Shell assembly of projection equipment and projection equipment

Abstract

The utility model relates to a shell assembly of projection equipment and the projection equipment. The shell assembly of the projection equipment comprises an antenna and a shell. The shell comprises an insulating part and a metal part which are connected. The antenna comprises a first radiator and a second radiator which are connected. The first radiator is located in the insulating part, and the second radiator is located in the metal part. At the moment, the second radiating body can be integrated into the metal part, so that the second radiating body does not occupy the space of the insulating part, the space of the insulating part can be multiplied under the condition that the antenna wiring is not influenced, the smaller the space of the insulating part is, the larger the space of the metal part is, and the better the texture of the whole shell assembly is. Moreover, the routing width of the antenna is not affected, so that the texture of the shell assembly can be improved while the performance of the antenna is not affected.

Description

Technical Field

[0001] The present application belongs to the technical field of communication equipment, and specifically relates to a housing assembly of a projection device and the projection device. Background Art

[0002] At present, projection equipment has wireless connection function, and the realization of wireless connection function means that projection equipment is often designed with antennas with transceiver functions. In order to ensure the overall texture of the projection equipment, metal shell is often used, but large-area metal wrapping has a great impact on the antenna in the projection equipment. Therefore, when designing the antenna, it is necessary to avoid the metal area, so as to reserve a part of the structure for non-metallic materials, such as plastic, etc. This often affects the appearance of the whole machine. Utility Model Content

[0003] The present application provides a shell assembly of a projection device and the projection device, so as to solve the technical problem that the appearance and texture of the shell assembly are poor.

[0004] To solve the above technical problems, a technical solution adopted in the present application is: a shell assembly of a projection device, the shell assembly comprising: an outer shell, including an insulating part and a metal part connected; an antenna, including a first radiator and a second radiator connected, the first radiator is located in the insulating part, and the second radiator is located in the metal part.

[0005] According to an embodiment of the present application, the first radiator and the second radiator are both extended along a first direction.

[0006] According to an embodiment of the present application, the second radiator and the metal part are directly connected or coupled.

[0007] According to an embodiment of the present application, the first radiator is parallel to the insulating portion, the second radiator is arranged in parallel to the metal portion, and the first direction is an arrangement direction of the insulating portion and the metal portion.

[0008] According to an embodiment of the present application, the first radiator is located in a connection area between the insulating part and the metal part; the second radiator extends along the first direction, and the first radiator extends along the second direction, and the first direction and the second direction are arranged to intersect.

[0009] According to an embodiment of the present application, the first direction is an arrangement direction of the insulating portion and the metal portion, and the second direction is perpendicular to the first direction.

[0010] According to an embodiment of the present application, the antenna further includes a third radiator, and the third radiator is connected to the first radiator and the second radiator respectively.

[0011] According to an embodiment of the present application, a first groove is provided between the first radiator and the second radiator, for dividing the first radiator and the second radiator;

[0012] The housing assembly further includes a feeding element, which is disposed in the first slot and located between the first radiator and the second radiator.

[0013] According to an embodiment of the present application, a second groove is provided at one end of the first radiator close to the second radiator or at one end of the second radiator close to the first radiator, for dividing the first radiator and the second radiator;

[0014] The housing assembly further includes a feeding element, which is disposed in the second slot and located between the first radiator and the second radiator.

[0015] In order to solve the above technical problems, another technical solution adopted in the present application is: a projection device, the projection device comprising any of the shell components and internal components described above.

[0016] The beneficial effects of the present application are as follows: a shell assembly of a projection device of the present application includes a shell and an antenna. The shell includes an insulating part and a metal part connected; the antenna includes a first radiator and a second radiator connected. The first radiator is located in the insulating part, and the second radiator is located in the metal part. At this time, the second radiator will not occupy the space of the insulating part, and the space of the insulating part can be compressed exponentially without affecting the antenna routing. The smaller the space of the insulating part, the larger the space of the metal part, and the better the texture of the entire shell assembly. In addition, since the routing width of the antenna will not be affected, the texture of the shell assembly can be improved without affecting the antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 It is a schematic diagram of the exploded structure of an embodiment of a housing assembly of the present application;

[0019] Figure 2 is a schematic cross-sectional structure diagram of an embodiment of a housing assembly of the present application;

[0020] Figure 3 is a schematic diagram of an exploded structure of another embodiment of the housing assembly of the present application;

