Abstract: An illuminating lamp and a vehicle head lamp, using a light emitting diode, respectively, are capable of not only keeping the same brightness as obtained at the time of lighting after many hours from the lighting, but also being usable for many hours without deterioration in efficiency besides advantages of providing a high output in low power consumption, a long service life, and a simple structure. The illuminating lamp comprises a light source support made up of an upper structure and a lower structure, the upper structure being linked with the lower structure via the heat conduction bar, wherein the light source support is inserted into an aluminum heat-release mount, thereby causing heat generated from the light emitting diode to be released into the aluminum heat-release mount through cooling of the heat conduction bar.

Abstract: Disclosed is a method for measuring a distance by using a radio-wave and an ultra-sonic wave. The method includes the steps of generating a certain start pulse in the form of a radio-wave between a measuring position and a position to be measured from the measuring position, receiving the radio-wave at the position to be measured while simultaneously generating an ultra-sonic wave from the same measuring position, determining a time difference between the moment of generating the start pulse and the moment of receiving the ultra-sonic wave, and multiplying the obtained difference by the sonic velocity.The method of measuring distances by utilizing the radio-wave and the ultra-sonic waves is very accurate without false operation and is simple, brief and convenient to use.