, by ensuring that there is a large contact area between the first inclined surface 25 and the second inclined surface 121, a large frictional force can be ensured between the first inclined surface 25 and the second inclined surface 121, thereby ensuring the limit effect, preventing the first foot 2 from sliding along the slide rail surface 111, and realizing the self-locking of the first foot 2.

[0063] In a specific embodiment, a support pad 26 is provided at the bottom of the first foot 2, and the support pad 26 is used to contact the support body.

[0064] When the main body 1 of the host is supported on the support body by a plurality of feet, and the first foot 2 is supported on the support body through the support pad 26, the support stability of the first foot 2 can be improved, and the support body can be prevented from being damaged by the first foot 2.

[0065] Exemplarily, a second installation groove is formed at the bottom of the first foot 2. As Figure 6 shown, a plurality of clamping protrusions 261 are provided on the top of the support pad 26, and the support pad 26 is snapped into the second installation groove through the plurality of clamping protrusions 261.

[0066] In a specific embodiment, as Figure 11 shown, the number of the first feet 2 is two, and the two first feet 2 are arranged at intervals along the width direction of the main body 1 of the host; the number of the slide rail grooves 11 is two, and the two slide rail grooves 11 are arranged opposite to each other along the width direction of the main body 1 of the host, and the two first feet 2 are correspondingly arranged in the two slide rail grooves 11 one by one.

[0067] In this embodiment, when adjusting the support height of the main body 1 of the host on the support body, the two first feet 2 can slide in their respective corresponding slide rail grooves 11 respectively to achieve balanced height adjustment, which is beneficial to improving the efficiency of reaching the adjusted position.

[0068] Exemplarily, the two first feet 2 are symmetrically arranged along the width direction of the main body 1 of the host, and the two slide rail grooves 11 are symmetrically arranged along the width direction of the main body 1 of the host.

[0069] Specifically, the slide rail surfaces 111 formed on the two slide rail grooves 11 are inclined such that the height gradually increases in the direction towards each other, or the height gradually increases in the direction away from each other.

[0070] In some specific embodiments, as Figure 9 shown, the slide rail surfaces 111 formed on the two slide rail grooves 11 are inclined such that the height gradually increases in the direction towards each other. When the two first feet 2 slide in the direction towards each other, the lengths of the two first feet 2 extending out of their respective corresponding slide rail grooves 11 gradually decrease. Since the projection host is usually supported on a plane, generally the adjustment distance of the two first feet 2 is not too large. Therefore, the two first feet 2 can maintain a large span, ensuring that the projection host is more stably supported on the support body.

[0071] In some other specific embodiments, the slide rail surfaces 111 formed on the two slide rail grooves 11 are inclined such that the height gradually increases in the direction away from each other (not shown in the figure). Such a setting makes the lengths of the two first feet 2 extending out of their respective corresponding slide rail grooves 11 gradually increase when the two first feet 2 slide in the direction towards each other.

[0072] In addition, as Figure 11 shown, the plurality of feet further includes a second foot 3, and the number of the second feet 3 is two. The two second feet 3 are arranged at intervals in the width direction of the main body 1 of the host, and both of the two second feet 3 are fixed to the bottom of the main body 1 of the host; wherein, the two second feet 3 are located at the front end part of the bottom of the main body 1 of the host, and the two first feet 2 are located at the rear end part of the bottom of the main body 1 of the host.

[0073] In this embodiment, the main body 1 of the host is supported on the support body by two spaced-apart first feet 2 and two spaced-apart second feet 3, ensuring the stable support of the main body 1 of the host; and in order to ensure the aesthetics of the projection host, the two second feet 3 are located at the front end part of the bottom of the main body 1 of the host, and the two first feet 2 are located at the rear end part of the bottom of the main body 1 of the host, that is, relative to the projection screen generated by the main body 1 of the host, the two second feet 3 are located on the side close to the projection screen, and the two first feet 2 are located on the side far from the projection screen, so that the two first feet 2 are far from the user, and the user cannot directly see the two first feet 2.