[0021] Figure 4 is a schematic cross-sectional structure diagram of another embodiment of the housing assembly of the present application;

[0022] Figure 5 yes Figure 4 Schematic diagram of the locally enlarged structure of A in the middle. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] See also Figure 1 , Figure 1 It is a schematic diagram of the exploded structure of an embodiment of a housing assembly of the present application;

[0028] An embodiment of the present application provides a housing assembly 10 of a projection device. The housing assembly 10 includes an antenna 11 and a housing 12. The housing 12 includes an insulating portion 121 and a metal portion 122 connected to each other. The antenna 11 includes a first radiator 111 and a second radiator 112 connected to each other. The first radiator 111 is located in the insulating portion 121, and the second radiator 112 is located in the metal portion 122.

[0029] As can be seen from the above structure, the first radiator 111 is located in the insulating part 121. Since the insulating part 121 is in a clear area, and the resonant frequency of the radiator in the clear area is often easier to match its own natural frequency, when the first radiator 111 is located in the insulating part 121, the resonant frequency of the first radiator 111 is closer to its natural frequency, so the signal emission intensity of the first radiator 111 is better, its directivity is also better, and the communication quality is better. The second radiator 112 is set in the metal part 122. At this time, the second radiator 112 can become a part of the metal part 122, and then the second radiator 112 can further improve the texture of the housing 12 while ensuring the communication quality without affecting its directivity. The second radiator 112 is located in the metal part 122 so that the second radiator 112 can be integrated into the metal part 122, so that the second radiator 112 does not occupy the space of the insulating part 121, and can compress the space of the insulating part 121 exponentially without affecting the routing of the antenna 11. When the space of the insulating part 121 is smaller, the space of the metal part 122 is larger, and the texture of the entire shell assembly 10 is better. In addition, since the routing width of the antenna 11 will not be affected, the texture of the shell assembly 10 can be improved without affecting the performance of the antenna 11. Therefore, by setting the first radiator 111 in the insulating part and the second radiator 112 in the metal part 122, the space of the metal part 122 can be increased while ensuring the strength and directivity of the antenna 11 radiation signal, so as to improve the overall texture of the shell assembly 10.

[0030] It should be noted that the routing length of the first radiator 111 in the insulating portion 121 depends on the frequency it needs to cover. Since the dielectric constant of the insulating portion 121 is usually greater than 1, the actual routing length of the first radiator 111 in the insulating portion 121 will be less than 1 / 4 wavelength. For example, in some embodiments, when the frequency that the first radiator 111 needs to cover is 2.4 GHZ, at this time, the routing length of the first radiator 111 is about 17-25 mm. Of course, in some other embodiments, when the frequency that the first radiator 111 needs to cover is other frequency bands, the routing length of the first radiator 111 is 1 / 4 of the wavelength of the corresponding frequency band. When the frequency band covered by the first radiator 111 is higher, at this time, the wavelength corresponding to the first radiator 111 is smaller, and thus the routing length of the first radiator 111 will also be smaller.

[0031] See also Figure 1 to Figure 2 , Figure 2 : is a schematic diagram of the cross-sectional structure of an embodiment of the housing assembly of the present application. In an embodiment of the present application, the first radiator 111 and the second radiator 112 are both extended along the first direction X. Specifically, the first radiator 111 is extended along the first direction X, and the second radiator 112 is extended along the first direction X. At this time, the space of the first radiator 111 in the insulating part 121 along the first direction X can be shortened, and then the space of the insulating part 121 along the first direction X can be reduced. Since the volume of the housing is usually fixed, after the space of the insulating part 121 along the first direction X is reduced, the space of the metal part 122 along the first direction X will increase, and then the metal texture of the housing will be better.

[0032] Furthermore, the second radiator 112 and the metal part 122 are directly connected or coupled. Specifically, when the second radiator 112 and the metal part 122 are connected by direct connection, the second radiator 112 is located on the inner side of the metal part 122, and there is a gap between the second radiator 112 and the metal part 122, and the second radiator 112 and the metal part 122 can be directly connected by means of shrapnel or conductive cotton. At this time, the direct connection method is more convenient for technicians to operate, and the operation method is simple and fast. In addition, since the second radiator 112 is located on the inner side of the metal part 122 when it is directly connected to the metal part 122, the second radiator 112 will not be exposed to the outside of the shell, which can make the appearance of the shell more beautiful.

