Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Works, Ltd.

Panasonic Electric Works Co., Ltd.

Koji Noro

Ryusuke Kotera

Noriyuki Fukumori

Hirofumi Konishi

Kenichi Fukuda

Hideharu Kawachi

Katsushi Seki

Satoshi Fukano

Takeshi Goriki

Akihiro Kishimoto

Osamu Tanahashi

Masanao Okawa

Yohei Hayashi

Youji Tachino

Akihiro Hirano

Koji Yamashita

Toshiaki Sasaki

Ryusukue Kotera

Yoshiro Goto

A lighting apparatus includes a light-emission unit having plate shape; and a base unit configured to be detachably attached thereto the light-emission unit. The base unit has substantially rectangular shape. The base unit includes a power supply rail for supplying electricity to the light-emission unit and a support section supporting the light-emission unit. The power supply rail has rail-shape and extending in a longitudinal direction of the base unit. The light-emission unit includes a luminescent panel, a control circuit configured to control lighting of the luminescent panel and an electrically conductive connection terminal electrically connecting the control circuit to the power supply rail. The base unit is formed so as to be capable of being attached thereto a plurality of the light-emission units along the longitudinal direction of the base unit. The connection terminal is connected to an arbitrary point of the rail-shaped power supply rail.

Lighting apparatus and lighting apparatus assembly using the same

A lighting device pertaining to one aspect of the present invention includes a mount, a light-emitting module, and a substrate holder. The light-emitting module is mounted on a main surface of the mount, and the substrate holder covers a portion of the light-emitting module and is connected with the mount. The light-emitting module includes a substrate, a plurality of light-emitting elements, a sealant and a padding. The padding is provided on a first main surface of the substrate. The light-emitting module is mounted on the main surface of the mount such that a second main surface of the substrate comes into contact with the main surface of the mount, and the light-emitting module is fixed to the mount by pressure applied from the substrate holder via the padding brought into contact with the substrate holder. The padding is made of a same material as the sealant.

Lighting device and light-emitting module

A level shift IC () of a power supply/shutoff section () is operable, when a shutoff signal (Sa) is input from a timer circuit () for a time T during an ON state of a discharge lamp (), to turn off a MOSFET () so as to shut off power supply to a smoothing capacitor (). When a detection signal (Sb) of a capacitor voltage is lowered to a value less than a reference voltage Vrduring input of the shutoff signal (Sa), an output of a comparator () is changed from an H level to an L level in an inverted manner. In conjunction with this change, respective outputs of an auxiliary control circuit () and a NOT element (,) are changed from an L level to an H level in an inverted manner. As a result, a current flows from the NOT element () to an LED () through a resistor () to turn on the LED (). Thus, a life end of the smoothing capacitoris annunciated, and a main control circuit () is operable to suppress an output of an inverter main circuit ().

Discharge lamp lighting device, and lighting equipment and lighting system using the device

Even if a DC output voltage of a step-down chopper circuit () is lowered from a value in a non-lighted state or a no-load state due to a discharge occurring between conductors () in a cable (), the turn on detection circuit () can discriminates between lighted and non-lighted states without erroneously determining such a discharge as a discharge in a discharge lamp (). This allows an operation of the timer () to be continued, so that high-voltage pulses are intermittently applied to prevent continuous discharge between the conductors () and abnormal heat generation in the cable (). Further, even if a discharge occurs in an outer tube of the discharge lamp (), the turn on detection circuit () never erroneously discriminates this discharge as the lighted state. Thus, the lighting device of the present invention can suppress abnormal heat generations in the components and a socket ().

Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device

Growing community of inventors

Osaka, Japan

Koji Noro