[0074] In addition, in some embodiments, the projection host further includes two limiting blocks (not shown in the figure). When the projection host is supported on the support body, the two limiting blocks respectively engage with the two second feet 3, and both of the two limiting blocks are fixed to the support body. The positions of the two second feet 3 are marked by the two limiting blocks. After the projection host is displaced for operations such as cleaning the projection host, the two second feet 3 can be positioned by the two limiting blocks, so as to realize the reset of the projection host after displacement, improving the accuracy and convenience of the reset of the projection host.

[0075] Specifically, as Figures 12 - 13 shown, a third installation groove 161 is formed in the bottom of the lower housing 16, and the second foot 3 is installed in the third installation groove 161. In order to avoid damaging the support body, the second foot 3 is provided as a support foot pad, and the support foot pad is bonded in the third installation groove 161. The material of the support foot pad can be silicone, rubber or the like.

[0076] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0077] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A projection host, characterized in that: include: A host body, used for emitting a projection light beam; A plurality of legs, arranged at the bottom of the host body, for supporting the host body on a support body; The bottom of the host body is provided with a slide rail groove and a cover body corresponding to the slide rail groove, the slide rail groove is provided through the inner and outer wall surfaces of the bottom wall of the host body, the top of the slide rail groove has a slide rail surface gradually inclined along the height direction of the host body, and the cover body is installed at the top notch of the slide rail groove; The plurality of legs at least include a first leg, the first leg is disposed in the slide rail groove and can slide along the slide rail surface under the action of an external force, and the lower portion of the first leg extends out of the slide rail groove to be supported on the support body; When the projection host is supported on the support body, the top surface of the first support leg and the inner surface of the cover body are in abutment contact, and a limited position matching structure is formed therebetween to limit the first support leg from sliding along the slide rail surface.

2. The projection host according to claim 1, characterized in that: A movable gap is formed between the inner surface of the cover body and the slide rail surface; A protruding and extending support rib is arranged on the side surface of the first support leg. The support rib is supported on the slide rail surface and can slide along the slide rail surface in the movable gap under the action of external force.

3. The projection host according to claim 2, characterized in that: At least one of the lower surface of the support rib and the slide rail surface is formed as a friction surface, so that after the first support leg slides into position along the slide rail surface under the action of external force, the first support leg can remain in the slid into position.

4. The projection host according to claim 1, characterized in that: The first support leg comprises a support leg body and a friction pad disposed on the top of the support leg body; When the projection host is supported on the support body, the friction pad and the inner surface of the cover body are in abutment contact, and a limit matching structure relying on frictional force is formed therebetween to limit the first support leg from sliding along the slide rail surface.

5. The projection host according to claim 1, characterized in that: The first support leg comprises a support leg body and a magnetic attraction piece arranged on the top of the support leg body, and the inner surface of the cover body is provided with a magnetic attraction matching piece corresponding to the magnetic attraction piece; When the projection host is supported on the support body, the magnetic attraction component and the magnetic attraction matching component are magnetically matched, and the magnetic attraction component and the magnetic attraction matching component form a limiting matching structure relying on magnetic attraction matching to limit the first support leg from sliding along the slide rail surface.

6. The projection host according to claim 1, characterized in that: The top surface of the first leg is formed as a first inclined surface arranged parallel to the slide rail surface; The inner surface of the cover body facing the slide rail surface is formed into a second inclined surface arranged parallel to the slide rail surface; When the projection host is supported on the support body, the first inclined surface and the second inclined surface are in contact with each other.

7. The projection host according to claim 1, characterized in that: A support pad is provided at the bottom of the first support leg, and the support pad is used to contact the support body.

8. The projection host according to any one of claims 1 to 7, characterized in that: The number of the first legs is two, and the two first legs are arranged at intervals along the width direction of the host body; The number of the slide rail grooves is two, and the two slide rail grooves are arranged opposite to each other along the width direction of the host body, and the two first legs are arranged in the two slide rail grooves in a one-to-one correspondence.

9. The projection host according to claim 8, characterized in that: The slide rail surfaces formed on the two slide rail grooves gradually increase in inclination height in a direction toward each other, or gradually increase in inclination height in a direction away from each other.

10. The projection host according to claim 8, characterized in that: The plurality of legs further include a second leg, the number of the second leg is two, the two second legs are arranged at intervals along the width direction of the host body, and the two second legs are fixed to the bottom of the host body; The two second legs are located at the front end of the bottom of the host body, and the two first legs are located at the rear end of the bottom of the host body.

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