Abstract: An atmosphere starry sky light for festival entertainment is provided. The constellation unit is configured to switch patterns of twelve constellations and perform projection display on the patterns of the twelve constellations. The starry sky unit is configured to project a starry sky background. The background unit is configured to project patterns of aurora, clouds, and ripples. The planetary unit is configured to switch patterns of a planet, and to project and display a planetary image. The constellation unit, the planetary unit, the starry sky unit and the background unit form a panoramic image of the cosmic starry sky by superimposing and combining.

Abstract: A reflected light projection device is provided, comprising a projection light source assembly, a light source fixing plate for fixing the projection light source assembly, a rotatable reflector cup, a dust-proof light-transmitting sheet, and a motor driving the reflector cup to rotate. The dust-proof light-transmitting sheet, the reflector cup, the light source fixing plate, and the projection light source assembly are sequentially stacked and arranged on the motor, and the projection light source assembly, the light source fixing plate, and the reflector cup are respectively provided with a first opening, a second opening, and a third opening through which the motor passes, and a light emitted by the projection light source assembly directly irradiates the reflector cup that rotates under a drive of the motor, and the light is reflected by the reflector cup and then projected to a surface of an external medium through the dust-proof light-transmitting sheet.