PURPOSE: An assembling outlet is provided to improve the assemblability by assembling laser diode to the upper sheet of a mat for treatment by controlling the interval of the upper and lower casings. CONSTITUTION: An assembling outlet comprises: a laser light generating means (110); a casing; a fastening means for interval control (130); and a water proof packing (140). The laser light generating means is connected with laser diode (112) to operate the laser diode which is able to generate the laser light. The laser light generating means comprises a laser oscillation circuit board (114) equipped with variable resistance capable of modulating the exposure of light precisely. The top and bottom of the laser light generating means are opened to release the heat generated by the laser diode. The laser light generating means is installed to surround the laser diode, and a heat radiation bushing (116) with a concavo-convex region is formed on the outer periphery. The casing comprises a lower casing (120b) and an upper casing (120a) to minimize the heat generation of the laser diode equipped in the light generating means. The lower casing is equipped with an accommodating space for the laser oscillation circuit board which is supposed to stand vertically. The upper casing is installed integrally with a lens (122) where the laser light is penetrated.본 발명의 목적은 치료용 매트에 레이저 다이오드를 보다 용이하게 설치할 수 있게 함과 아울러 상하부케이싱의 간격을 조절하면서 치료용 매트의 상부시트에 조립 체결할 수 있게 하고, 또 레이저 다이오드를 감싸는 형태로 방열부싱을 설치함에 의해 레이저 다이오드에서 발생하는 열을 보다 효율적으로 방열시킬 수 있게 하며, 시트에 체결되는 케이싱의 틈새를 통해 수분 침투를 억제할 수 있게 방수패킹을 설치하여 방수성능을 향상시켜 제품의 수명을 연장시킬 수 있는 광화학적 치료용 레이저 다이오드의 조립체결구를 제공한다.