reflective body 118 and a lampshade 116 can be installed on a light output face of the housing 110 multiple leds 130 are mounted on the side wall 114 and light from the leds 130 is reflected by the reflective body 118 and traveling to the light output face the material of the housing 110 can be a metal to provide a supporting structure for the whole planar lighting source the reflective body 118 fixed on an inner surface of the housing 110 is an extruding structure in fig3 the reflective body 118 has a first reflecting surface 1181 and a second reflecting surface 1182 for reflecting light from the leds 130 wherein the first reflecting surface 1181 and the second reflecting surface 1182 are both of a plain shape capable of providing a metallic reflecting surface or a scattering surface the peak of the reflective body 118 is lower than the leds 130 so that light of the leds 130 one side left side for example can be prevented from reaching the other side right side for example as can be seen in fig3 a dash line is used to indicate the lowest level of the reflective body 118 and all the leds 130 are located higher than the dash line this arrangement can offer a superior lighting effect the leds 130 can be of a multi line structure with the lowest line of the multi line structure higher than the dash line the lampshade 116 can be a transparent lampshade a frosted lampshade a lampshade with a striped.