A tuner structure and set-top box

Abstract

A tuner structure and a set top box, wherein the tuner structure comprises a tuner connector, a shielding cover and a circuit board. The shielding cover is arranged at the end of the tuner connector with pins, and the tuner connector is electrically connected with the circuit board through the pins. The shielding cover is mounted on the circuit board, and part of the area on the circuit board is shielded by the shielding cover. The shielding cover is provided with a relief gap at the opening edge, and the RF input wire and the serpentine wire in the circuit board are arranged in the shielding area of the shielding cover, and the RF input wire and the serpentine wire are electrically connected with other parts of the circuit in the circuit board through the relief gap. The tuner structure, by letting the shielding cover cover only the RF input wire and the serpentine wire area on the circuit board which is easy to be disturbed, ensures the anti-interference performance while reducing the size of the shielding cover, reduces the cost and size of the tuner structure, reduces the cost and size of the set top box, and improves the market competitiveness of the set top box.

Description

Technical Field

[0001] This utility model relates to the field of digital television equipment technology, specifically to a tuner structure and a set-top box. Background Technology

[0002] The tuner, also known as the high-frequency head, is a crucial component in television or radio sets. To protect against external interference signals, existing tuner designs typically use a shield made of materials with electromagnetic shielding capabilities, such as metal, to cover the tuner's circuitry. However, in current tuner designs, the shield usually completely covers the tuner's circuit board, resulting in higher production costs. Furthermore, the larger shield occupies more space, hindering the miniaturization of set-top boxes. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a tuner structure that can reduce the size of the shielding cover while avoiding external interference to the signal, reduce the size of the tuner, reduce the cost of the tuner and set-top box, and improve the market competitiveness of the product.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: A tuner structure includes a tuner connector, a shield, and a circuit board, wherein the shield is disposed at one end of the tuner connector with pins, the tuner connector is electrically connected to the circuit board through the pins, the shield is mounted on the circuit board, a portion of the circuit board is shielded by the shield, an avoidance notch is provided at the opening edge of the shield, the RF input trace and the serpentine trace in the circuit board are disposed within the shielding area of ​​the shield, and the RF input trace and the serpentine trace are electrically connected to other parts of the circuit in the circuit board through the avoidance notch.

[0005] Compared to existing technologies, the advantages of this invention are as follows: This tuner structure, by creating a notch at the opening of the shielding cover, allows the susceptible RF input traces and serpentine traces in the tuner circuitry to be moved inside the shielding cover to block interference. Simultaneously, the notch provides electrical connection to other circuit components on the circuit board. This allows the shielding cover to only cover the susceptible RF input traces and serpentine traces on the circuit board, effectively shielding only a portion of the board and reducing the size of the shielding cover. Because this tuner structure shields only the susceptible areas of the circuit board, it reduces the size and production cost of the shielding cover, lowers the space requirements of the tuner, and helps reduce the production cost and size of the set-top box, thereby enhancing the set-top box's market competitiveness.

[0006] In the tuner structure described above, the shield is rectangular, and the end of the shield connected to the tuner connector is provided with a clearance hole that allows the pin to extend into.

[0007] In the tuner structure described above, the shielding cover is integrally bent from a metal plate.

[0008] In the tuner structure described above, at least two insertion ears are provided at the opening edge of the shield, and corresponding insertion holes matching the insertion ears are provided on the circuit board. The shield is mounted on the circuit board by inserting the insertion ears into the insertion holes.

[0009] In the tuner structure described above, an insertion ear is provided on both the left and right sides of the opening of the shield, and the middle part of the insertion ear on both sides of the opening of the shield arches to a certain height towards the inside or outside of the shield.

[0010] In the tuner structure described above, the clearance notch is located at the opening edge of the shield on the side facing away from the tuner connector, and an insertion ear is provided at the opening edge of the shield on the side facing away from the tuner connector. The insertion ear on the side of the shield facing away from the tuner connector is biased towards one side of the shield.

