Activation of a far-red light device with a far-red light frequency that promotes the conversion of inactive Pfr to active Pr in short-day plants prior to a dark period.

An image display device includes a display panel, a space portion, an illuminator, a controller, and an illuminance sensor. The display panel is switchable between an image display mode in which an image is displayed and a transmissive mode in which the display panel is in a transmissive state where a back side of the display panel is visible in a front view. The space portion and the illuminator are provided behind the display panel. The illuminator emits illumination light to the space portion. The controller controls the illuminator. The illuminance sensor detects an ambient illuminance of the image display device. The controller performs illumination control for causing the illuminator to emit illumination light with a brightness that is in accordance with a result of detection by the illuminance sensor when the display panel is operating in the transmissive mode.

A light source device includes: light sources; a detector configured to detect light amounts; and a processor configured to: control the light sources to emit light beams by applying a pulse current with a pulse width larger than a predetermined pulse width to the light sources before the processor makes a shift to a strobe observation mode; set a pulse current value at which a ratio of the light amounts of the light beams emitted by the plurality of light sources becomes a predetermined ratio for the plurality of light sources based on a detection result detected by the detector under a state where the pulse current with the pulse width larger than the predetermined pulse width is applied to the plurality of light sources; and make the shift to the strobe observation mode while maintaining the pulse current value for realizing the predetermined ratio.

An emergency lighting system that includes a storage device, an emergency lighting device, an area control device and an external device. The emergency lighting device includes a light, a first controller having a first electronic processor configured to perform a self-diagnostic test, and a first input/output (I/O) device configured to transmit data associated with the self-diagnostic test. The area control device includes a second I/O device configured to receive data associated with the first self-diagnostic test form the first I/O device and transmit the data associated with the self-diagnostic test to the storage device.

A lighting device includes a light source and a power switching circuit including a plurality of power input circuits. Each of the power input circuits includes a power input terminal and a switch control circuit connected in series between the power input terminal and the light source. A control terminal of Nth switch control circuit controls the Nth switch control circuit to be turned off according to a first electrical signal input by first to (N−1)th power input terminals. The control terminal of the Nth switch control circuit controls the Nth switch control circuit to be turned on according to a second electrical signal being input by Nth power input terminal, and controls the first to (N−1)th switch control circuits to be turned off. The N is a positive integer greater than 1. A power switching circuit is also provided.

A wireless lighting control system is provided to create a lighting pattern by remotely controlling a plurality of lighting devices according to groups, thereby improving a lighting effect. The wireless lighting control system includes a first lighting device electrically connected with a first smart device to act as a master, and a plurality of second lighting devices electrically connected with a plurality of second smart devices to act as slaves, respectively. If a group for lighting control and control pattern information according to groups are selected from the first smart device, the first lighting device transmits the control pattern information according to the groups to the second lighting devices through a wireless communication scheme. At least one of lighting units of the second lighting devices and display units of the second smart devices is controlled based on the control pattern information according to the groups.

The present techniques concern methods and systems for controlling horticultural light sources illuminating a plant or crop during a distribution process including one or more phases, and more specifically relate to methods and systems for controlling horticultural lighting sources during an initial phase, a transit phase and a selling phase of the distribution process, each phase taking place a different location one from another. In some implementations, the present techniques allow illuminating the plant or crop according to a global dynamic lighting scenario, wherein at least a portion of the global dynamic lighting scenario is associated with a corresponding phase of the distribution process.

[Problem] To implement a variety of realistic staging under various venue environments. [Solution] An event staging system according to the present invention comprises a first device attached to a first moving body and a second device attached to a second moving body. The first device comprises a control means which generates a control command including operation control information for controlling the operation of the device, and a communication means which outputs radio waves of a predetermined intensity and wirelessly transmits the control command within a distance range reachable by the radio waves of the predetermined intensity. The second device includes a communication means which wirelessly receives the control command and an operation execution means which executes operation according to the operation control information included in the wirelessly received control command.

The invention relates to an adaptor for electrically connecting a lighting apparatus to an electrified track, wherein the electrified track comprises AC main phases L1, L2 and L3 and a neutral wire N, wherein the adaptor has a housing designed to be inserted into a U-shaped profile of the electrified track, wherein the adaptor has contacts for contacting the AC main phases L1, L2 and L3 and the neutral wire N of the electrified track, wherein the adaptor comprises an electronic control unit in the housing, wherein the control unit is configured to select a combination of one of the all connected AC main phases L1, L2, L3 with the neutral wire N for supplying the lighting apparatus.

A control device configured for use in a load control system to control an external electrical load may provide simple feedback regarding the operation of the control device. For example, the control device may comprise a base portion configured to be mounted to an electrical wallbox or over a mechanical switch, and a control unit connected to the base portion. The control unit may comprise a rotation portion rotatable with respect to the base portion, an actuation portion, and a light source. The control unit may be configured to control the light source to illuminate at least an illuminated portion of the actuation portion in response to actuations of the rotation portion and the actuation portion. In addition, the control unit may provide a limit indication on the illuminated portion by blinking the illuminated portion when the electrical load has reached a limit.