Abstract: A high-luminous-pattern display apparatus includes a surface luminous plate which includes a transparent planar plate stood vertically to a horizontal direction. The transparent planar plate has a front surface and an opposite rear surface, the rear surface being a light incident surface on which direct sunlight and in-air diffused light falls. The surface luminous plate further includes a group of transparent planoconvex lenses arranged uniformly in columns and rows and integrally molded with the front surface of the transparent planar plate. The columns and rows of planoconvex lenses define a front surface of the surface luminous plate, and a planar display plate having a pattern is arranged at the front surface of the surface luminous plate.

Abstract: An apparatus is provided which produces an alarm signal when the magnitude of a varying physical quantity such as the running speed of an automobile, for example, exceeds one of a plurality of preset threshold values. The apparatus includes detection means having a plurality of detection channels in which mutually different threshold values are defined and capable of producing an electrical output in response to the magnitude of the varying physical quantity exceeding a threshold value in each of the detection channels; selection means for selecting one of the threshold values and for providing an output signal indicative of the selected threshold value; and comparison and control means for comparing the output from the detection means and the output from the selection means to produce an electrical output when the magnitude of the physical quantity exceeds the threshold value selected by the selection means.