Abstract: Disclosed is a drive integrated circuit for controlling a traffic light. The drive IC comprises an input end and an output end, an input low-voltage control circuit, a gain control circuit, a driving circuit, an impedance loop and a phase detection circuit. The input low-voltage control circuit connects to the input end of the drive IC, and receives a first external signal. The gain control circuit connects to the input low-voltage control circuit. The driving circuit connects to the gain control circuit. The impedance loop connects to the input end to detect whether the traffic light is damaged. The phase detection circuit connects to the input end to detect a phase difference of the driving signal. By integrating circuits having different detection and control functions in one single chip, the cost of the drive IC decreases and the traffic light can have a less thick structure.

Abstract: A traffic light including a plurality of light emitting elements and at least one light guide plate is provided. Each of the light emitting elements is configured to emit a light. The light emitting elements are disposed beside a light entering surface of the at least one light guide plate. Each of the lights enters the at least one light guide plate through the light entering surface of the at least one light guide plate.

Abstract: A light emitting device includes a casing, a light blocking member, and a light emitting unit. The light blocking member is disposed within the casing, and is adapted to block an ambient light incident into the casing. The light emitting unit is disposed within the casing.

Abstract: The illuminated sign includes a frame defining a space, a light emitting module received in the space and having a plurality of light emitting members disposed on a circuit substrate, an optical path conversion component provided on the frame to correspond to the light emitting members, and a light uniformizing component positioned a distance above the optical path conversion component. The space is compartmented to form a predetermined pattern, projecting a desired signal when the light emitting members in different compartments of the space are selectively illuminated.

Abstract: A light emitting device includes a casing, a light blocking member, and a light emitting unit. The light blocking member is disposed within the casing, and is adapted to block an ambient light incident into the casing. The light emitting unit is disposed within the casing.

Abstract: A light emitting diode (LED) traffic signal light module is provided. The LED traffic signal light module comprises a housing, an LED module, a power supply module and a lens set. The LED module is disposed on an inner wall in the housing. The power supply module is disposed in the housing, wherein the power supply module is electrically connected to the LED module. The lens set is disposed on the housing.

Abstract: Disclosed is a drive integrated circuit for controlling a traffic light. The drive IC comprises an input end and an output end, an input low-voltage control circuit, a gain control circuit, a driving circuit, an impedance loop and a phase detection circuit. The input low-voltage control circuit connects to the input end of the drive IC, and receives a first external signal. The gain control circuit connects to the input low-voltage control circuit. The driving circuit connects to the gain control circuit. The impedance loop connects to the input end to detect whether the traffic light is damaged. The phase detection circuit connects to the input end to detect a phase difference of the driving signal. By integrating circuits having different detection and control functions in one single chip, the cost of the drive IC decreases and the traffic light can have a less thick structure.

Abstract: An indicating device includes a circuit substrate, a frame, a light emitting module, an optical path conversion component, and a light uniformizing component. The frame is disposed on the circuit substrate, wherein the frame has an accommodating space for forming a predetermined pattern. The light emitting module includes a plurality of light emitting members disposed dispersedly on the circuit substrate and received in the accommodating space. The optical path conversion component is disposed on the frame, wherein the optical path conversion component has a plurality of optical path conversion structures respectively corresponding to the light emitting members. The light uniformizing component is disposed above the optical path conversion component, and the light uniformizing component and the optical path conversion component are separated apart from each other to define a predetermined distance.

Abstract: A light emitting diode (LED) traffic signal light module is provided. The LED traffic signal light module comprises a housing, an LED module, a power supply module and a lens set. The LED module is disposed on an inner wall in the housing. The power supply module is disposed in the housing, wherein the power supply module is electrically connected to the LED module. The lens set is disposed on the housing.

Abstract: An optical element of a lighting device and a design method of the same are revealed. The optical element is used together with a LED lighting part. The design method includes steps of providing a LED lighting part, selecting a suitable equation used in describing curves and surfaces for simulation test, substituting and changing a plurality of parameters in the equation to run simulation test of the light emitted from the LED lighting part for determining curves and surfaces of the incident surface and the emission surface that satisfy requirements of a specific light distribution pattern. The optical element features on that an air gap is between the incident surface and the LED lighting part. The slope of the incident surface and the slope of the emission surface are of opposite signs on the X-Z surface that passes the origin and ? angle is within 80 degrees around an optical axis of the LED lighting part.

Abstract: An optical member of lighting device is revealed. The optical member consists at least one emergent surface that is a spherical surface or an aspherical surface, and at least one incident surface with a V-shaped groove or a V-shaped like groove. The V-shaped groove is formed by two symmetrical or asymmetrical slants while the V-shaped like groove is formed by a plurality of curves. Moreover, axes of the emergent surface and the incident surface can be overlapped, shift relatively, slanted relatively to each other or combinations of them. When the optical member is used in combination with at least one solid state lighting element, an asymmetrical batwing light distribution pattern that features on non-zero maximum light intensity is generated. Thus the area being emitted is with uniform luminance and the availability of light is improved.

Abstract: A lens device used for an LED package includes a base portion, and a refracting portion formed on the top face of the base portion. A recess corresponding to the refracting portion is formed on the bottom face of the base portion. At least one notch connecting with the recess is also formed on the bottom face of the base portion. A surface of refracting portion is provided as a non-spherical convex surface. An indent is formed on the center of the non-spherical convex surface. The light emitted from the LED package is directed toward lateral side, and the angular intensity distribution has an asymmetrical batwing shape, so as to obtain an illuminating apparatus with uniformly illumination.