An object of the present invention is to preventing the propagation of light to improve the display quality of the light emitting device. A light emitting device according to an embodiment has a case, a base member disposed at a front side of the case, a plurality of light emitting elements mounted at the front side of the base member, and a cover covering the light emitting elements. The cover has a light transmissive member integrally covering the plurality of light emitting elements, and a light-blocking member disposed at a front side of the light transmissive member and having openings anterior to the light emitting elements respectively. Further, the light transmissive member has, on its back surface, a back-side rough surface portion in a region different from the region facing the front surfaces of the light emitting elements.

A large format billboard type electronic sign having an anchored mounting structure, comprises at least one structural frame configured to be mounted to from a front side surface of the anchored mounting structure, and the at least one structural frame defines a plurality of structural bay members configured in adjacent columns for receiving and removably supporting therein a corresponding plurality of weatherized display modules; and at least one preformed wiring harness for routing low voltage power within the plurality of structural bay members, wherein the at least one preformed wiring harness is provided with at least one power introduction node to facilitate providing separate power branches for distributing power between adjacent columns of the structural bay members and at least one structural bay locator node to facilitate providing a low voltage power branch to at least an individual one of said plurality of structural bay members.

A dynamic message sign includes a front housing defining a viewing window and an interior. A LED assembly is in the interior for displaying a message within a cone of vision. A louver assembly limits the cone of vision. The dynamic message sign may also include a back frame for supporting the front housing and a bracket for setting the front assembly at an angle with respect to the back frame. The LED assembly can include a plurality of LED pixels arranged in rows and columns. The louver assembly can include a plurality of louver racks, each louver rack extending adjacent to a column of LED pixels.

A video display module comprises a circuit board having a front face, a plurality of light-emitting elements electrically coupled to the front face of the circuit board, and a polymer encapsulating member adhered to the front face of the circuit board, the polymer encapsulating member substantially covering at least a portion of the circuit board and a portion of the plurality of light-emitting elements, the polymer encapsulating member substantially sealing the portion of the circuit board and the portion of the plurality of light-emitting elements.

An electronic sign having at least one sectional sign assembly, the at least one sectional sign assembly having a signage support structure and an associated compound structural frame, wherein the compound structural frame has a unitary structural foam construction with a plurality of display module receiving bays, each configured for removably latching therein a plurality of display modules, the signage support structure and the associated compound structural frame cooperating when secured together to form a natural airflow cooling path extending from the top to the bottom of sectional sign assembly to provide sufficient cooling to the plurality of display modules when removably mounted within their display module receiving bays.

A plurality of LED light sources that are mounted on a front face of a mounting plate are separated from each other respectively being disposed in cells of a partitioning wall. Inner faces of the respective cells are made of a material of low reflectivity. With respect to a normal line direction of the mounting plate, light of the LED light source is viewed, as light being brighter the closer to a back side and darker the closer to a near side on the inner face, in a state of being given gradations by the inner face.

A dynamic message sign includes a front housing defining a viewing window and an interior. A LED assembly is in the interior for displaying a message within a cone of vision. A louver assembly limits the cone of vision. The dynamic message sign may also include a back frame for supporting the front housing and a bracket for setting the front assembly at an angle with respect to the back frame. The LED assembly can include a plurality of LED pixels arranged in rows and columns. The louver assembly can include a plurality of louver racks, each louver rack extending adjacent to a column of LED pixels.

A video display module comprises a circuit board having a front face, a plurality of light-emitting elements electrically coupled to the front face of the circuit board, and a polymer encapsulating member adhered to the front face of the circuit board, the polymer encapsulating member substantially covering at least a portion of the circuit board and a portion of the plurality of light-emitting elements, the polymer encapsulating member substantially sealing the portion of the circuit board and the portion of the plurality of light-emitting elements.

A method of converting an existing signage mounting structure to an electronic sign comprises using an installation kit for providing and installing at least one section sign assembly, loaded with a plurality of display modules and having a power routing system with a plurality of individual power extensions extending from a single node to a plurality of display module receiving bays node receptacles, wherein passageway openings at a rear portion of the at least one sectional sign assembly facilitate replacement of individual ones of said plurality of display modules from a rear side of the sign construction, and coupling said single node to a source of power for completing the conversion.

A shading apparatus with an illumination function is applied to a display panel. The shading apparatus includes a shelter and a color assessment light module. The shelter is disposed on the display panel, and includes a top member, a first lateral member, a second lateral member and a first assembling component. The top member is disposed on an upper side of the display panel. The second lateral member is relative to the first lateral member. The first assembling component is disposed on the top member. The color assessment light module is disposed on the shelter, and includes a supporting component, a second assembling component and an illumination holder. The supporting component includes an accommodating portion, a connecting portion and a positioning portion. The second assembling component is detachably disposed on the accommodating portion and assembled with the first assembling component. The illumination holder is rotatably disposed on the connecting portion.