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Semi-transparent sign temperature protection

一种半透明、标志的技术，应用在半透明标志领域，能够解决不太适合户外应用等问题

Active Publication Date: 2020-10-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The display stops working when the ambient conditions are too hot or too cold, making it less suitable for outdoor applications

Method used

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  • Semi-transparent sign temperature protection
  • Semi-transparent sign temperature protection
  • Semi-transparent sign temperature protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] Various embodiments generally provide a translucent flag that protects the functionality of an embedded reflective display (eg, an electrophoretic display) from extreme temperatures while maintaining the overall translucency of the display. Translucent signs can provide the reflective display with the heat it needs for winter functionality when the ambient temperature is too cold for the reflective display to operate. Translucent signs can also be provided with a heat reflective and / or absorbing layer (e.g., an infrared reflective coated glass layer) to reduce the amount of solar energy reaching the reflective device to a low percentage (e.g., as low as 15% to 12 %). The term translucent may mean that at least 50% of incident light is transmitted. A transparent heat dissipation layer may be included in the translucent sign to manage thermal energy passing through the thermal layer. In various embodiments, the term transparent may mean transmitting at least 70% of inci...

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PUM

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Abstract

The invention relates to semi-transparent temperature protection. A semi-transparent sign includes a reflective display, multiple layers and a control circuit. The reflective display may be semi-transparent, have a first side subject to a thermal load, have a second side opposite the first side, and configured to generate a plurality of visible images. A heat sink layer may be attached to the first side, be transparent, and configured to carry heat energy away from the reflective display. The thermal layer may be attached to the heat sink layer, be semi-transparent, and configured to reduce anintensity of the thermal load reaching the reflective display. The warming layer may be attached to the second side, be transparent, and configured to heat the reflective display in response to an electric current. The control circuit may be configured to control the electric current to the warming layer based on a temperature signal indicating a temperature of the semi-transparent sign.

Description

technical field [0001] The present invention relates to translucent signs and methods for thermally protecting translucent signs. Background technique [0002] Displays based on diodes that emit light are commonly used in outdoor signage, such as cars and billboards. Displays based on diodes that emit light provide high visibility due to the variety of colors and brightness that can be produced. However, automotive standards limit the amount of emitted light that such vehicle-based displays can emit to avoid distracting drivers at night. Non-emissive displays are typically used in controlled environments. Such displays cease to function when the ambient conditions are too hot or too cold, and are therefore less suitable for outdoor applications. Contents of the invention [0003] A semi-transparent flag is provided. Translucent signs typically include reflective displays, heat dissipation layers, thermal layers, warming layers, and control circuitry. The reflective di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/37H05K7/20
CPCG09F9/37H05K7/20954B60Q1/5037G09F9/372G09F21/04G01K13/00B60Q1/50F21V29/505F21V29/70F21V29/508F21V29/90B60R1/001B60R11/0235B60R11/0264G01K1/14G09F13/10G09F13/044
Inventor J.P.莫罗R.江
Owner GM GLOBAL TECH OPERATIONS LLC