CN218888593U - Wireless screen projection device - Google Patents
Wireless screen projection device Download PDFInfo
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- CN218888593U CN218888593U CN202223161084.6U CN202223161084U CN218888593U CN 218888593 U CN218888593 U CN 218888593U CN 202223161084 U CN202223161084 U CN 202223161084U CN 218888593 U CN218888593 U CN 218888593U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model discloses a wireless screen projection device, belonging to the technical field of screen projection, which comprises a transmitter and a receiver, wherein the transmitter is connected with screen projection equipment and comprises a first control circuit board, and a first WiFi module is arranged on the first control circuit board; the receiver is connected with the display device, including second control circuit board and second wiFi module, second wiFi module and first wiFi module wireless communication, second wiFi module includes wiFi chip and antenna module, the antenna module includes board-mounted antenna and external FPC antenna, board-mounted antenna and wiFi chip all locate on the second control circuit board, external FPC antenna locates on the conch wall of receiver, be equipped with on the second control circuit board and be used for first shell fragment and the second shell fragment of being connected with external FPC antenna electricity, the wiFi chip links to each other with board-mounted antenna and second shell fragment through first filter circuit and second filter circuit respectively.
Description
Technical Field
The utility model relates to a throw screen technical field, especially relate to a wireless screen device of throwing.
Background
With the development of intelligent application technology, no matter throw screen leisure entertainment or throw the screen meeting in the office field at home, all have very big demand to high-efficient, convenient throwing screen technique. At present, the screen projection can be divided into wired screen projection and wireless screen projection, the wired screen projection is limited by a transmission cable, and a lot of inconvenience is caused in use. With the development of 5G application technology, wireless network screen projection is greatly applied in the market, but at present, screen projection is generally realized by adopting a user code scanning installation related driving mode, the screen projection mode needs a user to download and install corresponding driving, then a transmitting end and a receiving end are matched with each other, and plug and play cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wireless screen device of throwing is provided to plug and play.
In order to solve the technical problem, the purpose of the utility model is realized through following technical scheme: the wireless screen projection device comprises a transmitter and a receiver, wherein the transmitter is connected with screen projection equipment and comprises a first control circuit board, and a first WiFi module is arranged on the first control circuit board; the receiver is connected with the display device and comprises a second control circuit board and a second WiFi module, the second WiFi module is in wireless communication with the first WiFi module, the second WiFi module comprises a WiFi chip and an antenna module, the antenna module comprises an onboard antenna, the onboard antenna reaches the WiFi chip, the antenna module further comprises an external FPC antenna, the external FPC antenna is arranged on the shell wall of the receiver, a first elastic sheet and a second elastic sheet which are used for being electrically connected with the external FPC antenna are arranged on the second control circuit board, and the WiFi chip is respectively connected with the onboard antenna and the second elastic sheet through a first filter circuit and a second filter circuit.
The further technical scheme is as follows: the first antenna end of the WiFi chip is connected with the on-board antenna through the first filter circuit after passing through a first capacitor, the second antenna end of the WiFi chip is connected with the second elastic sheet through the second filter circuit after passing through a second capacitor, and the first elastic sheet is grounded.
The further technical scheme is as follows: the first filter circuit comprises a first resistor, a third grounded capacitor and a fourth grounded capacitor, the first resistor is connected with the first capacitor in series and then connected with the on-board antenna, and the third grounded capacitor and the fourth grounded capacitor are respectively and electrically connected to two ends of the first resistor; the second filter circuit comprises a second resistor, a fifth grounding capacitor and a sixth grounding capacitor, the second resistor is connected with the second capacitor in series and then connected with the second elastic sheet, and the fifth grounding capacitor and the sixth grounding capacitor are electrically connected to two ends of the second resistor respectively.
The further technical scheme is as follows: still be equipped with power source, second power module, HDMI output interface and second central processing unit module on the second control circuit board, the second power module HDMI output interface reaches second wiFi module all with second central processing unit module links to each other, power source passes through second power module with second central processing unit module links to each other, power source reaches HDMI output interface respectively through power connecting wire and HDMI data line with display device links to each other.
The further technical scheme is as follows: the second control circuit board is covered with a shielding cover, and the shielding cover is fixed on the second control circuit board through a plurality of shielding cover clips.
