Provided is a monitoring camera apparatus that can pick up, when an image of a signal lamp of a traffic signal is picked up by a monitoring camera at night, an image of an image pickup region other than the signal lamp bright without saturating a red signal lamp.The monitoring camera apparatus includes signal controlling means including RGB ratio detecting means for detecting lighting, lighting/extinguishing times, the shape and the number, or signal lamp control signals of signal lamps of a traffic signal in the image pickup region and detecting ratios of RGB signals of the signal lamps, gain controlling means for controlling a gain of the RGB signals, and color mixture controlling means for controlling color mixtures of respective signal lamp colors. The signal controlling means detects ratios of RGB signal levels on the basis of lighting, lighting/extinguishing times, the shape and the number, or signal lamp control signals of respective signal lamps of green, yellow, and red, specifies the signal lamps as a red signal lighting region of a red signal lamp if R>G≈B, attenuates GB signals or reduces the GB signals to zero and reduces color mixture in the color signal lighting region with the color mixture controlling means, and makes it possible to display lighting of the red signal lamp as a red color on a monitor.