A vehicle-mounted FM transmitter

Abstract

This utility model relates to the field of in-vehicle audio equipment technology and discloses an in-vehicle FM transmitter, including a transmitter body, a power supply module, an audio input module, a signal processing module, a signal transceiver module, and a control module. The power supply module includes an in-vehicle power supply connector located at the rear end of the transmitter body. The connector has a connector spring and connector contacts, which are adapted to the car cigarette lighter interface. The in-vehicle power supply is achieved through elastic contact and conductivity, thus powering the device. This utility model adapts to the car cigarette lighter interface through the in-vehicle power supply connector. The connector spring provides elastic contact, and the connector contacts are conductive, eliminating the need for an external power source. It is convenient to connect, provides stable and reliable power supply, meets the needs of in-vehicle use scenarios, has strong audio compatibility, and the first and second audio interfaces are compatible with different types of audio devices, broadening the audio access channels. Indicator lights intuitively display the connection and working status, improving ease of use.

Description

Technical Field

[0001] This utility model relates to the field of vehicle audio equipment technology, specifically a vehicle FM transmitter. Background Technology

[0002] With the increasing popularity of cars and the growing demand for in-car audio experiences, playing audio content from devices such as mobile phones and MP3 players while driving is becoming more and more common.

[0003] Traditional direct connection via the car's AUX interface has drawbacks, such as the lack of an AUX interface in some models and inconvenient cable connections. While in-car FM transmitters can wirelessly transmit audio signals, overcoming the limitations of wired connections, existing products suffer from unstable signal transmission, poor heat dissipation, limited interface compatibility, and inconvenient operation, failing to meet users' demands for sound quality and ease of use. Therefore, an optimized in-car FM transmitter design is needed. Utility Model Content

[0004] (a) Technical problems to be solved.

[0005] To address the shortcomings of existing technologies, this utility model provides a vehicle-mounted FM transmitter, which solves the problems mentioned in the background art.

[0006] (ii) Technical solution.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted FM transmitter, comprising a transmitter body, and equipped with a power supply module, an audio input module, a signal processing module, a signal transceiver module, and a control module. The specific structure and connection of each module are as follows: The power supply module includes a vehicle power supply connector located at the rear of the transmitter body. The connector is equipped with a connector spring and connector contacts, which are compatible with the car cigarette lighter interface. It enables vehicle power access through elastic contact and conductivity to supply power to the device.

[0008] The audio input module consists of an interface panel located at the front of the transmitter body. The front of the panel has a first audio interface, a second audio interface, and indicator lights. Different interfaces are compatible with various audio devices, and the indicator lights show the connection and working status.

[0009] The signal processing module includes a signal processor located at the top of the transmitter body. Multiple horizontally spaced heat dissipation fins are provided on the outside of the fins. Heat dissipation and airflow guiding holes are opened between the two side walls of the fins. The fins and airflow guiding holes work together to accelerate heat dissipation and ensure stable operation.

[0010] The signal transceiver module has a transceiver located on one side of the transmitter body. One side of the transceiver is connected to a U-shaped FM transceiver antenna and a Bluetooth antenna with a symmetrical dual-antenna structure, enabling the transmission of FM frequency modulation signals and the transmission and reception of Bluetooth audio signals.

[0011] The control module includes a controller located on the other side of the transmitter body. The controller has control buttons at the front end and is electrically connected to other modules. It receives button commands to adjust the working modes and parameters of each module.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the vehicle power supply connector is adapted to the car cigarette lighter interface. The connector spring contacts are elastic and the connector contacts are conductive. No additional power supply is required, the connection is convenient, the power supply is stable and reliable, and it meets the needs of vehicle use scenarios. It has strong audio compatibility. The first audio interface and the second audio interface are adapted to different types of audio devices, which broadens the audio access channels. The indicator light intuitively displays the connection and working status, which improves the convenience of use.

[0013] 2. In this utility model, multiple horizontally equidistant heat dissipation fins on the outside of the signal processor, combined with heat dissipation guide holes, increase the heat dissipation area, accelerate air circulation, effectively dissipate the heat of the processor, ensure stable operation of the module, and extend the service life of the equipment. In addition, the signal transmission and reception are flexible, the U-shaped FM transceiver antenna ensures stable transmission of FM frequency modulation signals, and the dual-antenna structure Bluetooth antenna enhances the Bluetooth audio signal transmission and reception capabilities, meeting different audio transmission needs and adapting to various reception methods of car radios. Attached Figure Description

[0014] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ; Figure 2 The overall three-dimensional structure of this utility model Figure 2 ; Figure 3 The overall three-dimensional structure of this utility model Figure 3 .

[0015] In the diagram: 1. Transmitter body; 2. Power supply module; 3. Audio input module; 4. Signal processing module; 5. Signal transceiver module; 6. Control module; 21. Vehicle power connector; 22. Connector spring; 23. Connector contact; 31. Interface panel; 32. First audio interface; 33. Second audio interface; 34. Indicator light; 41. Signal processor; 42. Heat sink; 43. Heat dissipation vent; 51. Signal transceiver; 52. FM transceiver antenna; 53. Bluetooth antenna; 61. Controller; 62. Control button. Detailed Implementation

[0016] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0017] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figures 1-3 In this embodiment of the present invention, a vehicle-mounted FM transmitter includes a transmitter body 1, and is equipped with a power supply module 2, an audio input module 3, a signal processing module 4, a signal transceiver module 5, and a control module 6. The specific structure and connection of each module are as follows: The power supply module 2 includes a vehicle power supply connector 21 located at the rear end of the transmitter body 1. The connector is equipped with a connector spring 22 and a connector contact 23, which is adapted to the car cigarette lighter interface. It enables vehicle power access through elastic contact and conductivity to power the device.

