The invention discloses a luminous element, a backlight module, a liquid crystal display device and lighting equipment, and relates to the field of liquid crystal display device. The structure of the luminous element is capable of improving heat dissipation effect of the luminous element effectively, reducing junction temperature of the luminous element and prolonging service life of the luminous element. The luminous element comprises a printed circuit board, a chip mounted on a first surface of the printed circuit board, a first capsule and a second capsule. The first capsule covers the chip, and the second capsule covers a second surface of the printed circuit board. A first pipeline and a second pipeline extend from two parts of the first capsule, and the first pipeline and the second pipeline are respectively connected with two parts of the second capsule. The first capsule, the first pipeline, the second capsule and the second pipeline are sealed with fluid. The fluid is heated up when the chip is powered on and works, and the fluid flow circularly in the first capsule, the first pipeline, the second capsule and the second pipeline.