An illuminated pushbutton swich cover member (11) has a key seat (13) and a resin key top (12). An indicator portion (17) provided in the resin key top (12) is illuminated with light from an internal light source (14b) provided below the key seat (13), and the light is emitted from the inside to the outside of the cover member (11) through the indicator portion (17). The cover member (11) is constructed by joining the resin key top (12) to the key seat (13). The key seat (13) is formed of a thermoplastic elastomer that prevents leakage of light, and an opening (13f) for passage of light is formed in the key seat (13) to expose the bottom side of the resin key top (12) to the internal light source (14b). Thus, light from the internal light source (14b) can reach the bottom side of the resin key top (12) directly without being attenuated. The indicator portion (17) of the resin key top (12) can therefore be illuminated with high luminance.