Abstract: An aircraft lamp includes a light source unit, a lamp housing that houses the light source unit, and a power supply control unit that has a casing and includes a control circuit structure configured to control light emission of the light source unit. The control circuit structure is housed in the casing. The casing is disposed outside the lamp housing.

Abstract: A wall lamp (1) is fixed to both an airframe (2) of an aircraft and a wall surface sheet (3) covering the airframe (2). The wall lamp (1) includes a light source (30), a light source holder (50) that is attached to the wall surface sheet (3) and holds the light source (30), and an attachment portion (60) that is attached to the light source holder (50) and the airframe (2). The attachment portion (60) is formed of a material having a melting point lower than that of a material forming the light source holder (50).

Abstract: An aircraft lamp includes a light source unit, a lamp housing that houses the light source unit, and a power supply control unit that has a casing and includes a control circuit structure configured to control light emission of the light source unit. The control circuit structure is housed in the casing. The casing is disposed outside the lamp housing.

Abstract: A wall lamp (1) is fixed to both an airframe (2) of an aircraft and a wall surface sheet (3) covering the airframe (2). The wall lamp (1) includes a light source (30), a light source holder (50) that is attached to the wall surface sheet (3) and holds the light source (30), and an attachment portion (60) that is attached to the light source holder (50) and the airframe (2). The attachment portion (60) is formed of a material having a melting point lower than that of a material forming the light source holder (50).

Abstract: An aircraft lamp includes: a lamp outer case constituted by a lamp housing having an opening and a cover mounted to the lamp housing in a state where the opening is closed, an internal space being formed in the lamp outer case as an arrangement space; a light source including a light emitting diode and arranged on an arrangement surface inclined with respect to a predetermined surface to be irradiated in the arrangement space; and an inner lens arranged in the arrangement space and including a control lens configured to control an irradiation direction of light emitted from the light source. The control lens is formed in a shape having a longitudinal direction and a width direction, and the longitudinal direction and the width direction of the control lens are rotated in a direction around a light source optical axis with respect to a vertical direction and a left-right direction.

Abstract: An aircraft lamp includes: a lamp outer case constituted by a lamp housing having an opening and a cover mounted to the lamp housing in a state where the opening is closed, an internal space being formed in the lamp outer case as an arrangement space; a light source including a light emitting diode and arranged on an arrangement surface inclined with respect to a predetermined surface to be irradiated in the arrangement space; and an inner lens arranged in the arrangement space and including a control lens configured to control an irradiation direction of light emitted from the light source. The control lens is formed in a shape having a longitudinal direction and a width direction, and the longitudinal direction and the width direction of the control lens are rotated in a direction around a light source optical axis with respect to a vertical direction and a left-right direction.

Abstract: A tire includes a tread portion being provided with a circumferentially and continuously extending outboard shoulder main groove, a circumferentially and continuously extending outboard crown main groove disposed between the outboard shoulder main groove and a tire equator, and an outboard middle land portion disposed between the outboard shoulder main groove and the outboard crown main groove. The outboard middle land portion is provided with a plurality of first outboard middle lug grooves extending from the outboard crown main groove and terminating within the outboard middle land portion, and a plurality of second outboard middle lug grooves extending from the outboard shoulder main groove and terminating within the outboard middle land portion, wherein the second outboard middle lug grooves are larger than the first outboard middle lug grooves in length in a tire axial direction.

Abstract: A pneumatic tire comprises a sidewall portion provided in the outer surface with a serrated area defined by radially-extending circumferentially-arranged ridges. The serrated area has circumferentially-arranged groups each including: at least one first ridge being straight over the entire length; and a plurality of second ridges, circumferentially arranged side-by-side, and each provided with an irregular part and otherwise being straight. In each of the ridge groups, the irregular parts of the second ridges are gradually radially shifted so that the irregular parts are arranged along a line inclined with respect to a tire radial direction, and by the irregular parts, an oblique pattern is formed in the ridge group.

Abstract: A tire includes a tread portion being provided with a circumferentially and continuously extending outboard shoulder main groove, a circumferentially and continuously extending outboard crown main groove disposed between the outboard shoulder main groove and a tire equator, and an outboard middle land portion disposed between the outboard shoulder main groove and the outboard crown main groove. The outboard middle land portion is provided with a plurality of first outboard middle lug grooves extending from the outboard crown main groove and terminating within the outboard middle land portion, and a plurality of second outboard middle lug grooves extending from the outboard shoulder main groove and terminating within the outboard middle land portion, wherein the second outboard middle lug grooves are larger than the first outboard middle lug grooves in length in a tire axial direction.

