The invention relates to the field of liquid crystal optical display heads. The invention is a liquid crystal optical display head comprising a casing (1) in which there are one or more lamps (6), one or more covers (7) surrounding the lamp or lamps (6) and at least one heat sink (8), the heat sink (8) being made as one piece from a heat conducting material and directly connecting the cover or covers (7) to the outside of the casing (1). The invention may especially be applied to liquid crystal optical display heads mounted on an aircraft instrument panel.