| 摘要 |
A backlight structure for an instrument knob, and an instrument thereof. The backlight structure for an instrument knob comprises a housing (1), a knob (2) disposed outside the housing (1), a gears dial (3) disposed on the periphery of the knob (2), and a backlight module (4) mounted in the housing (1) and disposed adjacent to the gears dial (3). The backlight module (4) comprises a light source assembly (41), a light transmission element (42), and a light guide plate (43) disposed between the light source assembly (41) and the light transmission element (42). The gears dial (3) is disposed on an outer surface of the light transmission element (42) facing outside the housing (1). The light source assembly (41) emits light and the light emitted by the light source assembly (41) is transmitted and irradiated to the light transmission element (42) by means of the light guide plate (43), so that the light can penetrate through the light transmission element (42) and generate even back light at the position of the gears dial (3). In this manner, an operator can clearly see an indication character on the gears dial (3) in a dark environment and a pointing position on the knob (2), so that the operator can still use an instruction normally in the dark environment, thereby helping to improve the nice appearance of the instrument. |
