Nitto Boseki Co., Ltd.

Shinta Yamamura

Naoyuki Furuta

Tadanori Mizukami

Takashi Mikami

Kyoji Fujiwara

Kikuo Kazi

Tokio Tan

Yutaka Tazaki

To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.

Sound absorbing body, sound absorbing board, and sound absorbing unit

An outer mounting rail at a side opposite to a sound source side and an inner mounting rail at the sound source side are fixed to a metal securing part secured to an attachment base portion projecting from a top portion of a sound insulation wall. An outer stationary rail fixed to a sound absorbing body is fixed to the outer mounting rail by a joint bar, and an inner stationary rail fixed to the sound absorbing body is fixed to the inner mounting rail.

Structure for mounting sound absorbing member on top portion of sound

Sound absorbing body, sound absorbing plate, and sound absorbing unit

A plate-like body structure for a sound insulation wall having a built-in solar battery constituted by the combination of a built-in solar battery structure having a gentle convex arcuate shape so as to be installed on the top end portion of a sound insulation wall in the form of a head piece, and a built-in solar battery structure having a built-in solar battery plate-like body held by transparent plate-like materials from its opposite sides and inserted into a window-like opening portion or a wall holding frame portion formed in the sound insulation wall.

Plate-like body structure with solar battery for sound insulation wall

Fixing members are mounted, at predetermined intervals, on the top portion of a footing that is built along a road. A concrete-type board having vertical through-holes is mounted on the footing through the fixing member. Steel rods each having top and bottom threaded portions are inserted into the respective through-holes of the board with the bottom threaded portions being threadedly engaged with the respective fixing members. Upper nuts are engaged with the top threaded portions of the respective rods, to thereby fix the board onto the footing.

Sound insulating wall and method of installing the same

A sound absorbing pipe comprising a circumferential wall, open portions disposed at regular intervals in the circumferential wall having a predetermined area ratio and sound absorbing material disposed in a hollow formed in an interior portion of the pipe.

Growing community of inventors

Kanagawa, Japan

Shinta Yamamura