Lamp for vehicle

1. A lamp for a vehicle, comprising:

at least one light source;

an outer lens for covering the at least one light source;

a housing coupled to the outer lens to form a space;

an antenna module disposed in the space and comprising at least one horn antenna for transmitting and receiving electromagnetic waves; and

a Printed Circuit Board (PCB) disposed in the space, and electrically connected with the at least one horn antenna,

wherein the PCB is horizontally disposed,

wherein a top surface of the PCB is electrically connected with the at least one horn antenna, and

wherein a bottom surface of the PCB is electrically connected with a Monolithic Microwave Integrated Circuit (MIMIC) that is included in a radar device.

2. The lamp of claim 1 , wherein the at least one horn antenna is disposed in a region to which light generated by the at least one light source is not emitted.

3. The lamp of claim 1 , wherein the at least one horn antenna is covered by a relatively flat region of the outer lens.

4. The lamp of claim 1 , further comprising a bezel, wherein the antenna module is integrally formed with the bezel.

5. The lamp of claim 1 , wherein the antenna module is horizontally disposed.

6. The lamp of claim 5 , wherein the at least one horn antenna is a H-plane sectoral horn array antenna.

7. The lamp of claim 5 , wherein the at least one horn antenna is an E-plane sectoral horn array antenna.

8. The lamp of claim 1 , wherein at least one opening is formed in the antenna module to irradiate electromagnetic waves.

9. The lamp of claim 8 , wherein a plurality of slots extending in an up and down direction is formed in the antenna module.

10. The lamp of claim 9 , wherein at least one of the plurality of slots is formed at a different position in the up and down direction, as compared with other slots.

11. The lamp of claim 8 , wherein a plurality of slots extending in a left and right direction is formed in the antenna module.

12. The lamp of claim 8 , further comprising a bezel having at least one slot formed therein to correspond to the opening.

13. The lamp of claim 8 , further comprising a bezel, at least part of which is surface-treated with a reflective material, and a region of which corresponding to the opening is excluded from a surface treatment.

14. The lamp of claim 13 , further comprising a cover coupled to the bezel, and covering the region corresponding to the opening.

15. The lamp of claim 4 , wherein at least one opening is formed in the bezel.