[0020] The audio input module 3 consists of an interface panel 31 located at the front end of the transmitter body 1. The front end of the panel has a first audio interface 32, a second audio interface 33, and an indicator light 34. Different interfaces are compatible with various audio devices, and the indicator light shows the connection and working status.

[0021] The signal processing module 4 includes a signal processor 41 located at the top of the transmitter body 1. Multiple horizontally spaced heat dissipation fins 42 are provided on its outer side. Heat dissipation guide holes 43 are opened between the two side walls of the fins. The fins and guide holes work together to accelerate heat dissipation and ensure stable operation.

[0022] Among them, the signal transceiver module 5 has a signal transceiver 51 located on one side of the transmitter body 1, and one side of the transceiver is connected to a U-shaped FM transceiver antenna 52 and a Bluetooth antenna 53 with a front and rear symmetrical dual antenna structure, so as to realize the transmission of FM frequency modulation signals and the transmission and reception of Bluetooth audio signals.

[0023] The control module 6 includes a controller 61 located on the other side of the transmitter body 1. The controller has a control button 62 at its front end, which is electrically connected to other modules and receives button commands to adjust the working mode and parameters of each module.

[0024] The working principle of this utility model is as follows: The vehicle power connector 21 is inserted into the car cigarette lighter socket. The connector spring 22 deforms elastically, and the connector contact 23 makes contact and conducts electricity, powering on the device. The indicator light 34 illuminates to show the power-on status. Depending on the audio device interface type, the first audio interface 32 or the second audio interface 33 is selected. A mobile phone, MP3 player, or other device is connected via the corresponding cable. The indicator light 34 indicates a successful interface connection, and the audio signal is transmitted to the device. The signal processor 41 receives the audio signal and performs decoding, amplification, and other processing. During operation, heat is conducted through the heat dissipation fins 42, and air is introduced through the heat dissipation vents 43 to accelerate heat dissipation. After processing, the signal is transmitted to the signal transceiver 51, which transmits FM signals via the U-shaped FM transceiver antenna 52, or transmits and receives Bluetooth audio signals via the Bluetooth antenna 53. The car radio is tuned to the corresponding FM frequency or Bluetooth reception is enabled to play audio. Pressing the control button 62 activates the controller 61, which receives the command and can adjust the power output of the power supply module 2 (e.g., low-power mode), switch the interface of the audio input module 3, adjust the sound effect parameters of the signal processing module 4, and change the working mode (FM) of the signal transceiver module 5. Options such as Bluetooth priority can be used to meet different usage needs.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vehicle-mounted FM transmitter, comprising a transmitter body (1), wherein the transmitter body (1) is equipped with a power supply module (2), an audio input module (3), a signal processing module (4), a signal transceiver module (5), and a control module (6); characterized in that The power supply module (2) includes a vehicle power supply connector (21) located at the rear end of the transmitter body (1). The vehicle power supply connector (21) is provided with a connector spring (22) and a connector contact (23). The audio input module (3) includes an interface panel (31) located at the front end of the transmitter body (1). The front end of the interface panel (31) is provided with a first audio interface (32), a second audio interface (33), and an indicator light (34). The signal processing module (4) includes a signal processor (41) disposed at the top of the transmitter body (1). The signal processor (41) is provided with heat dissipation fins (42) on the outside, and heat dissipation guide holes (43) are opened between the two side walls of the heat dissipation fins (42). The signal transceiver module (5) includes a signal transceiver (51) disposed on one side of the transmitter body (1), and an FM transceiver antenna (52) and a Bluetooth antenna (53) are connected to one side of the signal transceiver (51).

2. The FM transmitter of claim 1, wherein: The vehicle power supply connector (21) is adapted to the car cigarette lighter interface, and the connector spring (22) and connector contact (23) are adapted to the internal contact of the car cigarette lighter interface.

3. The FM transmitter of claim 1, wherein: The first audio interface (32) and the second audio interface (33) are adapted to different types of audio devices, and the indicator light (34) is an LED light.

4. The FM transmitter of claim 1, wherein: The heat dissipation fins (42) are multiple pieces arranged horizontally at equal intervals, and heat dissipation guide holes (43) are opened between the two side walls of the heat dissipation fins (42).

5. The FM transmitter of claim 1, wherein: The FM transceiver antenna (52) is a U-shaped antenna, and the Bluetooth antenna (53) is a dual-antenna structure arranged symmetrically front and back.

6. The FM transmitter of claim 1, wherein: The control module (6) includes a controller (61) located on the other side of the transmitter body (1), and a control button (62) is provided at the front end of the controller (61).

7. A vehicle-mounted FM transmitter according to claim 6, characterized in that: The controller (61) is electrically connected to the power supply module (2), audio input module (3), signal processing module (4), and signal transceiver module (5).

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