Embodiments of the present invention relate to integrated modular LED display devices. In one embodiment, a modular LED display devices comprises a plastic housing with an outer surface exposed to an external environment. The modular LED display device is configured to display images using an array of pixels attached to a front side of a printed circuit board attached to the plastic housing. The modular LED display device includes a circuit for controlling a plurality of LEDs, the circuit being attached to the opposite second side of the printed circuit board. The first side of the printed circuit board is sealed to be waterproof by an overlying compound. The modular LED display device further includes a power supply including a power converter for converting alternating current (AC) power to direct current (DC) power. The modular LED display device is configured to be exposed to the external environment without additional enclosures.