| 摘要 |
PURPOSE: An irradiation angle control method of an LED tunnel lamp is provided to adjust an angle in a width direction, thereby evenly irradiating light to an inside of a tunnel. CONSTITUTION: An initial illuminance table output step(S100) inputs installation intervals of a tunnel lamp to an illuminance simulation program and finds an illuminance table before adjustment. An angle control section deriving step(S200) derives an angle and an illumination range. A first installation angle control step(S300) controls an LED assembly in the opposite direction of a progress direction for a vehicle to prevent dazzle of a driver. A second installation angle control step(S400) controls an angle so that an LED assembly in a first column faces to a center of a tunnel from a side wall in the tunnel. The second installation angle control step controls the angle so that an LED assembly in a second column faces to the side wall in the tunnel. An illuminance confirmation and correction step(S500) confirms whether or not the uniformity factor of a tunnel illumination standard is satisfied. [Reference numerals] (S100) Initial illuminance table output step; (S200) Angle control section deriving step; (S300) First installation angle control step; (S400) Second installation angle control step; (S500) Illuminance confirmation and correction step
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