Illuminating device with heat-dissipating function

[0029] Referring to FIGS. 3 and 4, an illuminating device 3 in accordance with the present invention comprises a housing 4, an illuminating module 5, and a photographing module 6. The housing 4 include a housing body 41 and a cap 42. The housing body 41 is substantially cylindrical and includes an open first end 411 and a second end 412 tapered to form a smaller opening through which wires (not labeled) for the illuminating module 5 and the photographing module 6 are extended. The open first end 411 of the housing body 41 includes an outer threading 415, and a peg 413 is formed on an end face of the open first end 411.

[0030] The cap 42 is also substantially cylindrical and sized to match the open first end 411 of the housing body 41. In particular, the cap 42 includes a first end 421, a second end 422, and an inner threading 426 for threadedly engaging with the outer threading 415 of the housing body 41. A glass 424 is fixed by a retainer ring 423 to an inner side of the second end 42