[0011] A set-top box includes the tuner structure described above.

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the tuner connector and shielding cover according to an embodiment of the present utility model.

[0014] Figure 2 This is a three-dimensional structural diagram of the tuner structure according to an embodiment of the present utility model.

[0015] Figure 3 This is a side view of the tuner connector and shielding cover according to an embodiment of the present invention.

[0016] Figure 4 This is a rear view of the shielding cover according to an embodiment of the present utility model.

[0017] Explanation of icon numbers: 100 Tuner connector, 110 Pins, 120 Insertion boss, 200 Shielding cover, 210 Clearance notch, 220 Insertion ear, 230 Clearance hole, 240 Clip, 250 Slot, 300 Circuit board, 310 RF input trace and serpentine trace, 320 Insertion hole. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, with reference to Figure 1 , Figure 2 and Figure 4 This utility model provides a tuner structure, including a tuner connector 100, a shield 200, and a circuit board 300. The shield 200 is disposed at the end of the tuner connector 100 with pins 110. The tuner connector 100 is electrically connected to the circuitry on the circuit board 300 via the pins 110. The shield 200 is mounted on the circuit board 300, shielding a portion of the circuit board 300. A clearance notch 210 is provided at the opening edge of the shield 200. RF input traces and serpentine traces 310 in the circuit board 300 are located within the shielded area of ​​the shield 200, and are electrically connected to other parts of the circuitry on the circuit board 300 via the clearance notch 210. This tuner structure features a clearance notch 210 at the opening edge of the shield 200. After the shield 200 is mounted on the circuit board 300, this clearance notch 210 forms a channel with the surface of the circuit board 300, allowing circuitry to pass through. This allows the susceptible RF input traces and serpentine traces 310 areas of the circuit board 300 to be placed within the shielded area of ​​the shield 200. Furthermore, the RF input traces and serpentine traces 310 can connect to other circuitry on the circuit board 300 through the clearance notch 210, thereby reducing interference to the input signal of the tuner connector 100 without affecting the electrical connection between the tuner connector 100 and the circuit board 300. Because this tuner structure only requires the shield 200 to cover a portion of the circuit board 300, the size of the shield 200 is reduced, thus lowering the production cost and space requirements of the tuner structure. This contributes to lowering the cost and miniaturizing the set-top box, enhancing its market competitiveness.

[0019] Reference Figures 1 to 4 In this embodiment, for ease of manufacturing, the shielding cover 200 is a rectangular cover integrally bent from a punched metal sheet. The end of the shielding cover 200 connected to the tuner connector 100 has a clearance hole 230 for the pins 110 to insert into. The end face of the tuner connector 100 with the pins 110 has two insertion bosses 120 for connecting to the shielding cover 200, symmetrically arranged on both sides of the clearance hole 230. The side of the shielding cover 200 connected to the tuner connector 100 has two corresponding insertion holes for the insertion bosses 120 to be inserted, facilitating the connection between the shielding cover 200 and the tuner connector. The input end of the RF input trace has pads for soldering the pins 110 of the tuner connector 100, and the tuner connector 100 is electrically connected to the input end of the RF input trace via the pins 110. (Refer to...) Figure 3 In this embodiment, the upper sidewall and both sides of the rear sidewall of the shielding cover 200 are provided with bent ears. The bent ears bend towards the corresponding left and rear sidewalls of the shielding cover 200 and wrap around the left and right sidewalls to ensure the stability of the shielding cover 200 structure. Two wedge-shaped buckles 240 are provided at the rear ends of the left and right sidewalls of the shielding cover 200. Correspondingly, matching slots 250 are provided on the bent ears on both sides of the rear sidewall of the shielding cover 200. After the two bent ears of the rear sidewall bend forward, the buckles 240 can be precisely inserted into the slots 250, thereby facilitating the connection and fixation between the rear sidewall and the left and right sidewalls of the shielding cover 200.

