Abstract: A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

Abstract: A traffic light includes a circuit board on which linear arrays of light-emitting diodes (LEDs) are mounted in a V-shaped arrangement, an inner cover having a first inner surface facing the LEDs to receive light from the LEDs and an opposite, first outer surface forming elongate prisms inclined with respect to a predetermined axis at a predetermined angle of 65-80 degrees, and a front cover having a second inner surface facing the first outer surface of the inner cover to receive the light from the inner cover, and an opposite, second outer surface through which the light is further projected out of the traffic light. The second inner surface of the front cover forms a honeycomb structure including a plurality of hexagonal lens blocks, each composed of an array of individual lens segments.

Abstract: A memory card with an indicator light has a casing, a processor, an input/output (I/O) interface, memory and an indicator light module. The indicator light module is mounted in the casing and connected to the I/O interface and has an inductor, an LED and a resistor. The inductor is connected to the I/O interface and has an input end and an output end. The LED is mounted on the casing and connected to the output end of the inductor. The resistor is connected in series with the LED. When the LED is not on, electrical power is not being provided to the proper pin on the I/O interface from the digital device. Consequently, any fault observed when the LED is not on can be attributed to a fault in the digital device.

Abstract: A mini memory card adapter that receives a mini memory card (e.g. MicroFlash) to make it compatible with a standard memory card interface. The mini memory card adapter is comprised of a base, a cover and a connection module. A socket is defined at a proximal end of the base, and an inner wall of the socket has a positioning tab integrally formed thereon to fix an inserted memory card. A metal panel has a contact finger that electrically contacts a ground point to provide protection against EMI interference.

Abstract: A memory card casing is composed of a top cover having multiple through holes defined in a peripheral edge of the top cover, and a bottom cover, wherein the bottom cover has multiple longitudinal ridges formed on a peripheral edge of the bottom cover, a first rib formed on the bottom cover to connect to one end of each of the longitudinal ridges and a second rib formed on the bottom cover to connect to the other end of each of the longitudinal ridges so that after a printed circuit board is inserted into a receiving space between the bottom cover and the top cover, contacts on the printed circuit board are exposed via the through holes of the top cover and fully supported by the longitudinal ridges.