Abstract: Both end portions of a light guide body (3) are bent in respective directions towards a second main surface to form guide portions (31, 32). Light that is emitted from each light source (4, 5) mounted on a wiring board arranged on the rear side of the light guide body and that travels in a direction vertical to main surfaces of the light guide body is guided by each guide portion (31, 32) into light propagating in a direction along the main surfaces of the light guide body. Reflection surfaces of a plurality of grooves (13) formed on the light guide body radially from the center position thereof reflect the light from the light sources to a dial plate (2) side and a diffusion printing diffuses the reflected light, so that the diffused light transmissively illuminates a scale marks section (21) and a numerical characters section (22) of the dial plate with uniform brightness.

Abstract: A ventilation system (20) made up of a wiring harness (22), a power source (21), a fan motor (23), a resistance circuit (70), and a selector switch (30-or 40) is taught. The selector switch (30 or 40) has five or six positions, and determines a different current through the fan motor (23) for each position. The resistance circuit (70) limits the current in three or four of the positions. A control apparatus (25) is mechanically coupled to the selector switch (23) and configured to allow a user to select one of the positions. One of the positions is an “off” position passing zero current through the fan motor (23), and one of the positions is a “maximum” position passing a maximum current through the fan motor (23). Each of the other positions is intermediate and passes a current through the fan motor (23) and a resistance in the resistance circuit (70) to limit the current.