[0020] Reference Figures 1 to 4 In this embodiment, to facilitate the connection and installation between the tuner connector 100, the shield 200, and the circuit board 300, the lower ends of the left, right, and rear side walls of the shield 200 are provided with insertion ears 220. Correspondingly, the circuit board 300 has insertion holes 320 at corresponding positions that mate with the insertion ears 220. The shield 200 is installed on the circuit board 300 by inserting the insertion ears 220 into the insertion holes 320 of the circuit board 300. The insertion ears 220 on the left side wall are symmetrical to those on the right side wall, and both the insertion ears 220 on the left and right sides are slightly arched outwards by a certain height. Since the shielding cover 200 is typically made of a flexible metal material, the slightly outward-arched insertion ear 220 deforms slightly under external force during insertion into the insertion hole 320, thus smoothly inserting into the insertion hole 320. After being fully inserted into the insertion hole 320, it returns to its original shape, thereby securing the shielding cover 200 to the circuit board 300. It is understood that slightly inward-arching insertion ears 220 on the left and right sidewalls can also achieve the same technical effect. In this embodiment, referring to... Figure 4 Since the width of the shield 200 is usually wider than the length of the shield 200, in order to allow more space for the clearance notch 210 to accommodate the connection lines between the internal and external circuits of the shield 200, the clearance notch 210 is located at the lower end of the rear side wall of the shield 200. The insertion ear 220 at the lower end of the rear side wall is biased to the left or right side of the shield 200 to leave more space for the clearance notch 210.

[0021] Based on the same inventive concept, the set-top box of this utility model embodiment includes the above-described tuner structure. By reducing the size of the shielding cover 200 while ensuring the tuner's anti-interference capability for receiving signals, the production cost of the tuner structure is reduced, thereby lowering the production cost of the set-top box. Furthermore, by reducing the installation space of the tuner structure, space is provided for other components, which is beneficial for the miniaturization of the set-top box and makes it more competitive in the market.

[0022] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0023] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A tuner structure, characterized in that, The device includes a tuner connector (100), a shield (200), and a circuit board (300). The shield (200) is disposed at one end of the tuner connector (100) having a pin (110). The tuner connector (100) is electrically connected to the circuit board (300) through the pin (110). The shield (200) is mounted on the circuit board (300). A portion of the circuit board (300) is covered by the shield (200). A clearance notch (210) is provided at the opening edge of the shield (200). RF input traces and serpentine traces (310) in the circuit board (300) are disposed within the covered area of ​​the shield (200). The RF input traces and serpentine traces are electrically connected to other parts of the circuit board (300) through the clearance notch (210).

2. The tuner structure according to claim 1, characterized in that, The shield (200) is rectangular, and the end of the shield (200) connected to the tuner connector (100) is provided with a clearance hole (230) into which the pin (110) can be inserted.

3. The tuner structure according to claim 1, characterized in that, The shielding cover (200) is integrally bent from a metal plate.

4. The tuner structure according to claim 2, characterized in that, The shield (200) has at least two insertion ears (220) at the opening edge, and the circuit board (300) has corresponding insertion holes (320) that match the insertion ears (220). The shield (200) is installed on the circuit board (300) by inserting the insertion ears (220) into the insertion holes (320).

5. The tuner structure according to claim 4, characterized in that, An insertion ear (220) is provided on the left and right sides of the opening of the shield (200). The middle part of the insertion ear (220) on the left and right sides of the opening of the shield (200) arches to the inside or outside of the shield (200) to a certain height.

6. The tuner structure according to claim 4, characterized in that, The clearance notch (210) is located at the opening edge of the shield (200) on the side away from the tuner connector (100). The shield (200) has an insertion ear (220) at the opening edge on the side away from the tuner connector (100). The insertion ear (220) on the side of the shield (200) away from the tuner connector (100) is biased towards one side of the shield (200).

7. A set-top box, characterized in that, Includes the tuner structure according to any one of claims 1 to 6.

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