Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Panasonic Electric Works Co., Ltd.

Junichi Hasegawa

Hiroshi Kido

Shigeru Ido

Akinori Hiramatu

Koji Watanabe

Katsuyoshi Nakada

Daisuke Ueda

Takeshi Kamoi

Daisuke Yamahara

Nobutoshi Matsuzaki

Hirofumi Konishi

Tomoyuki Nakano

Kazuhiro Hatta

Hiroki Kamezaki

Toshiaki Sasaki

Kyota Yamamoto

Nobuyuki Matsui

Takashi Ohta

Tadashi Murakami

Atsushi Motoya

Youji Tachino

Kiyoaki Uchihashi

Shintarou Tanaka

Riho Fukagawa

Junpei Kohara

Makoto Yamada

Yoko Matsubayashi

Kenji Sato

Takeshi Goriki

Akihiro Kishimoto

Jun Kumagai

Shigeo Gotoh

Tadasi Nisimura

Hiroki Noguchi

Masaki Shikanai

Akinori Hiramatsu

Ayako Tsukitani

Takamitsu Suzuki

Kazunori Kouno

Noriyuki Maki

Keita Endo

Kazuki Zusho

Naoki Hoshika

Ryou Wakasa

Suguru Suzuki

Hisaji Ito

Kiyotaka Hirata

Koki Yamamoto

An electronic device includes a first housing including a display unit, and a second housing that includes an input unit and an antenna unit, is rotatably connected to the first housing via a connection part, and is made of a metal material. The first housing includes a support plate that constitutes a back surface of the first housing, supports the display, and is made of a metal material, and a communication path member that is provided on the support plate and is made of a resin material. The communication path member is disposed in a region facing at least a part of the antenna unit of the second housing in a closed state where the first housing and the second housing are disposed to face each other.

Electronic device

An electronic device includes a first housing including a display, a second housing including an operation unit, and a rotation unit that rotates the first housing relative to the second housing. The second housing includes a rotation regulation portion that protrudes from a bottom face of the second housing and regulates rotation of the first housing. The rotation regulation portion includes an elastic member configured to rotate back and forth between a first mode and a second mode with different states of protrusion from a bottom face of the second housing, and contactable with the first housing. The rotation regulation portion, in the first mode, regulate rotation of the first housing in a first rotation range, and in the second mode, regulate rotation of the first housing in a second rotation range where the first housing is rotated to a greater extent than in the first rotation range.

An electronic device includes a housing, a covering member that covers the housing, and an attachment part that detachably attaches the covering member to the housing. The attachment part includes a one-side attachment part and at least one other-side attachment part. The one-side attachment part includes a first projection of the covering member extending from a first member toward a second member, a first accommodation part of the housing that accommodates the first projection, and a first movement restriction part that restricts movement of the first projection. The other-side attachment part includes a protrusion of the covering member extending from a second member toward a third surface of the housing, a second projection extending from the protrusion in a direction away from the first member, a second accommodation part of the housing that accommodates the second projection, and a second movement restriction part that restricts movement of the second projection.

An electronic apparatus includes a flexible printed circuit board having a main body on which wiring pattern is formed, a connector having a connection terminal connected to the wiring constituting the wiring pattern, and a base body on which the connection terminal is fixed, and a casing. The main body is attached to the casing to be movable, the flexible printed circuit board has an extension part protruding from the main body and extending along with a ground included in the wiring pattern, the extension part bends in the middle of extending to be capable of expansion and contraction, and has a mounting part fixed to the casing on the tip side thereof, the mounting part is provided with a ground terminal connected to the ground extended, and the ground terminal is electrically connected to the casing in the state that the mounting part is fixed to the casing.

Electronic apparatus

A cubicle unit includes a first illumination apparatus, a second illumination apparatus, a sensor, and a controller. When a brightness sensed by the sensor is a predetermined brightness or less, the controller causes the second illumination apparatus to emit light having a first color temperature lower than a color temperature of light emitted by the first illumination apparatus. When the brightness sensed by the sensor is greater than the predetermined brightness, the controller causes the second illumination apparatus to emit light having a second color temperature lower than the first color temperature.

Cubicle unit, transportation vehicle, and illumination control method

An illumination system includes: an illumination device; a time setter that sets a target time; and a controller that controls a color temperature of light emitted by the illumination device. The controller determines a target color temperature according to the target time, and causes the color temperature of the light emitted by the illumination device to be the target color temperature at the target time.

Illumination system and mobile body

An illumination apparatus includes light sources differing from one another in terms of light-emission color and voltage drop when identical current flows therein, switches in one-to-one correspondence with the light sources, a DC power supply circuit, and a control circuit. The control circuit performs a first control of the switches through a time division control method such that an on-period of each switch is not overlapped with that of any other switch. The control circuit also performs a second control to individually control at least one of a target current magnitude, flowing through each switch in the switched-on state, and a target on-period length of each switch, and to adjust a ratio of the plurality of light sources in terms of a product of the target current magnitude and the target on-period length.