[0033] Optionally, in some embodiments, the second radiator 112 and the metal part 122 may be directly connected by other methods such as screws, which will not be described in detail here.

[0034] When the second radiator 112 and the metal part 122 are connected by coupling, the second radiator 112 is designed to be a large area of ​​metal, and the second radiator 112 and the metal part 122 are arranged in parallel, wherein the second radiator 112 is used as a radiation device for transmitting signals by the transmitting antenna 11, and the metal part 122 is used to receive signals. Since the second radiator 112 generates a resonant frequency during the coupling connection with the metal part 122, the signal emitted by the second radiator 112 can be regulated and directed by adjusting the distance between the second radiator 112 and the metal part 122, or adjusting the shape of the second radiator 112, so that the resonant frequency of the second radiator 112 can be close to its natural frequency in the corresponding frequency band. Therefore, the coupling connection between the second radiator 112 and the metal part 122 can facilitate the later debugging of the technicians. Further, since the second radiator 112 is located inside the metal part 122, the second radiator 112 will not be exposed to the outside, thereby making the appearance of the shell more beautiful.

[0035] Optionally, when the second radiator 112 and the metal portion 122 are connected by coupling, the area of ​​the second radiator 112 can be specifically set according to the frequency band it needs to cover. In some embodiments, when the frequency to be covered by the second radiator 112 is the 2.4 GHZ frequency band, at this time, the area of ​​the second radiator 112 is generally greater than 30 square meters. Of course, in some other embodiments, when the frequency to be covered by the second radiator 112 is different, the area of ​​the second radiator 112 will also change accordingly, which will not be repeated here.

[0036] Optionally, since the shape and size of the metal part 122 will affect the coupling frequency between the second radiator 112 and the metal part 122, in some embodiments, a grounding point can be set on the metal part 122 to make the coupling frequency consistent with the natural frequency of the second radiator 112 in this frequency band.

[0037] In one embodiment of the present application, the first radiator 111 is parallel to the insulating portion 121, and the second radiator 112 is arranged in parallel to the metal portion 122, wherein the first direction X is the arrangement direction of the insulating portion 121 and the metal portion 122. By making the first radiator 111 parallel to the insulating portion 121, and the second radiator 112 parallel to the metal portion 122, at this time, since the space of the metal portion 122 is relatively high, the area of ​​the second radiator 112 can be adjusted according to the frequency band covered by the antenna 11, so that there is no need to shorten the routing of the antenna 11, and thus the debugging difficulty of the antenna 11 is not affected, and the directivity of the antenna 11 can be well guaranteed, ensuring the communication quality of the antenna 11. At the same time, since the space of the insulating portion 121 is reduced and the space of the metal portion 122 is increased, at this time, the metal texture of the entire shell is also better.

[0038] In one embodiment of the present application, a first slot 117 is provided between the first radiator 111 and the second radiator 112, for dividing the first radiator 111 and the second radiator 112. The provision of the first slot 117 can separate the first radiator 111 and the second radiator 112. At this time, when the technician debugs the antenna 11, the first radiator 111 and the second radiator 112 can be debugged separately, so that the resonant frequencies of the two are close to the natural frequencies in the corresponding frequency bands, thereby improving the performance of the first radiator 111 and the second radiator 112. Specifically, the first radiator 111 and the second radiator 112 can both have good directivity. In addition, since the first radiator 111 and the second radiator 112 are separated by the first slot 117, the two will not interfere with each other at this time, so it is more convenient and quick for the technician to debug.

[0039] Optionally, the first radiator 111 and the second radiator 112 form the antenna 11 as a whole, and the first slot 117 can be realized by slotting the antenna 11 as a whole. Alternatively, the first radiator 111 and the second radiator 112 can also be separate radiators, and the antenna 11 is formed by combining the first radiator 111 and the second radiator 112. In this case, the gap between the first radiator 111 and the second radiator 112 is the first slot 117. Alternatively, when the first radiator 111 and the second radiator 112 are separate radiators, the first radiator 111 and the second radiator 112 are connected, and in this case, a slot can be made on the first radiator 111 or the second radiator 112 to form the first slot 117, which is not limited here.

[0040] It should be noted that the width of the first slot 117 is generally 1-3 mm. Specifically, the width and depth of the first slot 117 can be determined by technicians according to the performance of the antenna 11 during the specific debugging process, and are not limited here.

[0041] See also Figure 3 to Figure 4 , Figure 3 is a schematic diagram of an exploded structure of another embodiment of the housing assembly of the present application; Figure 4 It is a schematic cross-sectional structure diagram of another embodiment of the housing assembly of the present application.

