The invention discloses a vehicle warning apparatus. The vehicle warning device comprises a shell, a sound production unit and a net cover, the sound production unit is arranged in the shell, the sound production unit comprises a vibrating diaphragm which vibrates along a vibration axis extending front and back, and the vibrating diaphragm is provided with a front face facing the front and a back face facing the back; the mesh cover covers the front surface of the vibrating diaphragm; the mesh enclosure comprises a fixing ring, a grating part and a shielding part, and the fixing ring is connected with the shell; the grating part is located between the fixing ring and the shielding part, the fixing ring surrounds the grating part, the grating part surrounds the shielding part, and the grating part is provided with a plurality of grating holes for air circulation; a middle hole for air circulation is formed in the middle of the shielding part; and a resonant cavity for changing the sound wave direction is formed between the shielding part and the vibrating diaphragm. The vehicle warning device has high intermediate frequency sensitivity.
本发明公开了一种车辆警告装置。该车辆警告装置包括壳体、发声单元及网罩,所述发声单元设置在所述壳体中,所述发声单元包括沿前后延伸的振动轴线振动的振膜,所述振膜具有面向前方的正面和面向后方的背面;所述网罩覆盖所述振膜的正面;所述网罩包括固定环、格栅部及遮挡部,所述固定环和所述壳体相连接;所述格栅部位于所述固定环和所述遮挡部之间,所述固定环环绕所述格栅部,所述格栅部环绕所述遮挡部,所述格栅部具有多个供空气流通的格栅孔;所述遮挡部的中部设有供空气流通的中孔;所述遮挡部和所述振膜之间形成改变声波方向的共振腔。该车辆警告装置具有较高的中频灵敏。
Vehicle warning device
一种车辆警告装置
2024-12-27
Patent
Electronic Resource
Chinese
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
VEHICLE WARNING DEVICE, SERVER DEVICE AND VEHICLE WARNING SYSTEM
European Patent Office | 2015
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