To provide illuminating body for cooling equipment equipped with many light emitting diodes.

The illuminating body contains a U-character-form rod type material 16, to which a transparent cover 20 is equipped in a side part opened wide. Some modules 3 are inserted in the backside of the transparent cover. The module 3 contains a plastic housing 4 equipped with a base plate 5, with which a carrier web 6 is formed. The carrier web 6 surrounds fixing faces, on which circuit board strips 7 are put and which inclined mutually. Many LED are arranged in series one after another at the circuit board strip 7. LED2 has an irradiation angle β. The irradiation angle β and inclination angles αof two adjoining circuit board strips sitting each other correspond mutually. By attaching some modules 3 one after another in a common rail 8 by screws 28, the modules, which are prefabricated can be inserted in the rod form material 16 equipped with a suitable long direction web 17 having a long direction guide slot 18.