Abstract: A pneumatic tire comprises at least one sidewall portion provided with a serration pattern on its outer surface, the serration pattern comprising a plurality of first groups being repeatedly arranged in the circumferential direction of the tire, each first group comprising a plurality of ridges which are arranged using gradually increasing pitches toward a first circumferential direction of the tire, wherein a region provided with the serration pattern on the outer surface of the sidewall portion has a radius of curvature in a range of not more than 70 mm in a cross section including a tire axis under a standard condition such that the tire is mounted on a standard rim and inflated to a standard pressure, but no tire load is loaded.

Abstract: A pneumatic tire has an asymmetric tread pattern. The width of an outboard shoulder main groove (3) is 3 to 4% of the tread width TW. The width of an inboard shoulder main groove (4) is 5 to 6% of TW. The width of an outboard crown main groove (5) is 6 to 7% of TW. The width of an inboard crown main groove (6) is 6 to 7% of TW. In each of the grooves (4, 5, 6), an outboard groove face's angle ?1 is more than an inboard groove face's angle ?2, wherein ?1 is 13 to 19 degrees, and ?2 is 9 to 14 degrees. In the groove (3), an outboard groove face's angle ?3 is 9 to 14 degrees, and an inboard groove face's angle ?4 is 5 to 8 degrees.

Abstract: A pneumatic tire comprises a sidewall portion provided in the outer surface with a serrated area defined by radially-extending circumferentially-arranged ridges. The serrated area has circumferentially-arranged groups each including: at least one first ridge being straight over the entire length; and a plurality of second ridges, circumferentially arranged side-by-side, and each provided with an irregular part and otherwise being straight. In each of the ridge groups, the irregular parts of the second ridges are gradually radially shifted so that the irregular parts are arranged along a line inclined with respect to a tire radial direction, and by the irregular parts, an oblique pattern is formed in the ridge group.

Abstract: A pneumatic tire comprises at least one sidewall portion provided with a serration pattern on its outer surface, the serration pattern comprising a plurality of first groups being repeatedly arranged in the circumferential direction of the tire, each first group comprising a plurality of ridges which are arranged using gradually increasing pitches toward a first circumferential direction of the tire, wherein a region provided with the serration pattern on the outer surface of the sidewall portion has a radius of curvature in a range of not more than 70 mm in a cross section including a tire axis under a standard condition such that the tire is mounted on a standard rim and inflated to a standard pressure, but no tire load is loaded.

Abstract: A pneumatic tire has a unidirectional tread pattern comprising right-hand and left-hand crown circumferential grooves and a crown rib formed therebetween. The crown rib is provided with first and second V-shaped grooves arranged alternately in the tire circumferential direction. The first V-shaped grooves extend from the left-hand crown circumferential groove. The second V-shaped grooves extend from the right-hand crown circumferential groove. The first and second V-shaped grooves are terminated within the rib, and their V-shape configurations have bending points substantially positioned at the tire equator.

Abstract: An aircraft lamp includes a housing capable of being attached to a body of an aircraft; a discharge lamp; a reflector which reflects visible light from the discharge lamp; a light transmissive cover which transmits reflected light from the reflector to a front side of the housing; a lamp socket connected electrically to the discharge lamp and an igniter which activates the discharge lamp; and a high-voltage electrical power line that electrically connects the lamp socket with the igniter. The discharge lamp, the reflector, the light transmissive cover, the lamp socket, and the igniter are provided within the housing. A heat insulating air layer is provided between the lamp socket and the igniter. The high-voltage electrical power line is provided so as to pass through the heat insulating air layer.

Abstract: A pneumatic tire capable of improving drainage performance and noise-reduction. The pneumatic tire comprises a tread portion being provided with central longitudinal grooves 3a, shoulder longitudinal grooves 3b, and intermediate land portions 4a each defined between the central longitudinal groove 3a and said shoulder longitudinal groove 3b. The intermediate land portion 4a is provided with a thin groove 5 extending the tire at a position away axially inside from the shoulder longitudinal groove 3b, intermediate slant grooves 6 each extending from the thin groove 5 toward said central longitudinal groove 3a while inclining terminating without being connected to the central longitudinal groove 3a, and connection grooves 7 each extending so as to connect between the adjacent intermediate slant grooves 6 in the circumferential direction of the tire. Each of the connection groove 7 inclines in the same direction as the intermediate slant groove 6 at an angle smaller than that of the intermediate slant groove 6.