Address and/or alarm indicator sign
First Claim
1. A sign comprising:
- a) an opaque housing b) a radio frequency receiver for receiving messages, c) a character plate, d) a backlight, and e) a sign control circuit, wherein the character plate has an opaque background surrounding one or more translucent characters, the housing has an aperture for the character plate, the housing enclosing the backlight and the control circuit, the backlight for back-lighting the one or more characters, and the control circuit for activating the backlight in response to messages received by the receiver.
2 Assignments
0 Petitions
Accused Products
Abstract
Sign 1 has frame 13 attaching to base 9 and supporting character plates 4. Casing 11 attaches to frame 13 and holds character plates 4 against frame 13. Light assembly 15 and base 9 backlight character plates 4. Backlight is diffusion chamber 17 sidelit by light assembly 15. Casing 11 hides access to the mount and is not easily removable. Light assembly 15 is externally powered and is activated by external messages and by low ambient light. An Emergency Alarm message causes flashing in one colour and intermittent activation of sound. For non-emergency, alternate light mode is used with constant sound. Transmitter 1501 transmits messages for the sign 1. The transmitter 1501 learns emergency telephone numbers for dial detection on a telephone line, in addition to standard emergency telephone number. Emergency button 1507 can begin transmission of emergency alarm message. Transmitter 1501 may have other alarm inputs.
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Citations
50 Claims
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1. A sign comprising:
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a) an opaque housing b) a radio frequency receiver for receiving messages, c) a character plate, d) a backlight, and e) a sign control circuit, wherein the character plate has an opaque background surrounding one or more translucent characters, the housing has an aperture for the character plate, the housing enclosing the backlight and the control circuit, the backlight for back-lighting the one or more characters, and the control circuit for activating the backlight in response to messages received by the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 47, 49, 50)
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27. A sign comprising:
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a) an opaque housing, b) a character plate, c) a backlight, and d) a sign control circuit, wherein the character plate has an opaque background surrounding one or more translucent characters, the housing having an aperture for the character plate, the housing enclosing the backlight and the control circuit, and the control circuit for activating the backlight when there is low light external to the sign, the backlight for back-lighting the one or more characters, and the backlight comprises a light diffusion chamber and a light assembly with one or more light sources for side-lighting the diffusions chamber, and the housing comprises a base and a frame that form the light diffusion chamber, the base having a reflective face opposite the housing aperture with the light assembly between the base and the plate, the frame surrounding and having the same colour as the plate background, and the frame attached to the base so as not to block light from the light assembly entering the diffusion chamber.
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28. A sign comprising:
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a) an opaque housing, b) a character plate, c) a backlight, and d) a sign control circuit, wherein the character plate has an opaque background surrounding one or more translucent characters, the housing having an aperture for the character plate, the housing enclosing the backlight and the control circuit, and the control circuit for activating the backlight. - View Dependent Claims (29, 30, 31, 32, 48)
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33. A transmitter unit for use with a sign, the transmitter unit comprising:
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a) an alarm detector, b) a radio frequency transmitter circuit, c) a transmitter control circuit, and d) a transmitter housing for housing the transmitter circuit and transmitter control circuit, wherein the transmitter control is for recognizing alarms detected by the alarm detector and sending messages to the transmitter circuit in response to a detected alarm, and the transmitter circuit is for transmitting those messages over radio frequencies. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification