An exterior lamp for an aircraft including a housing defining an interior volume, a heat source disposed within the interior volume of the housing, a light source disposed within the housing configured to emit a light therefrom, a protective lens coupled to the housing proximate the light source, wherein the protective lens is configured to transmit the light, and a capillary transport apparatus having a first end and a second end wherein the first end is coupled to the heat source and the second end is disposed in a catchment basin.

An exterior lamp for an aircraft including a housing defining an interior volume, a heat source disposed within the interior volume of the housing, a light source disposed within the housing configured to emit a light therefrom, a protective lens coupled to the housing proximate the light source, wherein the protective lens is configured to transmit the light, and a capillary transport apparatus having a first end and a second end wherein the first end is coupled to the heat source and the second end is disposed in a catchment basin.

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 an intensity 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.

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 an intensity 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.

An exterior lamp for an aircraft including a housing defining an interior volume, a heat source disposed within the interior volume of the housing, a light source disposed within the housing configured to emit a light therefrom, a protective lens coupled to the housing proximate the light source, wherein the protective lens is configured to transmit the light, and a capillary transport apparatus having a first end and a second end wherein the first end is coupled to the heat source and the second end is disposed in a catchment basin.

An exterior lamp for an aircraft including a housing defining an interior volume, a heat source disposed within the interior volume of the housing, a light source disposed within the housing configured to emit a light therefrom, a protective lens coupled to the housing proximate the light source, wherein the protective lens is configured to transmit the light, and a capillary transport apparatus having a first end and a second end wherein the first end is coupled to the heat source and the second end is disposed in a catchment basin.

Systems and methods for lighting system lens heating are described. The systems and methods include a substantially clear thermoplastic substrate; and a conductive ink or film circuit on the thermoplastic substrate.

Systems and methods for lighting system lens heating are described. The systems and methods include a substantially clear thermoplastic substrate; and a conductive ink or film circuit on the thermoplastic substrate.

A vehicle lamp includes a housing including a compartment having an opening. A reflective unit and a lighting unit are mounted in the compartment. The lighting unit includes a first circuit board and a first LED. A lens is mounted to a front end of the housing and covers the opening of the compartment. The reflective unit reflects light rays from the first LED to transmit through the lens. A heating unit includes a substrate made of a light transmittable material and a heating layer disposed on the substrate. A sensor is mounted in the compartment for detecting temperature. When the detected temperature is lower than a first predetermined temperature, the heating layer is activated to proceed with an electrical heating operation. When the detected temperature is higher than a second predetermined temperature, the electrical heating operation of the heating layer is stopped or gradually reduced.

A vehicle lamp includes a housing including a compartment having an opening. A reflective unit and a lighting unit are mounted in the compartment. The lighting unit includes a first circuit board and a first LED. A lens is mounted to a front end of the housing and covers the opening of the compartment. The reflective unit reflects light rays from the first LED to transmit through the lens. A heating unit includes a substrate made of a light transmittable material and a heating layer disposed on the substrate. A sensor is mounted in the compartment for detecting temperature. When the detected temperature is lower than a first predetermined temperature, the heating layer is activated to proceed with an electrical heating operation. When the detected temperature is higher than a second predetermined temperature, the electrical heating operation of the heating layer is stopped or gradually reduced.