초록 ▼

A camera having a photovoltaic cell such as a solar cell is provided. A power supply circuit of a camera comprises a solar battery, a second battery and a switch. If the second battery is a secondary battery, the switch is closed to connect the solar and second batteries in parallel. Otherwise, the

A camera having a photovoltaic cell such as a solar cell is provided. A power supply circuit of a camera comprises a solar battery, a second battery and a switch. If the second battery is a secondary battery, the switch is closed to connect the solar and second batteries in parallel. Otherwise, the switch is kept open to disconnect the solar battery from the second battery. A particular upper cover structure is provided for mounting a photovoltaic device without deteriorating the rigidity and loosing light-tightness.

대표청구항 ▼

A power supply circuit of a camera having a camera body provided with a battery chamber for supplying an electric power to a control circuit of said camera for carrying out at least a part of the photographic operation, comprising: a solar battery; a second battery removably provided in said chamber

A power supply circuit of a camera having a camera body provided with a battery chamber for supplying an electric power to a control circuit of said camera for carrying out at least a part of the photographic operation, comprising: a solar battery; a second battery removably provided in said chamber to be electrically connectable to said control circuit, said second battery being a selected one of either a primary battery or a second battery; means for indicating said second battery to be a secondary battery when said second battery is a secondary battery; connection means for electrically connecting said solar battery and second battery in parallel; switch means provided in said connection means for connecting said solar battery to or disconnecting said solar battery from said second battery through said connection means; and detecting means for detecting whether said battery is a primary battery or a secondary battery based on said means for indicating when said battery is removably provided in said battery chamber in position, said detecting means causing said switch means to connect said solar battery to said second battery through said connection means only when said second battery is detected to be a secondary battery due to presence of said means for indicating, said detecting means causing said switch means to maintain said solar battery disconnected from said second battery when said second battery is detected to be a primary battery due to the presence of said means for indicating.