A lighting structure for a ceiling fan includes a substrate. The substrate has a top surface and a bottom surface. At least a lamp is disposed on the bottom surface. A plurality of fins and an upright wall are disposed on the top surface. The upright wall extends upward and extends around an enclosure to form therein a receiving chamber for receiving a ceiling fan control device. A first connection portion is disposed near the top end of the upright wall and connected to the ceiling fan.

A light module, particularly for a motor vehicle, comprising a substrate, one or more light sources arranged on the substrate, and a metal coating on the substrate, forming power supply strips for the light source or sources. The metal coating extends at a distance from the supply strips and/or transversely with respect to said strips, in such a way as to form one or more auxiliary zones providing a heat screen, reflective surface, aesthetic surface, and/or electromagnetic shielding function.

A linear light-emitting diode (LED) lamp comprising a normally-operated portion and an emergency-operated portion is used to replace a luminaire operated only in a normal mode with alternate-current (AC) mains. The normally-operated portion comprises a fly-back converter whereas the emergency-operated portion comprises a rechargeable battery, a bidirectional circuit, a boost converter, a self-diagnostic circuit, and a control circuit. The linear LED lamp can auto-switch from the normal mode to an emergency mode according to availability of the AC mains and whether a rechargeable battery test is initiated. The bidirectional circuit is configured to convey a forward electric current and a reverse electric current to and from the rechargeable battery, respectively. The self-diagnostic circuit is configured to provide multiple sequences and to auto-evaluate battery performance according to the multiple sequences. During an auto-evaluation period, a terminal voltage on the rechargeable battery is examined with test results displayed in a status indicator.

A linear light-emitting diode (LED) lamp comprising a normally-operated portion and an emergency-operated portion is used to replace a luminaire operated only in a normal mode with alternate-current (AC) mains. The normally-operated portion comprises a fly-back converter whereas the emergency-operated portion comprises a rechargeable battery, a bidirectional circuit, a boost converter, a self-diagnostic circuit, and a control circuit. The linear LED lamp can auto-switch from the normal mode to an emergency mode according to availability of the AC mains and whether a rechargeable battery test is initiated. The bidirectional circuit is configured to convey a forward electric current and a reverse electric current to and from the rechargeable battery, respectively. The self-diagnostic circuit is configured to provide multiple sequences and to auto-evaluate battery performance according to the multiple sequences. During an auto-evaluation period, a terminal voltage on the rechargeable battery is examined with test results displayed in a status indicator.

A laser projection system having built-in safety systems is disclosed. Further disclosed is a method of operating a laser projection system such that safe operation is a factor only of meeting a threshold distance between the laser unit and an audience member. To accomplish safe operation at the threshold distance, the laser projection system is pre-calibrated to operate below maximum permitted exposure levels at the threshold distance. In this manner of operation, laser lighting can be accomplished by non-laser professionals without the complexity, external sensors, and need for calibration at the venue.

A laser projection system having built-in safety systems is disclosed. Further disclosed is a method of operating a laser projection system such that safe operation is a factor only of meeting a threshold distance between the laser unit and an audience member. To accomplish safe operation at the threshold distance, the laser projection system is pre-calibrated to operate below maximum permitted exposure levels at the threshold distance. In this manner of operation, laser lighting can be accomplished by non-laser professionals without the complexity, external sensors, and need for calibration at the venue.

Infusion pump control unit keypad assemblies are provided, and include a cover assembly having an outer surface and an inner surface and a perimeter gasket disposed within a raised perimeter on the outer surface of the cover assembly. A lens and a circuit assembly are coupled to the outer surface of the cover assembly. A switch assembly is coupled to the circuit assembly, a shield assembly is coupled to the switch assembly, a light assembly is coupled to the shield assembly and an overlay assembly is coupled to the light assembly. Methods of making infusion pump control unit keypad assemblies are also provided.

A linear light apparatus includes a light strip, a light passing cover, a main bracket, a bottom holder and a metal clip. The light strip having an elongated substrate mounted with LED modules. The main bracket holds the light strip for the LED modules emitting a light passing through the light passing cover. The metal clip has a first thorn and a second thorn. The metal clip is pressed to one side wall for the first thorn to stab a second insulation layer to electrically connect the bottom holder and the metal clip. The second thorn stabs a first insulation layer for the metal clip to be electrically connect to the first metal part of the main bracket.

The present invention generally directed to arc detection circuits or systems that help prevent fire damage to solid state (LED) based light sources by providing an arc detection system that can be used to detect acing in LED based light fixtures. Once the arcing is detected, power can be quickly turned off to the lighting system. One arc detection circuit according to the present invention comprises a high pass filter circuit arranged to accept an electrical signal with an arc current component having one or more arcing events and a direct current (DC) component, wherein the high pass filter passes only the arc current component. An arc detection circuit is included that accepts the arc current component and filters out arcing events below a threshold. Wherein the arc detection circuit provides an arcing signal with arcing events above said threshold. A microcontroller is also included that accepts the arcing signal to generate control signals based on the arcing signal. In some embodiment, the control signals can be used to control a power supply.

An LED lamp includes an elongated housing, LED arrays, a rechargeable battery, a controller circuit, two drivers, a charging circuit, and a battery backup user interface. The first driver converts an external power to drive the LED array whereas the second driver draws power from the rechargeable battery to drive the LED arrays during power outage. The charging circuit charges the rechargeable battery during normal operation. The battery backup user interface includes a battery charging indicator indicating the charging status of the rechargeable battery. The battery backup user interface also includes a battery shutoff switch configured to allow a user to enable or disable the rechargeable battery. In some cases, the battery backup user interface further includes a test button configured to allow the user to trigger a test of the rechargeable battery.