The further technical scheme is as follows: the number of the shield cover clips is four, the shield cover clips are respectively located on the edges of the periphery of the shield cover, and the shield cover clips are respectively connected with the shield cover and the second control circuit board through epoxy glue.
The further technical scheme is as follows: the receiver further includes a heat sink attached to the shield by VHB double sided adhesive, the shield being located between the second control circuit board and the heat sink.
The further technical scheme is as follows: the wall of the receiver is provided with a metal radiating fin, the outer wall of the power interface is provided with double-sided conductive foam, and the double-sided conductive foam is respectively in contact connection with the outer wall of the power interface and the metal radiating fin.
The further technical scheme is as follows: the power interface is a Type-C interface.
The further technical scheme is as follows: the first control circuit board is further provided with a connecting port, a first power supply module, a signal conversion IC and a first central processing unit module, the signal conversion IC and the first power supply module are respectively connected with the connecting port and the first central processing unit module, the first central processing unit module is connected with the first WiFi module, and the connecting port is connected with the screen projection equipment through a data line.
The utility model has the advantages of: the utility model relates to a wireless screen device of throwing through set up mutual wireless communication's first wiFi module and second wiFi module respectively through transmitter and receiver in order to realize pairing of transmitter and receiver, realize plug-and-play, so that the transmitter will be received throw video data transmission that screen equipment need throw after to the receiver and convey to display device and show, furthermore, second wiFi module is through setting up the wiFi chip and including the antenna module of board-mounted antenna and external FPC antenna, in order to realize two receipts double-shot, thereby promote transmission efficiency and promote transmission quality, the wiFi chip links to each other with board-mounted antenna and the second shell fragment that is used for with external FPC antenna connection through first filter circuit and second filter circuit respectively, the filtering clutter, improve the whole benefit of antenna.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless screen projection device according to an embodiment of the present invention;
fig. 2 is an architecture diagram of a wireless screen projection device according to an embodiment of the present invention;
fig. 3 is an internal architecture diagram of a receiver of a wireless screen projection device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second control circuit board of a receiver of a wireless screen projection device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an internal structure of a receiver of a wireless screen projection device according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a second WiFi module of a receiver of a wireless screen projection device according to an embodiment of the present invention;
fig. 7 is an internal architecture diagram of a transmitter of a wireless screen projection device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 to 7, fig. 1 is a schematic structural diagram of a wireless screen projection device according to an embodiment of the present invention, where the wireless screen projection device includes a transmitter 110 and a receiver 210, the transmitter 110 is connected to a screen projection apparatus 100, and includes a first control circuit board, and a first WiFi module 114 is disposed on the first control circuit board; the receiver 210 is connected with the display device 200 and comprises a second control circuit board 30 and a second WiFi module 214, the second WiFi module 214 is in wireless communication with the first WiFi module 114, the second WiFi module 214 comprises a WiFi chip 321 and an antenna module, the antenna module comprises an onboard antenna 310 and an external FPC (flexible printed circuit) antenna, the onboard antenna 310 and the WiFi chip 321 are arranged on the second control circuit board 30, the external FPC antenna is arranged on the shell wall of the receiver 210, a first elastic sheet 311 and a second elastic sheet 312 which are electrically connected with the external FPC antenna are arranged on the second control circuit board 30, and the WiFi chip 321 is connected with the onboard antenna 310 and the second elastic sheet 312 through a first filter circuit 322 and a second filter circuit 323 respectively.
The transmitter 110 can realize DP signal transmission screen projection and USB signal transmission screen projection, and is applied to the screen projection device 100 with DP screen projection function, such as an electronic device like a notebook computer and a mobile phone, so as to encode and output a video to be projected on the screen of the screen projection device 100. The receiver is applied to a display device with an HDMI interface, such as a television, so as to decode the received encoded signal stream and output the decoded signal stream to the display device for displaying and playing. The wireless screen projection device is characterized in that the transmitter 110 and the receiver 210 are respectively provided with the first WiFi module 114 and the second WiFi module 214 which are in wireless communication with each other, so that the transmitter 110 and the receiver 210 can be paired, no additional network configuration is needed, no installation drive is needed, the debugging time is saved, and plug and play is realized, so that the transmitter 110 transmits the received data information of the screen projection device 100 needing screen projection to the receiver 210 and then transmits the data information to the display device 200 for display, moreover, the second WiFi module 214 is provided with the WiFi chip 321 and the antenna module comprising the on-board antenna 310 and the external FPC antenna, so that double-receiving and double-transmitting are realized, the transmission efficiency is improved, the transmission quality is improved, the WiFi chip 321 is respectively connected with the on-board antenna 310 and the second elastic piece 312 connected with the external FPC antenna through the first filter circuit 322 and the second filter circuit 323, clutter filtering can be filtered, the overall benefit of the antenna is improved, and the screen projection quality is improved.
