The present invention converts the linear solar light collected in the solar light collecting device using a Fresnel lens to an appropriate shape in the light-changing unit using the prism lens and then illuminates the room through an optical pipe connected to the room. It relates to a solar condensing lighting device using a prism lens.;The apparatus of the present invention comprises a lightweight aluminum frame 11 which is opposed to each other with two fan shapes facing each other, a Fresnel lens 12 attached to two arcuate portions of the frame 11, and two fan-shaped portions on both sides. A light collecting part 10 formed of a side high reflection film 13 attached to the frame; The band-shaped first prism lens 21 is connected to the condenser 10 so as to be positioned at the focal point of the Fresnel lens 12, and a central portion in the longitudinal direction of the image surface that is the focal position of the Fresnel lens 12 is formed. And a box-shaped light-changing portion 20 in which the second prism lens 22 which matches the cross-sectional shape of the light pipe 41 is located at the center in the width direction and the longitudinal direction of the bottom surface, and the rear surface of the second prism lens 22. An optical connector 30 having a triangular cross-sectional shape attached to the front surface to change the path direction so that light passing through the second prism lens 22 is properly transmitted to the light pipe 41; In order to receive the sunlight passing through the optical connector 30 and transmit it to the room, the optical connector 30 and one end is connected, and the other end is provided with a mirror 41C inside the front end surface. The extractor film 42 for uniform uniformity of the interior surface is attached to the inner upper surface of the pipe 41, and the diffuser film 43 for uniform uniformity of illuminance of the indoor working surface is attached to the inner lower surface of the pipe 41, respectively. The high reflection film 44 for effectively transmitting light in the longitudinal direction to the entire inner surface of the light pipe to which the diffusion film is attached is composed of a light distribution part 40 to be laminated and attached.;The solar condensing illumination device of the present invention is light and easy to install and transport by using the light weight Fresnel lens and prism lens, the overall weight of the device is remarkably reduced, and can be manufactured at a lower cost than using conventional structures and lenses. There is an advantage.
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