An ink jet recording device (10; 110; 132; 160) comprising: a head unit (24; 80; 90; 100; 108; 112; 124; 152; 170; 174; 176; 178; 180; 182; 186; 190; 192) that includes a recording head (50; 240) which ejects ink and a relay adapter (60; 239) which relays an ink accommodating portion (36; 158) where ink is accommodated with the recording head, and is movable in a scanning direction of the recording head; and an ink tube (26; 156; 164) that is connected to the relay adapter, guides ink which is sent from the ink accommodating portion to the relay adapter, and has flexibility, characterised in that: the inkjet recording device further includes a cover portion (20; 140) that covers at least a part of the head unit when the head unit is positioned in an end portion in the scanning direction, wherein a high position with a narrow gap from the cover portion and a low position with a wide gap from the cover portion are formed in an upper portion of an adapter accommodating portion of the head unit where the relay adapter is accommodated, wherein a part of the ink tube extends outside the head unit by using the gap that is formed between the low position of the adapter accommodating portion and the cover portion when the head unit is positioned in the end portion in the scanning direction, and wherein the plurality of ink tubes are arranged in a transverse direction on an upper surface of the cover portion to be fixed to an upper surface of the cover portion. a head unit (24; 80; 90; 100; 108; 112; 124; 152; 170; 174; 176; 178; 180; 182; 186; 190; 192) that includes a recording head (50; 240) which ejects ink and a relay adapter (60; 239) which relays an ink accommodating portion (36; 158) where ink is accommodated with the recording head, and is movable in a scanning direction of the recording head; and an ink tube (26; 156; 164) that is connected to the relay adapter, guides ink which is sent from the ink accommodating portion to the relay adapter, and has flexibility, characterised in that: the inkjet recording device further includes a cover portion (20; 140) that covers at least a part of the head unit when the head unit is positioned in an end portion in the scanning direction, wherein a high position with a narrow gap from the cover portion and a low position with a wide gap from the cover portion are formed in an upper portion of an adapter accommodating portion of the head unit where the relay adapter is accommodated, wherein a part of the ink tube extends outside the head unit by using the gap that is formed between the low position of the adapter accommodating portion and the cover portion when the head unit is positioned in the end portion in the scanning direction, and wherein the plurality of ink tubes are arranged in a transverse direction on an upper surface of the cover portion to be fixed to an upper surface of the cover portion. the inkjet recording device further includes a cover portion (20; 140) that covers at least a part of the head unit when the head unit is positioned in an end portion in the scanning direction, wherein a high position with a narrow gap from the cover portion and a low position with a wide gap from the cover portion are formed in an upper portion of an adapter accommodating portion of the head unit where the relay adapter is accommodated, wherein a part of the ink tube extends outside the head unit by using the gap that is formed between the low position of the adapter accommodating portion and the cover portion when the head unit is positioned in the end portion in the scanning direction, and