| 摘要 |
The present invention relates to a traffic sign board having a dew condensation prevention function. The traffic sign board has a sign board having a directional sign board comprising a letter and a figure and including a light emitting unit for emitting light of the letter and the figure of the directional sign board. A lighting unit and a rear board are arranged in order at multiple layers on the rear of the sign board. A frame is mounted along a piled edge of the sign board, the lighting unit, and the rear board, and a sealing space sealing a space between the sign board and the rear board is installed inside. A part of the light emitting unit modularized is installed in the sealing space to emit the light of the directional sign board. The rest space in which the light emitting unit is not mounted is installed as a heat storage space capable of storing heat to prevent the temperature of the traffic sign board from being rapidly decreased. When a sudden temperature change occurs or when surface temperature difference occurs due to the light emitting unit turned off, the traffic sign board prevents dew condensation from generating on a display unit of the front surface of the traffic sign board and prevents discrimination from being degraded. |
