Abstract: A lamp device with power outage sensing abilities to detect when a primary power source is interrupted and to energize primary LEDs when primary power source is ON, and to energize backup LEDs when the primary power source is OFF. The power outage sensing circuit may also detect a light switch condition allowing for greater efficiency in emergency power supply usage. A battery charging system may provide battery thermal protection and multiple charge rates to improve battery charging as a function of the temperature in the lighting device.

Abstract: A lamp device with power outage sensing abilities to detect when a primary power source is interrupted and to energize primary LEDs when primary power source is ON, and to energize backup LEDs when the primary power source is OFF. The power outage sensing circuit may also detect a light switch condition allowing for greater efficiency in emergency power supply usage. A battery charging system may provide battery thermal protection and multiple charge rates to improve battery charging as a function of the temperature in the lighting device.

Abstract: An emergency lighting device includes a backup power supply for illuminating a light during a power loss. The lighting device includes a transmitter, which transmits a signal to a receiver during a power outage. When the receiver receives the signal, the source of power switches from the primary power source, e.g., AC utility power, to a backup power source, e.g., DC battery power. The lighting device may include an LED lamp in which AC-LEDs are selectively illuminated when primary power source is delivered and DC-LEDs which are selectively illuminated during a power outage.

Abstract: A lighting device includes two different types of light emitting elements and two different types of power sources for selective illumination. In particular, the lighting device has AC-LEDs and DC-LEDs that are illuminated by an AC power source and a DC power source, respectively, without the need for current conversion. The AC-LEDs and DC-LEDs may be disposed within a LED lamp which is installable in any preexisting light fixture.

Abstract: An emergency lighting device includes a backup power supply for illuminating a light during a power loss. The lighting device includes a transmitter, which transmits a signal to a receiver during a power outage. When the receiver receives the signal, the source of power switches from the primary power source, e.g., AC utility power, to a backup power source, e.g., DC battery power. The lighting device may include an LED lamp in which AC-LEDs are selectively illuminated when primary power source is delivered and DC-LEDs which are selectively illuminated during a power outage.

Abstract: A sign for the displaying of a number of characters in either a first orientation or at least one additional orientation. The sign includes a frame and a series of characters, including at least one variable position character, mounted to the frame. The variable position character is movable relative to the frame such that it may be read in different positions, to display a message when the variable position character is either in a first orientation or a second orientation. The variable position character may be interconnected with the frame via a pivoting mechanism for adjusting the orientation of the variable position character. The pivoting mechanism may include a latching mechanism that secures the variable position character in a selected orientation. The characters may each include a source of illumination, such as LEDs, that are interconnected with a power supply for selectively illuminating the LEDs.

Abstract: A lighting arrangement using LEDs that has an elongated translucent diffuser having a flat upper surface along the length of the diffuser. The transverse cross-section of the elongate translucent diffuser may have various shapes, all having substantially flat tops, including but not limited to quadrangular, rectangular, trapezoidal, and non-isosceles variations of these shapes. The elongated translucent diffuser is mounted on an elongated housing of substantially the same length to support the diffuser. The elongated housing may be solid or hollow and may contain the LEDs and circuit board, or the LEDs and circuit board may be contained within the elongated translucent diffuser. The LEDs are configured to transmit light through the diffuser so that the emitted light simulates light from a traditional neon tube.

Abstract: A sign for the displaying of a number of characters in either a first orientation or at least one additional orientation. The sign includes a frame and a series of characters, including at least one variable position character, mounted to the frame. The variable position character is movable relative to the frame such that it may be read in different positions, to display a message when the variable position character is either in a first orientation or a second orientation. The variable position character may be interconnected with the frame via a pivoting mechanism for adjusting the orientation of the variable position character. The pivoting mechanism may include a latching mechanism that secures the variable position character in a selected orientation. The characters may each include a source of illumination, such as LEDs, that are interconnected with a power supply for selectively illuminating the LEDs.

Abstract: A lighting arrangement using LEDs that has an elongated translucent diffuser having a flat upper surface along the length of the diffuser. The transverse cross-section of the elongate translucent diffuser may have various shapes, all having substantially flat tops, including but not limited to quadrangular, rectangular, trapezoidal, and non-isosceles variations of these shapes. The elongated translucent diffuser is mounted on an elongated housing of substantially the same length to support the diffuser. The elongated housing may be solid or hollow and may contain the LEDs and circuit board, or the LEDs and circuit board may be contained within the elongated translucent diffuser. The LEDs are configured to transmit light through the diffuser so that the emitted light simulates light from a traditional neon tube.