Specifically, a first antenna end ANT1 of the WiFi chip 321 is connected to the on-board antenna 310 through the first filter circuit 322 after passing through a first capacitor C1, a second antenna end ANT2 of the WiFi chip 321 is connected to the second elastic piece 312 through the second filter circuit 323 after passing through a second capacitor C2, and the first elastic piece 311 is grounded. Through setting up first electric capacity C1 and second electric capacity C2 to play the effect of blocking direct current and alternating current, and can realize impedance matching, improve the holistic transmission benefit of antenna.
Specifically, the first filter circuit 322 includes a first resistor R1, a third grounded capacitor C3, and a fourth grounded capacitor C4, where the first resistor R1 is connected in series with the first capacitor C1 and then connected to the on-board antenna 310, and the third grounded capacitor C3 and the fourth grounded capacitor C4 are respectively electrically connected to two ends of the first resistor R1; the second filter circuit 323 includes a second resistor R2, a fifth ground capacitor C5 and a sixth ground capacitor C6, the second resistor R2 is connected in series with the second capacitor C2 and then connected to the second elastic piece 312, and the fifth ground capacitor C5 and the sixth ground capacitor C6 are electrically connected to two ends of the second resistor R2, respectively.
Specifically, the second control circuit board 30 is further provided with a power interface 211, a second power module 216, an HDMI output interface 212, and a second central processing unit module 213, the second power module 216, the HDMI output interface 212, and the second WiFi module 214 are all connected to the second central processing unit module 213, the power interface 211 is connected to the second central processing unit module 213 through the second power module 216, the power interface 211 and the HDMI output interface 212 are connected to the display device 200 through a power connection line 40 and an HDMI data line, respectively, so that the display device 200 provides a working power supply for the receiver 210 through the power connection line 40, and the data information decoded by the receiver 210 is transmitted to the display device 200 through the HDMI data line for display and play. The second central processor module 213 may be configured to perform a decoding operation on the encoded signal stream received by the second WiFi module 214, so as to obtain data information to be projected onto the screen, and then control the HDMI output interface 212 to transmit the data information to the display device 200. Preferably, the power interface 211 can adopt a Type-C interface, and the power interface 211 only plays a role of power connection, and the power connection line 40 can adopt a USB-to-Type-C power supply line, which can use fewer wires compared with a fully functional Type-C connection line. The second control circuit board 30 may further include a second memory module 217 and a receiving indicator light module 215, both the second memory module 217 and the receiving indicator light module 215 are connected to the second central processing unit module 213, the receiving indicator light module 215 includes an indicator light for indicating an electric quantity and a working state of the receiver 210, and the second memory module 217 may be configured to store control instructions for controlling different modules of the receiver 210. The second power module 216 may be connected to the second memory module 217, the second WiFi module 214, and the receiving light module 215 to provide operating power for the second memory module 217, the second WiFi module 214, and the receiving light module 215.
Specifically, the second control circuit board 30 is covered with a shielding cover 313, the shielding cover 313 is fixed on the second control circuit board 30 through a plurality of shielding cover clips 315, wherein the shielding cover 313 can be fixed by arranging the shielding cover clips 315 so as to be convenient for disassembling and assembling the shielding cover 313. Preferably, the number of the shield clips 315 is four, and the shield clips 315 are respectively located on the peripheral edges of the shield 313, and the shield clips 315 are respectively connected to the shield 313 and the second control circuit board 30 through epoxy glue. The shielding cover clamp 315 is connected with the shielding cover 313 and the second control circuit board 30 through epoxy glue respectively so as to fix the connection between the shielding cover 313 and the second control circuit board 30, the fixing strength is improved, the shielding cover clamp 315 can be arranged in the middle of the edge of the shielding cover 313, the problem that the shielding cover clamp 315 is not convenient to maintain when being directly welded on the second control circuit board 30 is solved, and the connection is stable and reliable.