[0042] In another embodiment of the present application, the first radiator 111 is located in the connection area between the insulating part 121 and the metal part 122. The second radiator 112 extends along the first direction X, and the first radiator 111 extends along the second direction Y. The first direction X and the second direction Y are arranged to intersect. At this time, the first radiator 111 is located in the connection area between the insulating part 121 and the metal part 122, which can further reduce the space of the insulating part 121, thereby increasing the space of the metal part 122, so as to better improve the texture of the housing.

[0043] Specifically, the first direction X is the arrangement direction of the insulating part 121 and the metal part 122, and the second direction Y is perpendicular to the first direction X. The second radiator 112 extends toward the first direction X, and the first radiator 111 extends along the second direction Y. At this time, the space of the metal part 122 can be fully utilized, so that the antenna 11 is located in the metal part 122, so that the antenna 11 can become a part of the metal part 122, so as to better reduce the space of the insulating part 121 and improve the overall texture of the housing assembly 10. At the same time, the signal emitted by the antenna 11 can be more uniform, thereby improving the stability of communication.

[0044] See also Figures 3 to 5 , Figure 5 yes Figure 4 Schematic diagram of the locally enlarged structure of A in the middle.

[0045] In another embodiment of the present application, a second slot 118 is provided at one end of the first radiator 111 close to the second radiator 112, or at one end of the second radiator 112 close to the first radiator 111, for dividing the first radiator 111 and the second radiator 112. The provision of the second slot 118 can separate the first radiator 111 and the second radiator 112. At this time, when the technician debugs the antenna 11, the first radiator 111 and the second radiator 112 can be debugged separately, so that the resonant frequencies of the two are close to the natural frequencies in the corresponding frequency bands, so that the first radiator 111 and the second radiator 112 can have good directivity. In addition, since the first radiator 111 and the second radiator 112 are separated by the second slot 118, the two will not interfere with each other, so it is more convenient and quick for the technician to debug.

[0046] Optionally, the second slot 118 may be disposed at an end of the first radiator 111 close to the second radiator 112 , or the second slot 118 may be disposed at an end of the second radiator 112 close to the first radiator 111 , which is not limited here.

[0047] Optionally, the first radiator 111 and the second radiator 112 form the antenna 11 as a whole, and the second slot 118 can be realized by slotting the antenna 11 as a whole. Alternatively, the first radiator 111 and the second radiator 112 can also be separate radiators, and the antenna 11 is formed by combining the first radiator 111 and the second radiator 112. In this case, the gap between the first radiator 111 and the second radiator 112 is the second slot 118. Alternatively, when the first radiator 111 and the second radiator 112 are separate radiators, the first radiator 111 and the second radiator 112 are connected, and in this case, a slot can be made on the first radiator 111 or the second radiator 112 to form the second slot 118, which is not limited here.

[0048] It should be noted that the width of the second slot 118 is generally 1-3 mm. Specifically, the width and depth of the second slot 118 can be set by technicians according to the performance of the antenna 11 during the debugging process, and there is no restriction at this time.

[0049] In one embodiment of the present application, the antenna 11 further includes a third radiator 116. The third radiator 116 is connected to the first radiator 111 and the second radiator 112, respectively. The provision of the third radiator 116 can better adjust the impedance of the antenna 11. Specifically, during the process of debugging the antenna 11 by the technician, the impedance of the antenna 11 can be adjusted by adjusting the position of the third radiator 116. When the third radiator 116 is at a certain position, the impedance of the antenna 11 is the smallest. Then, the third radiator 116 is provided at the position so that the third radiator 116 is connected to the first radiator 111 and the second radiator 112, respectively. At this time, the impedance of the antenna 11 is small and the directivity of the antenna 11 is good, thereby being able to well improve the communication quality.

[0050] In an embodiment of the present application, the projection device further includes a feeding element 119 , wherein the feeding element 119 is disposed in the first slot 117 or a feeding point is disposed in the second slot 118 , and the feeding element 119 is disposed between the first radiator 111 and the second radiator 112 .

[0051] Specifically, when the first radiator 111 is located on the insulating portion 121 and the second radiator 112 is located on the metal portion 122, the feeder 119 is disposed in the first slot 117, and the feeder 119 is disposed between the first radiator 111 and the second radiator 112. By disposing the feeder 119, during the debugging of the antenna 11, the technician can optimize the impedance of the antenna 11 by moving the position of the feeder 119, thereby improving the performance of the antenna 11.

