4results about How to "Improve communication effect" patented technology

The utility model relates to bluetooth sound box technical field discloses an anti -skidding outdoor bluetooth sound box, including the shell, the shell outer wall both sides are provided with anti -skid subassembly, the shell inner wall is provided with quick detachable subassembly, the anti -skid subassembly includes two fixed end plate, two fixed end plate fixed connection in the shell outer wall both sides respectively, two fixed end plate outer walls all rotatoryly connected with telescopic link, two telescopic link outer wall one side all rotatoryly connected with linkage connecting rod, two linkage connecting rod one end all rotatoryly connected with connecting rod pivot, in the utility model, anti -skid subassembly provides stable support guarantee for outdoor use through ingenious mechanical linkage design, realizes three gear angle adjustment and locking, can adapt to different outdoor topography, such as slope, grassland complex environment, lets the sound box place more stable, collocation antiskid pad increases friction, effectively avoids the sound box to slide, to fall damage because of external force, guarantees the sound box stable sound production under the outdoor scene.

This utility model discloses a novel emergency alarm device, comprising a housing, a trigger module, a transmission module, an alarm module, and a power supply module. The housing has a trigger hole at its top and a mounting slot at its bottom. The trigger module is located at the top of the housing, and the transmission module is connected to it. A stationary contact is fixed to the bottom of the housing, and a moving contact is mounted on the bottom of a linkage slider. The alarm module includes a striking hammer, a metal bell, and a sound-emitting cavity. One end of the striking hammer is connected to the linkage slider via a rotating shaft, and the other end has a rubber hammer head. The power supply module is connected to both the transmission module and the alarm module, achieving dual mechanical and electronic alarm functionality. The device adopts a modular design and has an anti-accidental trigger structure, maintaining the mechanical alarm function even during power outages.

The utility model relates to traffic planning and safety field especially relates to a traffic planning traffic warning device, including base, stand, lighting assembly and display component. The stand is fixed on the base, and the top of stand installs warning light, the lighting assembly and display component are installed in the both sides of top of stand respectively, the lighting assembly includes U type frame and light supplementing lamp, one end of U type frame is fixed in the top of stand, and light supplementing lamp is rotatably connected with U type frame, the display component includes branch arm no. One end of branch arm no. One end is fixed on the stand, and the other end of branch arm no. The other end is rotatably connected with branch arm no. Two, and the other end of branch arm no. Two installs display screen. The utility model discloses rotatable light supplementing lamp, can adjust the light supplementing angle according to actual lighting demand, improves the visibility of early warning information under the night or low light environment, and guarantees traffic safety.

The application discloses a negative pressure head cover capable of preventing droplet transmission and a use method thereof, and belongs to the technical field of medical devices. The negative pressure head cover comprises a sealed head cover, a sealed face cover, and a negative pressure pipe. The sealed head cover is transparent. The sealed face cover is detachably arranged on the outer side of the sealed head cover and is transparent. The negative pressure pipe is arranged on the outer side of a sterilization assembly. The application effectively solves the problem that the exhaled gas cannot be sterilized before being discharged, thereby realizing that the negative pressure pipe can extract the gas in the sealed face cover, input the gas into the inside of the sterilization assembly for sterilization, and then discharge the gas through the exhaust pipe, so that the exhaled gas of the patient can be sterilized before being discharged, the gas in the sealed head cover is prevented from being emitted into the air when the sealed head cover is removed, and the effect of preventing droplet transmission is improved.