In one embodiment, a protective helmet for disaster situation includes a rigid outer shell and an electronic system integrated into the helmet that includes an electronic location system configured to transmit electromagnetic signals that can be used to locate the wearer of the helmet.

Exemplary noise reducing methods and systems are configured to acoustically reproduce two electrical noise reducing signals at two opposing positions in a helmet; to pick up sound at positions in the vicinity of the positions where the noise reducing signals are reproduced; and to generate the two noise reducing signals from error-signals and reference-signals. For each noise reducing signal, the corresponding error-signal is generated from the sound picked-up at the same position where the respective noise reducing signal is reproduced; and the reference-signal is generated from the sound picked-up at the position where the respective other noise reducing signal is reproduced.

The present invention relates to an intelligent safety helmet with front play of rearview consisting of the helmet body and several ventilation holes designed on it. The helmet body is set in the back with a rearview camera electrically connected with the intelligent hardware set in its front. The intelligent hardware consists of a removable main bracket installed on one side of the helmet body, and the main bracket is installed with an optoelectronic device and a front-facing camera in the front via a rocker arm module, so that the user can use the front-facing camera to take pictures and store them in the memory or activate the rearview camera and project the image onto the optoelectronic device for view of rear conditions by the user. The user can use a transmissive optical module set in front of the eyes to play the pictures taken by the back-facing camera.

A protective helmet has a shell, a liner, and a control device that includes a receiver. A recess is formed in an outer surface of the liner adjacent a rear edge of the shell, to receive the control device. A battery operably connected with the control device, and side recesses formed in the outer surface of the liner adjacent the side edges of the shell contain speakers electronically connected to the control device. The control device streams music from the portable electronic device to the speakers.

A helmet for a rider of an on-road or off-road vehicle protects the rider's head. The helmet also may include various features for enhancing the riding experience. For example, the helmet may include electrical connections for power various features of the helmet. The helmet may include a shell defining a front opening, an interior surface, and an exterior surface. An electronics housing may be detachably attached to the exterior surface at a rear portion of the helmet shell opposite the front opening, the electronics housing including electronic components that are configured to power and/or control one or more components of the helmet.

A protective helmet has a shell, a liner, and a control device that includes a receiver. A recess is formed in an outer surface of the liner adjacent a rear edge of the shell, to receive the control device. A battery operably connected with the control device, and side recesses formed in the outer surface of the liner adjacent the side edges of the shell contain speakers electronically connected to the control device. The control device streams music from the portable electronic device to the speakers.

A helmet for a rider of an on-road or off-road vehicle protects the rider's head. The helmet also may include various features for enhancing the riding experience. For example, the helmet may include electrical connections for power various features of the helmet. Additionally, the helmet may include earmuffs which reduce road or other noises during operation of the vehicle.