LIGHT-TRANSMISSIVE SUBSTRATE FOR SUPPRESSING HEAT-RAY TRANSMISSION AND LIGHT-TRANSMISSIVE SUBSTRATE UNIT
FIG4 is a cross-sectional view of a light-transmissive base material unit in one configuration example according to an embodiment of the present invention   FIG3 is a cross-sectional view of a heat-ray-transmission-controllable, light-transmissive base material in yet another configuration example according to an embodiment of the present invention
Next, a configuration example of a light-transmissive base material unit of the present embodiment will be described. As illustrated in FIG4, a light-transmissive base material unit 40 of the present embodiment includes a light-transmissive base material 41 for windows and a heat-ray-transmission-controllable, light-transmissive base material 42 described above disposed over one surface 41a of the light-transmissive base material 41 for windows. Normally, the heat-ray-transmission-controllable, light-transmissive base material 42 is disposed on the side of a room interior relative to the light-transmissive base material 41 for windows. Therefore, in the example illustrated in FIG4, it is favorable to fix the heat-ray-transmission-controllable, light-transmissive base material 42 such that the transparent conductive oxide layer is positioned on the side of the other surface 42a opposite to the one surface 42b facing the light-transmissive base material 41 for windows. Also, it is favorable to carry out the fixation such that the light-transmissive insolation-cutting unit is positioned on the side of the one surface 42b facing the light-transmissive base material 41 for windows, among the sides of the heat-ray-transmission-controllable, light-transmissive base material 42.  A heat-ray-transmission-controllable, light-transmissive base material of the present embodiment may include, in addition to a light-transmissive insolation-cutting unit 11 and a transparent conductive oxide layer 12 as in a heat-ray-transmission-controllable, light-transmissive base material 30 illustrated in FIG3, for example, an optical interference layer 31.
cross-sectional view
30
light-transmissive base material No.
12
transparent conductive oxide layer
40
light-transmissive base material unit
['1. A heat-ray-transmission-controllable, light-transmissive base material comprising: a light-transmissive insolation-cutting unit configured to control transmission of light in at least a part of wavelength regions among wavelength regions of visible light and near-infrared light; and a transparent conductive oxide layer disposed over the light-transmissive insolation-cutting unit, containing a transparent conductive oxide.', '8. 8. A light-transmissive base material unit comprising: a light-transmissive base material for a window; and the heat-ray-transmission-controllable, light-transmissive base material as claimed in any one of claims 1 to 7, disposed on one surface of the light-transmissive base material for the window.']