Abstract: A headset includes: a housing provided at one end portion of a headband; a boom main body attached to the housing; and an ear pad attached to the housing on a side opposite to the boom main body. The ear pad includes a cup portion configured to cover an entire auricle of a wearer when the entire auricle is inserted into an inner diameter portion of the cup portion. In the cup portion, a plurality of through holes allowing the inner diameter portion to be open to an outside are formed closer to the housing than a cup opening of the inner diameter portion.

Abstract: A headset includes: a housing provided at one end portion of a headband; a boom main body attached to the housing; and an ear pad attached to the housing on a side opposite to the boom main body. The ear pad includes a cup portion configured to cover an entire auricle of a wearer when the entire auricle is inserted into an inner diameter portion of the cap portion. In the cup portion, a plurality of through holes allowing the inner diameter portion to be open to an outside are formed closer to the housing than a cup opening of the inner diameter portion.

Abstract: A turbocharger including a compressor housing, a flange, an air bypass valve and a seal. The compressor housing has an impeller housing, an upstream passage positioned upstream of the impeller housing and a downstream passage positioned downstream of the impeller housing. The flange is coupled to the compressor housing and has a bypass passage connected to the downstream passage of the compressor housing and the upstream passage of the compressor housing. A groove is formed at a surface of the flange opposing the compressor housing and the seal is fitted into the groove. Therefore, a tight seal of the flange and the compressor housing can be ensured by the seal. Further, the air bypass valve is coupled only to the flange. Therefore, a tight seal of the turbocharger can be ensured easier than in a case where the air bypass valve is coupled over the flange and the compressor housing.

Abstract: A turbocharger including a compressor housing, a flange, an air bypass valve and a seal. The compressor housing has an impeller housing, an upstream passage positioned upstream of the impeller housing and a downstream passage positioned downstream of the impeller housing. The flange is coupled to the compressor housing and has a bypass passage connected to the downstream passage of the compressor housing and the upstream passage of the compressor housing. A groove is formed at a surface of the flange opposing the compressor housing and the seal is fitted into the groove. Therefore, a tight seal of the flange and the compressor housing can be ensured by the seal. Further, the air bypass valve is coupled only to the flange. Therefore, a tight seal of the turbocharger can be ensured easier than in a case where the air bypass valve is coupled over the flange and the compressor housing.

Abstract: A headset includes a housing provided at one end of a headband, an ear pad attached to the housing, a boom main body attached to the housing on a side opposite to the ear pad, an arm portion provided in the boom main body and protruding to a side opposite to one end of the headband with the housing interposed between the headband and the arm portion, a first microphone provided at a protruding tip of the arm portion, and a second microphone provided on the arm portion, and disposed on a substantially straight line passing through a mouth of a user and the first microphone and on a side opposite to the mouth of the user with the first microphone interposed between the mouth and the second microphone.

Abstract: A headset includes a housing provided at one end of a headband, an ear pad attached to the housing, a boom main body attached to the housing on a side opposite to the ear pad, an arm portion provided in the boom main body and protruding to a side opposite to one end of the headband with the housing interposed between the headband and the arm portion, a first microphone provided at a protruding tip of the arm portion, and a second microphone provided on the arm portion, and disposed on a substantially straight line passing through a mouth of a user and the first microphone and on a side opposite to the mouth of the user with the first microphone interposed between the mouth and the second microphone.

Abstract: An intake apparatus includes an intake pipe, a resonator and a blowby gas recirculation pipe. The resonator includes a volume portion having a volume chamber therein and a connecting pipe connecting the volume portion and the intake pipe and having a connecting passage connecting the volume chambera and the intake passage. The blowby gas recirculation pipe includes an internal passage therein. The blowby gas recirculation pipe is connected to an axially midway portion of the connecting pipe, and an exit of the internal passage is connected to the connecting passage of the connecting pipe.

Abstract: An intake apparatus includes an intake pipe, a resonator and a blowby gas recirculation pipe. The resonator includes a volume portion having a volume chamber therein and a connecting pipe connecting the volume portion and the intake pipe and having a connecting passage connecting the volume chambera and the intake passage. The blowby gas recirculation pipe includes an internal passage therein. The blowby gas recirculation pipe is connected to an axially midway portion of the connecting pipe, and an exit of the internal passage is connected to the connecting passage of the connecting pipe.

Abstract: An antenna substrate (13) and a waveguide substrate (11) are housed in a main unit case (3). The waveguide substrate (11) is fixed to an attachment part (9) in the main unit case (3). The antenna substrate (13) is disposed adjacent to the waveguide substrate (11) in a standing position on the attachment part (9). The waveguide substrate (11) has an insert (33) on an edge (31) thereof. The antenna substrate (13) has a slit (37) aligned with the edge (31) of the waveguide substrate (11). The insert (33) is inserted into the slit (37), thereby restricting the movement of the antenna substrate (13). The antenna substrate (13) and the waveguide substrate (11) can be coupled to each other without using a metal plate bracket and integrally assembled to the main unit case (3). Therefore, the antenna performance is improved.

Abstract: An antenna substrate (13) and a waveguide substrate (11) are housed in a main unit case (3). The waveguide substrate (11) is fixed to an attachment part (9) in the main unit case (3). The antenna substrate (13) is disposed adjacent to the waveguide substrate (11) in a standing position on the attachment part (9). The waveguide substrate (11) has an insert (33) on an edge (31) thereof. The antenna substrate (13) has a slit (37) aligned with the edge (31) of the waveguide substrate (11). The insert (33) is inserted into the slit (37), thereby restricting the movement of the antenna substrate (13). The antenna substrate (13) and the waveguide substrate (11) can be coupled to each other without using a metal plate bracket and integrally assembled to the main unit case (3). Therefore, the antenna performance is improved.

Abstract: An all-in-one headset worn on the user's head, comprises a head band, a first housing arranged at the head band, a communication unit having selectable at least two communication channels and selectable at least two communication modes, an operating panel mounted on the outside wall of the first housing for selecting one communication channel and one communication mode, an ear-speaker mounted on the inside wall of the first housing, a microphone, a second housing for housing the microphone, a boom member for supporting the second housing to the first housing, an indicating unit for indicating the indication indicative of the selected communication channel and the selected communication mode.

Abstract: An all-in-one headset worn on the user's head, comprises a head band, a first housing arranged at the head band, a communication unit having selectable at least two communication channels and selectable at least two communication modes, an operating panel mounted on the outside wall of the first housing for selecting one communication channel and one communication mode, an ear-speaker mounted on the inside wall of the first housing, a microphone, a second housing for housing the microphone, a boom member for supporting the second housing to the first housing, an indicating unit for indicating the indication indicative of the selected communication channel and the selected communication mode.