Illumination apparatus and lighting device used thereby

An illumination system includes: a seat in a mobile body; a table to be positioned in front of a passenger when the passenger is seated on the seat; a first light source which illuminates the table; and a second light source which illuminates a region closer to the passenger than to the table. When a distance from the first light source to the table is equal to a distance from the second light source to a virtual irradiated surface, an illuminance on the table irradiated by the first light source is lower than an illuminance on the virtual irradiated surface irradiated by the second light source.

Illumination system, mobile body, and lighting control method

An illumination system includes: a seat; a wall; and a sleep control light for controlling sleep, wherein the seat includes a backrest and a seating portion, and makes a transition between a seated state and a lying state when the backrest and the seating portion make a slide movement, the seated state being a state where a minor angle formed between the backrest and the seating portion is a first angle, the lying state being a state where the minor angle is a second angle greater than the first angle, an optical axis of the sleep control light is tilted downward with respect to the horizontal plane, the sleep control light is located behind or above the seat when the seat is in the seated state, and the optical axis of the sleep control light passes through the backrest when the seat is in the lying state.

A lighting device includes: a DC power source circuit; an output control circuit including a chopping switch to adjust an output current by chopping of the chopping switch; light source switches respectively connected to the light sources; and a control unit for controlling a time period for which a current flows in the light sources. The control unit controls the output control circuit such that an operation period for which the chopping is conducted and a stop period for which the chopping is stopped are repeated alternately and performs switchover of the light source switches to be sequentially and selectively turned on, and the switchover is conducted during the stop period with a time interval from a beginning of the stop period.

Lighting device and illumination apparatus using same

A control unit of a light source device after activation time is configured to turn on switches respectively connected in series with light sources, in prescribed order. The light source device and a lighting device are configured to transmit characteristics of the light sources, based on a voltage change depending on a pattern of on and off of the switches.

Light source device, lighting device, and luminaire

A lighting device includes a power conversion unit, an impedance adjustment unit, a first control unit, and a second control unit. The power conversion unit is configured to convert input power to direct-current power used for a light source. The impedance adjustment unit is formed of a series circuit of a resistor element and a switch element and is coupled to the light source in parallel, relative to the power conversion unit. The second control unit is configured to cause the power conversion unit to operate, for each burst cycle, for an operation period which is not longer than the burst cycle, and increase and reduce the ratio of the operation period to the burst cycle. The first control unit is configured to make the switch element conductive for a predetermined adjustment period which is not longer than the operation period, during the operation period.

Lighting device and lighting fixture

An electronic device includes a housing, frame, and a lock attachment mechanism. The housing includes a front cabinet, and back cabinet which has opening and is attached to the front cabinet. The frame is disposed in the inside of the housing. The lock attachment mechanism includes lock attachment portion and hook portion. The lock attachment portion includes a pull-out portion with a hole disposed therein, and a leg portion protruding from the pull-out portion. The hook portion includes fixing portions attached to frame, and grappling portions that hook the leg portion with the pull-out portion being pulled out, and that form a gap through which the pull-out portion can be pulled out. The device further includes back cabinet having a holder. The holder restricts a movable range of lock attachment portion and holds the leg portion such that lock attachment portion is disposed at a location which allows the pull-out portion to be pulled out through opening.

Electronic device and method of assembling the same

The lighting device according to the present invention includes a power supply circuit, a temperature detection circuit, and a temperature control circuit. The power supply circuit supplies operation power to a light source including a solid state light emitting device. The temperature detection circuit measures a surrounding temperature of the light source and outputs the measured surrounding temperature as a detection temperature. The temperature control circuit determines whether an increase rate of the surrounding temperature exceeds a predetermined criterion value. When determining that the increase rate exceeds the criterion value, the temperature control circuit performs a process of decreasing a temperature of the light source.

An electronic ballast includes an AC-DC converter, a DC-DC converter, a cooling device and a power supply. The cooling device is configured to cool the light source. The power supply includes a first power supply configured to generate a first operating voltage from a first voltage obtained from a chopper circuit included in the AC-DC converter to supply the first operating voltage to at least one of the AC-DC converter and the DC-DC converter. The power supply further includes a second power supply configured to generate a second operating voltage from a second voltage obtained from the chopper circuit to supply the second operating voltage to at least the cooling device of the AC-DC converter, the DC-DC converter and the cooling device.

Electronic ballast and luminaire with the same

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Osaka, Japan

Junichi Hasegawa