JPS63200715U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention, with Figure 1 being a plan view, Figure 2 being a sectional view taken along line A--A in Figure 1, and Figure 3
The figure is a bottom view, and FIG. 4 is a combination explanatory diagram. 1...Cylinder, 2...Direct light entrance hole, 3...Photo sensor.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plurality of direct light entrance holes having a sunlight entrance on the sun facing side are arranged or formed on the same circumference at equal intervals, Each of the holes is tilted at the same angle in a radial or reverse radial direction facing in the direction opposite to the solar direction, and a photo sensor is arranged at the same distance below the hole,
The inclination angle of the sunlight entrance hole is set at an angle such that only direct sunlight is directly incident on the photo sensor,
A sunlight tracking sensor characterized in that the direction of the sun is detected based on the incident state of sunlight to a specific direct light incident hole of the plurality of direct light incident holes. (2) The sun according to claim 1 of the utility model registration claim, in which a plurality of holes drilled along the axis of a columnar body such as a cylinder or a plurality of pipes are used as direct light entrance holes. Light tracking sensor. (3) The sunlight tracking sensor according to claim 1, wherein the inner peripheral surface of the direct light entrance hole is treated to prevent diffused reflection. (4) The sunlight tracking sensor according to claim 1, which uses eight holes with a circular cross section as the direct light entrance holes.