| 摘要 |
<p>A screen is provided for partly shielding the light sensor from light. The screen comprises a sliding strip (5), rotary disc, scratch strip or tear strip. A light sensor (3) measures light intensity, a device is provided for generating an audible alarm, an electronic processor (19) connected to the sensor and alarm generating device is used to activate the alarm after a given time depending on the measured light intensity and a control system is provided for regulating the alarm system. The light sensor comprises a number of solar cells (9, 11, 13, 15, 17). Independent claims are also included for the following: (a) Adhesive label (1) provided with the alarm system; (b) Small plate, e.g. badge, provided with the alarm system; (c) Container, e.g. sun cream bottle, provided with the alarm system; and (d) Container, e.g. sun cream bottle provided with the adhesive label.</p> |
