Illuminating device

An illuminating device, including a heat-dissipating shroud, a heat-dissipating module, an upper cover module and a lower cover module, the heat-dissipating module comprising a light source, a substrate, a heat-conducting element and heat-dissipating blades, the upper cover module comprising an upper cover, a light sensor and a protective cover, the lower cover module comprising a lower cover, a transparent shroud and a transformer, wherein:

• the heat-dissipating shroud is assembled above the heat-dissipating blades of the heat-dissipating module, a top surface of the heat-dissipating shroud is provided with heat-dissipating holes arranged regularly or irregularly, a space of a suitable height is generated between the top surface of the heat-dissipating shroud and the heat-dissipating blades of the heat-dissipating module to act as a heat concentration chamber, a gap is formed between the bottom of the heat-dissipating shroud and the top surface of the upper cover of the upper cover module;
• the substrate is provided above the light source, the substrate is assembled in a mounting hole of the upper cover of the upper cover module, the heat-conducting element is assembled with the substrate and thus brought into contact with the substrate, the surface area of the heat-conducting element is larger than the surface area of the substrate, the heat-dissipating blades are assembled above the heat-conducting element and brought into contact with the heat-conducting element, the light source is provided below the upper cover of the upper cover module, the light source is electrically connected to the transformer of the lower cover module;
• a front end of the upper cover is provided with the mounting hole in which the substrate of the heat-dissipating module is assembled, a middle portion of the upper cover is provided with a base in which the light sensor is assembled, the protective cover is mounted outside the light sensor, the light sensor is electrically connected to the light source of the heat-dissipating module and the transformer of the lower cover module, the upper cover is combined with a lower cover of the lower cover module;
• a front end of the lower cover is provided with a hole in which the transparent shroud is received, a rear end of the lower cover is provided with a space in which the transformer is mounted, the lower cover is assembled with the upper cover of the upper cover module.