[0052] When the first radiator 111 and the second radiator 112 are both located on the metal portion 122, the feeder 119 is disposed in the second slot 118, and the feeder 119 is disposed between the first radiator 111 and the second radiator 112. By disposing the feeder 119, the technician can optimize the impedance of the antenna 11 by moving the position of the feeder 119 during the debugging of the antenna 11, thereby improving the performance of the antenna 11. In addition, the provision of the feeder 119 can also enable the antenna 11 to form a slot antenna 11, and the antenna 11 can meet the coverage of high frequency bands, such as the WIFI 5G band.

[0053] Another embodiment of the present application provides a projection device (not shown in the figure). The projection device includes a housing assembly 10 and an internal assembly. At this time, the antenna 11 is partially arranged in the metal part 122, so that part of the antenna 11 can be integrated into the metal part 122, so that the part of the antenna 11 does not occupy the space of the insulating part 121, and can compress the space of the insulating part 121 without affecting the routing of the antenna 11. When the space of the insulating part 121 is smaller, the space of the metal part 122 is higher, and the texture of the entire housing assembly 10 is better. Therefore, the appearance of the projection device is more beautiful and the texture is better. In addition, since the routing width of the antenna 11 will not be affected, the difficulty of debugging the antenna 11 will be reduced accordingly. Further, since part of the antenna 11 can become part of the metal part 122, at this time, the signal transmission strength of the part of the antenna 11 located in the metal part 122 will not be interfered by the metal material of the metal part 122, so that the strength of the signal radiated by the antenna 11 can be guaranteed, and the signal radiated by the antenna 11 can be balanced in all directions, and the directionality is better. Therefore, the projection device can receive signals more stably during use by the user. Therefore, by partially arranging the antenna 11 in the metal part 122, the texture and aesthetics of the projection device can be improved while ensuring the communication quality of the projection device.

[0054] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0055] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0056] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A housing assembly of a projection device, characterized in that: The housing assembly (10) comprises: A housing (12) comprising an insulating portion (121) and a metal portion (122) connected thereto; An antenna (11) comprising a first radiator (111) and a second radiator (112) connected to each other; The first radiator (111) is located in the insulating part (121), and the second radiator (112) is located in the metal part (122).

2. The housing assembly according to claim 1, characterized in that: The first radiator (111) and the second radiator (112) are both extended along a first direction (X).

3. The housing assembly according to claim 2, characterized in that: The second radiator (112) and the metal part (122) are directly connected or coupled.

4. The housing assembly according to claim 2, characterized in that: The first radiator (111) is parallel to the insulating part (121), the second radiator (112) is arranged in parallel to the metal part (122), and the first direction (X) is the arrangement direction of the insulating part (121) and the metal part (122).

5. The housing assembly according to claim 1, characterized in that: The first radiator (111) is located in a connection area between the insulating part (121) and the metal part (122); the second radiator (112) extends along a first direction (X), and the first radiator (111) extends along a second direction (Y), and the first direction (X) and the second direction (Y) are arranged to intersect.

6. The housing assembly according to claim 5, characterized in that: The first direction (X) is the arrangement direction of the insulating part (121) and the metal part (122), and the second direction (Y) is perpendicular to the first direction (X).

7. The housing assembly according to any one of claims 1 to 6, characterized in that: The antenna (11) further comprises a third radiator (116), wherein the third radiator (116) is connected to the first radiator (111) and the second radiator (112) respectively.

8. The housing assembly according to claim 2, characterized in that: A first groove (117) is provided between the first radiator (111) and the second radiator (112), and is used to separate the first radiator (111) and the second radiator (112); The housing assembly (10) further comprises a feeding element (119) which is arranged in the first slot (117) and is located between the first radiator (111) and the second radiator (112).

9. The housing assembly according to claim 5, characterized in that: A second groove (118) is provided at one end of the first radiator (111) close to the second radiator (112) or at one end of the second radiator (112) close to the first radiator (111), for dividing the first radiator (111) and the second radiator (112); The housing assembly (10) further comprises a feeding element (119) which is arranged in the second slot (118) and is located between the first radiator (111) and the second radiator (112).

10. A projection device, characterized in that: The projection device comprises a housing assembly (10) and an internal assembly as described in any one of claims 1 to 9.

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