A horn device has a trumpet fixture with one or more internal lights. In one embodiment, the trumpet removably attaches to the valve portion of a canister containing a charge of pressurized gas or air. An actuator button on the top of the trumpet fixture is operable to open the valve assembly of the canister and release the pressurized gas or air through an interior passage of the trumpet fixture, causing a transparent or translucent diaphragm to vibrate, thereby producing a loud horn noise that is directed out of the open bell end of the trumpet. One or more light producing elements, such as electric lamps or LED's, a battery power source and an actuator switch device are housed within a rear chamber of the trumpet fixture. A button on the rear of the trumpet is pushed to control actuation of the light producing elements according to several modes of operation, including flash sequence and steady illumination. The produced light is directed forwardly, out of the open end of the trumpet. In an alternative embodiment, a battery powered electronic horn device is placed in the rear chamber to produce the horn noise. In a further embodiment, the trumpet fixture is transparent or translucent and light is transmitted omnidirectionally.