...welcome to the jungle. Hopefully it's already an LED! The fact you're stuck in Asia doesn't help, your external temps are gonna be way too high to efficiently cool with extraction or similar, i'd suggest sourcing some AC, or a room with AC to shoot in, set the bugger to max and let the room cool down as much as possible before you shoot.
Grow lamps have a specific spectrum that focuses on the photons the plants want, called PAR, which encompasses more than just human vision. We like green predominant light, they love blue, red, green, wtvr they can get their greedy chloroplasts round. NOT a photographer, but i would assume a photographic lamp would focus more on lumens than PAR and therefore be more efficient, as regards heat.
Also, if you have a decent reflector you can aim the light better, like wot proper photography lamps have. The lenses on LED grow lamps are kinda tuned for hitting stuff a short distance away, i think they have too much dispersal over a long distances to be efficient enough to not be maxing your heat out with.
If it's not an LED, if it's HPS or CDM, then yeah, lots and lots of silly extraneous heat.
Just my two cents, best of luck...x