Specifically, the receiver 210 further includes a heat sink 314, the heat sink 314 is attached to the shield cover 313 by VHB double-sided adhesive, and the shield cover 313 is located between the second control circuit board 30 and the heat sink 314. By providing the heat sink 314 for better heat dissipation of the second control circuit board 30, the heat sink 314 is adhered by a VHB double-sided tape so that the heat sink 314 is firmly connected to the shield cover 313.
Specifically, a metal heat sink is disposed on the shell wall of the receiver 210, a double-sided conductive foam 50 is disposed on the outer wall of the power interface 211, and the double-sided conductive foam 50 is respectively in contact connection with the outer wall of the power interface 211 and the metal heat sink, so that the ground end of the second control circuit board 30 is in contact with the metal heat sink on the shell wall of the receiver 210, the ground end of the second control circuit board 30 is enlarged, the problem of mutual radiation influence between two antennas due to the small size of the receiver 210 is avoided, and abnormal driving and loading of the second WiFi module 214 is prevented. Wherein, the double-sided conductive foam 50 is of a sheet structure, the length can be 6mm, the width can be 3mm, the height can be 3mm, and the error range is 0.2mm. The two surfaces of the double-sided conductive foam 50 can be respectively connected with the outer wall of the power interface 211 and the metal radiating fin through 3M glue in a contact manner.
Specifically, the first control circuit board is further provided with a connection port 111, a first power module 117, a signal conversion IC112 and a first central processing unit module 113, the signal conversion IC112 and the first power module 117 are respectively connected to the connection port 111 and the first central processing unit module 113, the first central processing unit module 113 is connected to the first WiFi module 114, the connection port 111 is connected to the screen projection device 100 through a data line 60, so that the screen projection device 100 supplies power to the transmitter 110 through the connection port 111, and the transmitter 110 projects the data information, which needs to be projected and is transmitted by the screen projection device 100 through the data line 60, after being encoded. The signal conversion IC112 is configured to convert data information, which is received by the connection port 111 and is embodied by a DP signal, transmitted by the screen projection apparatus 100 into an MIPI signal, so that the first central processor module 113 performs processing. Connection port 111 can adopt the Type-C interface, and connection port 111 plays the effect that the data information transmission was played again about signal transmission promptly. The first central processing unit module 113 may be configured to encode data information that is received by the connection port 111 and needs to be projected on a screen, and control the first WiFi module 114 to wirelessly transmit an encoded signal stream. The first control circuit board may further include a first memory module 118 and a transmitting indicator light module 115, both the first memory module 118 and the transmitting indicator light module 115 are connected to the first central processing unit module 113, the transmitting indicator light module 115 includes an indicator light and may be used to indicate a working state of the transmitter 110, and the first memory module 118 may be used to store control instructions for controlling different modules of the transmitter 110. The transmitter 110 further includes a key 116, and the key 116 is connected to the first cpu module 113 through a first power module 117, so that the key 116 can control the on/off of the transmitter 110 and start/stop of the screen-projecting operation. The first power module 117 may be connected to the first memory module 118, the first WiFi module 114 and the emission indicator module 115 to provide operating power for the first memory module 118, the first WiFi module 114 and the emission indicator module 115.
Based on the design, when the screen projection device works, the receiver is connected with the display device through the HDMI data line and the power supply connecting line, at the moment, the display device can display an interactive interface for a user to confirm whether screen projection is carried out or not, and display the subsequent indication flow steps of the transmitter, so that the user can directly operate the transmitter through the corresponding indication flow steps to carry out screen projection preparation work; the method comprises the steps that a transmitter is connected with screen projection equipment through a data line, and after the key of the transmitter is pressed for a long time, an indicator light of the transmitter flickers to indicate that the transmitter enters a pairing state; when the pairing is successful, the indicator lamp of the transmitter is normally on, the transmitter is automatically in wireless communication connection with the receiver, when the wireless communication connection is successful, the indicator lamp of the receiver is turned on, and the display equipment displays an interface for indicating the success of the wireless communication connection; the user clicks the transmitter's button to perform the screen-in operation, and clicking the transmitter's button again cancels the screen-in operation.
