Lamp and Assembling Method Thereof

A lamp, comprising:

• at least two illumination parts;
• and
• a lamp body having an upper portion, a lower portion corresponding to said upper portion, and at least two optical cavities extended between said upper portion to said lower portion, wherein each of said optical cavities has at least one of said illumination parts arranged therein, wherein said lamp has a surrounding lighting state that said at least two illumination parts arranged in said at least two optical cavities respectively are operated to generate lights to a surrounding of said lamp all around, and a side lighting state that only said illumination part arranged in one of said at least two optical cavities is operated to generate light therein in a specific direction, wherein said lamp is configured to be switched between said surrounding lighting state and said side lighting state through controlling operating modes of each of said at least two illumination parts arranged in each of said at least two optical cavities.

An assembling method of a lamp, comprising the steps of:

• (a) arranging a partition member having a lower cover body formed at a lower end of a circular surrounding wall in an internal space of said surrounding wall, so as to form and define at least two optical cavities between said surrounding wall and said partition member and to utilize said lower cover body to close lower openings of said at least two optical cavities while said partition member divides said internal space of said surrounding wall into said at least two optical cavities;
• and
• (b) allowing a circuit board that closes upper openings of said at least two optical cavities to retain at least one illumination part at upper ends of said at least two optical cavities so as for assembling said lamp.