A windshield for an automobile to which an information acquisition device for acquiring information from the outside of a vehicle by emitting and/or receiving light can be installed, the windshield comprising: an outer glass plate that includes a first side and a second side that is opposite to the first side; an inner glass plate that is arranged opposite to the outer glass plate and has substantially the same shape as the outer glass plate; and an intermediate film that is arranged between the outer glass plate and the inner glass plate, wherein the windshield includes an information acquisition region that is to be located opposite to the information acquisition device and through which the light passes, the intermediate film includes: at least one adhesive layer (32, 33); and a heat generation layer that is supported by the adhesive layer (32, 33), the heat generation layer includes, at least in a region that corresponds to the information acquisition region: a pair of bus bars (312, 313) that are arranged such that the information acquisition region is interposed therebetween; and a plurality of first heating wires that are connected in parallel so as to connect the bus bars (312, 313) to each other, each of the first heating wires has a wire width not larger than 10 pm, the cross-sectional shape of the first heating wires is a trapezoid, and at least in a portion of each of the first heating wires, the wire width of the first heating wire is equal to or larger than a thickness of the first heating wire. an outer glass plate that includes a first side and a second side that is opposite to the first side; an inner glass plate that is arranged opposite to the outer glass plate and has substantially the same shape as the outer glass plate; and an intermediate film that is arranged between the outer glass plate and the inner glass plate, wherein the windshield includes an information acquisition region that is to be located opposite to the information acquisition device and through which the light passes, the intermediate film includes: at least one adhesive layer (32, 33); and a heat generation layer that is supported by the adhesive layer (32, 33), the heat generation layer includes, at least in a region that corresponds to the information acquisition region: a pair of bus bars (312, 313) that are arranged such that the information acquisition region is interposed therebetween; and a plurality of first heating wires that are connected in parallel so as to connect the bus bars (312, 313) to each other, each of the first heating wires has a wire width not larger than 10 pm, the cross-sectional shape of the first heating wires is a trapezoid, and at least in a portion of each of the first heating wires, the wire width of the first heating wire is equal to or larger than a thickness of the first heating wire. at least one adhesive layer (32, 33); and a heat generation layer that is supported by the adhesive layer (32, 33), the heat generation layer includes, at least in a region that corresponds to the information acquisition region: a pair of bus bars (312, 313) that are arranged such that the information acquisition region is interposed therebetween; and a plurality of first heating wires that are connected in parallel so as to connect the bus bars (312, 313) to each other, each of the first heating wires has a wire width not larger than 10 pm, the cross-sectional shape of the first heating wires is a trapezoid, and at least in a portion of each of the first heating wires, the wire width of the first heating wire is equal to or larger than a thickness of the first heating wire. a pair of bus bars (312, 313) that are arranged such that the information acquisition region is interposed therebetween; and a plurality of first heating wires that are connected in parallel so as to connect the bus bars (312, 313) to each other, each of the first heating wires has a wire width not larger than 10 pm, the cross-sectional shape of the first heating wires is a trapezoid, and at least in a portion of each of the first heating wires, the wire width of the first heating wire is equal to or larger than a thickness of the first heating wire.