To sum up, the utility model relates to a wireless screen device of throwing through set up mutual wireless communication's first wiFi module and second wiFi module respectively at transmitter and receiver in order to realize pairing of transmitter and receiver, realize plug-and-play, so that the transmitter will be received throw video data transmission to the receiver after-display device of throwing the screen of needs of screen equipment and show, moreover, second wiFi module is through setting up the wiFi chip and including the antenna module of board-mounted antenna and external FPC antenna, in order to realize two receipts double-shot, thereby promote transmission efficiency and promote transmission quality, the wiFi chip links to each other with board-mounted antenna and the second shell fragment that is used for being connected with external FPC antenna through first filter circuit and second filter circuit respectively, but the filtering clutter, improve the whole benefit of antenna.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A wireless screen projection device, comprising:
the transmitter is connected with the screen projection equipment and comprises a first control circuit board, and a first WiFi module is arranged on the first control circuit board;
the receiver is connected with display device, including second control circuit board and second wiFi module, the second wiFi module with first wiFi module wireless communication, the second wiFi module includes wiFi chip and antenna module, the antenna module includes board-mounted antenna, board-mounted antenna reaches the wiFi chip all locates on the second control circuit board, the antenna module still includes external FPC antenna, external FPC antenna is located on the conch wall of receiver, be equipped with on the second control circuit board be used for with first shell fragment and second shell fragment that external FPC antenna electricity is connected, the wiFi chip respectively through first filter circuit and second filter circuit with board-mounted antenna reaches the second shell fragment links to each other.
2. The wireless screen projection device of claim 1, wherein a first antenna end of the WiFi chip is connected to the on-board antenna through the first filter circuit after passing through a first capacitor, a second antenna end of the WiFi chip is connected to the second elastic piece through the second filter circuit after passing through a second capacitor, and the first elastic piece is grounded.
3. The wireless screen projection device according to claim 2, wherein the first filter circuit comprises a first resistor, a third grounded capacitor and a fourth grounded capacitor, the first resistor is connected with the first capacitor in series and then connected with the on-board antenna, and the third grounded capacitor and the fourth grounded capacitor are respectively and electrically connected with two ends of the first resistor; the second filter circuit comprises a second resistor, a fifth grounding capacitor and a sixth grounding capacitor, the second resistor is connected with the second capacitor in series and then connected with the second elastic sheet, and the fifth grounding capacitor and the sixth grounding capacitor are electrically connected to two ends of the second resistor respectively.
4. The wireless screen projection device according to claim 1, wherein the second control circuit board is further provided with a power supply interface, a second power supply module, an HDMI output interface and a second CPU module, the second power supply module, the HDMI output interface and the second WiFi module are all connected with the second CPU module, the power supply interface is connected with the second CPU module through the second power supply module, and the power supply interface and the HDMI output interface are respectively connected with the display device through a power supply connecting line and an HDMI data line.
5. The wireless screen projection device as claimed in claim 4, wherein the second control circuit board is covered with a shield, and the shield is fixed on the second control circuit board by a plurality of shield clips.
6. The wireless screen projection device of claim 5, wherein the number of the shield clips is four, the shield clips are respectively located on the peripheral edges of the shield, and the shield clips are respectively connected with the shield and the second control circuit board through epoxy glue.
7. The wireless screen projection device of claim 5, wherein the receiver further comprises a heat sink that is attached to the shield by a VHB double sided adhesive, the shield being positioned between the second control circuit board and the heat sink.
8. The wireless screen projection device according to claim 4, wherein a metal heat sink is disposed on a wall of the receiver, and a double-sided conductive foam is disposed on an outer wall of the power interface, and the double-sided conductive foam is in contact connection with the outer wall of the power interface and the metal heat sink respectively.
9. The wireless screen projection device of claim 4, wherein the power interface is a Type-C interface.
10. The wireless screen projection device according to claim 1, wherein the first control circuit board is further provided with a connection port, a first power module, a signal conversion IC and a first central processing unit module, the signal conversion IC and the first power module are respectively connected with the connection port and the first central processing unit module, the first central processing unit module is connected with the first WiFi module, and the connection port is connected with the screen projection device through a data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161084.6U CN218888593U (en) | 2022-11-28 | 2022-11-28 | Wireless screen projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223161084.6U CN218888593U (en) | 2022-11-28 | 2022-11-28 | Wireless screen projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218888593U true CN218888593U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223161084.6U Active CN218888593U (en) | 2022-11-28 | 2022-11-28 | Wireless screen projection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218888593U (en) |
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- 2022-11-28 CN CN202223161084.6U patent/CN218888593U/en active Active
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