Abstract: A luminaire may include a luminaire main body, an attachment plate, a plurality of light-emitting modules, a plurality of lenses, and a lighting circuit. In some examples, the luminaire main body may include an opening in a lower surface. The attachment plate may have a flat plate shape and may be arranged in the luminaire main body, and a lower surface faces the opening. The plurality of light-emitting modules may include semiconductor light-emitting elements, and may be attached to the lower surface of the attachment plate. The plurality of lenses may be provided for the respective light-emitting modules, and control luminous intensity distribution of light from the light-emitting modules. The lighting circuit may be arranged above the attachment plate in the luminaire main body, and configured to light the light-emitting modules.

Abstract: A luminaire (11) includes a luminaire main body (21), an attachment plate (23), a plurality of light emitting modules (24), a plurality of lenses (25), and a lighting circuit (26). The luminaire main body (21) includes an opening (34) in a lower surface. The attachment plate (23) has a flat plate shape and is arranged in the luminaire main body (21), and a lower surface faces the opening (34). The plurality of light-emitting modules (24) include semiconductor light-emitting elements, and are attached to the lower surface of the attachment plate (23). The plurality of lenses (25) are provided for the respective light-emitting modules (24), and control luminous intensity distribution of light from the light-emitting modules (24). The lighting circuit (26) is arranged above the attachment plate (23) in the luminaire main body (21), and lights the light-emitting modules (24).

Abstract: An automatic towing vehicle includes a self-moving vehicle body for moving along a traveling path, an engaging member, a pressing member and an elevating device for moving up and down the pressing member relative to the vehicle body. The vehicle body is movable under a truck body of the truck. The engaging member is mounted on the vehicle body and engageable with the truck body. The pressing member is mounted on the vehicle body and movable up for pressing the truck body upward. When the pressing member is located under the truck body and moved up by the elevating device, the pressing member is brought to contact with the truck body to press upward. The truck is towed while the pressing member presses against the truck body.

Abstract: The invention provides a high-pressure discharge lamp incorporating an outer envelope storing a pair of electric terminals a plurality of arc tubes which are respectively stored in this outer envelope and electrically connected in parallel, and a plurality of ignition aids available for assisting operating of these arc tubes, where these ignition aids are provided for each of these arc tubes and contain potentials different from each other. In addition, the invention also provides a lighting system for operating the high-pressure discharge lamp.