Battery charging status indicator for electric vehicle

1. A charging status indicator of an electric vehicle installed at one side of a charging status indicator cover to indicate a charging status of the electric vehicle as an illumination, the indicator comprising:

a lens-integrated lamp housing and a printed circuit board (PCB) housing vertically coupled to each other;

a PCB installed in the PCB housing and having a plurality of Light Emitting Diodes (LEDs) mounted thereon; and

a diffusion cap diffusing LED light irradiated to a lens of the lamp housing while covering the LEDs on the PCB,

wherein a pattern portion for diffusing the LED light is formed at a bottom of the diffusion cap, and

wherein the pattern portion comprises:

a sparse pattern portion formed in a first region corresponding to a position of the LEDs and having a predetermined number of patterns on the first region; and

a dense pattern portion formed in a second region corresponding to a position between the LEDs and having a larger number of patterns than the predetermined number of the sparse pattern portion on the second region.

2. The charging status indicator of claim 1 , wherein the lens of the lamp housing is formed in a quadrangular projection shape, and an upper end of the diffusion cap is received in the lens and positioned adjacent to the lens therein.

3. The charging status indicator of claim 2 , wherein the lens of the lamp housing comprises a black smog lens in order to solve a vague reflection problem.

4. The charging status indicator of claim 1 , wherein a heat sink thermal conductive film transferring heat generated from the LEDs and a microcomputer configured to be attached on the PCB to a heat sink side formed at a bottom of the PCB housing is attached to a bottom of the PCB and dissipation of the heat is performed by a thermal conducting method.

5. The charging status indicator of claim 1 , wherein the LEDs comprise a Red, Green, Blue (RGB) LED in which the charging status is indicated through color conversion.

6. The charging status indicator of claim 1 , wherein the lens of the lamp housing comprises a black smog lens in order to solve a vague reflection problem.

7. The charging status indicator of claim 1 , wherein the diffusion cap is a rectangular cap in a lens shape of the lens-integrated lamp housing.

8. The charging status indicator of claim 1 , wherein the sparse pattern portion is formed in a region corresponding to a directly upper portion of a portion where the LEDs are positioned in an upper region of the diffusion cap, and the dense pattern portion is formed in a region corresponding to a directly upper portion between the LEDs.

9. The charging status indicator of claim 1 , wherein the pattern portion is formed in a dotted shape including a convex shape or a concave shape.

10. The charging status indicator of claim 1 , wherein the diffusion cap has an edge portion formed in a rounded shape to reduce a refractive index difference, thereby improving uniform distribution of light irradiation and a shaded edge and increasing a volume of the lens.

11. The charging status indicator of claim 1 , wherein the sparse pattern portion and the dense pattern portion are configured to extend toward the LEDs in a predetermined length.