An indoor unit for an air conditioning device, the indoor unit comprising: an indoor fan; an indoor heat exchanger arranged to surround the indoor fan; a gas-side pipe coupling the indoor heat exchanger and a gas communication pipe together; and a liquid-side pipe coupling the indoor heat exchanger and a liquid communication pipe together, the indoor unit being provided on a ceiling, wherein the gas-side pipe includes a header body extending vertically along a side end portion of the indoor heat exchanger, a vertical tube portion facing the header body, and a bent tube portion connecting a lower end portion of the header body and a lower end portion of the vertical tube portion together, and part of the liquid-side pipe is provided in a space between the header body, the vertical tube portion, and the bent tube portion, and characterized in that the liquid-side pipe is connected with an expansion valve disposed inside the indoor heat exchanger, and in that the liquid-side pipe is connected with a flow divider body disposed outside the indoor heat exchanger and a liquid relay pipe coupling the flow divider body to the expansion valve, and the liquid relay pipe is disposed above the bent tube portion so as to intersect with the bent tube portion of the gas-side pipe. an indoor fan; an indoor heat exchanger arranged to surround the indoor fan; a gas-side pipe coupling the indoor heat exchanger and a gas communication pipe together; and a liquid-side pipe coupling the indoor heat exchanger and a liquid communication pipe together, the indoor unit being provided on a ceiling, wherein the gas-side pipe includes a header body extending vertically along a side end portion of the indoor heat exchanger, a vertical tube portion facing the header body, and a bent tube portion connecting a lower end portion of the header body and a lower end portion of the vertical tube portion together, and part of the liquid-side pipe is provided in a space between the header body, the vertical tube portion, and the bent tube portion, and characterized in that a header body extending vertically along a side end portion of the indoor heat exchanger, a vertical tube portion facing the header body, and a bent tube portion connecting a lower end portion of the header body and a lower end portion of the vertical tube portion together, and part of the liquid-side pipe is provided in a space between the header body, the vertical tube portion, and the bent tube portion, and characterized in that the liquid-side pipe is connected with an expansion valve disposed inside the indoor heat exchanger, and in that the liquid-side pipe is connected with a flow divider body disposed outside the indoor heat exchanger and a liquid relay pipe coupling the flow divider body to the expansion valve, and the liquid relay pipe is disposed above the bent tube portion so as to intersect with the bent tube portion of the gas-side pipe. a flow divider body disposed outside the indoor heat exchanger and a liquid relay pipe coupling the flow divider body to the expansion valve, and the liquid relay pipe is disposed above the bent tube portion so as to intersect with the bent tube portion of the gas-side pipe.