Abstract: An electronic equipment includes an air flow control unit that controls an air flow generated by an air blow. The electronic equipment includes an expanding unit that is disposed behind the air flow control unit, includes an additional electronic circuit for an electronic circuit mounted on a main board, which are cooling targets of the air blow, and expands a function of the electronic circuit of the main board. The expanding unit has a hollow structure casing and includes the additional electronic circuit in an inside of the hollow structure casing. The air flow control unit has an opening part to allow the air flow to pass through and a blocking part to block the air flow, and supplies most of the air flow into the inside of the hollow structure casing of the expanding unit by the opening part and the blocking part, the blocking part including a vent.

Abstract: An electronic device includes a housing and a positioning portion. The housing includes a first member secured to the housing and a second member secured to the first member. The positioning portion is configured to position the second member at a predetermined position relative to the first member when the second member is secured to the first member in an assembly process of the electronic device.

Abstract: A cooling duct for cooling heat generating elements inside a casing with outside air includes an intake vent through which outside air taken in from outside the casing is drawn, a guiding unit configured to guide the outside air drawn through the intake vent to a first target element being a heat generating element to be cooled, a discharge vent through which the outside air guided by the guiding unit is discharged to the first target element, and a branch pipe provided in the guiding unit and configured to guide part of the outside air flowing in the guiding unit to a second target element being another heat generating element to be cooled.

Abstract: An electronic equipment includes: air sending unit configured to send, at a front of an inside of a casing, air in a direction from a front surface of the casing to a back surface to cool a heat generating element; air flow control unit that is disposed in the inside of the casing and behind the air sending unit and is for controlling, by a shape, an air flow generated by air blow of the air sending unit; and expanding unit that is disposed in the inside of the casing and behind the air flow control unit, includes an additional electronic circuit for an electronic circuit mounted on a main board, which are the electronic circuits as cooling targets of the air blow of the air sending unit, and is for expanding a function of the electronic circuit of the main board, wherein the expanding unit has a hollow structure casing and includes the additional electronic circuit in an inside of the casing, and the air flow control unit has an opening part for allowing the air flow to pass through and a blocking part to bl

Abstract: An electronic device includes a housing and a positioning portion. The housing includes a first member secured to the housing and a second member secured to the first member. The positioning portion is configured to position the second member at a predetermined position relative to the first member when the second member is secured to the first member in an assembly process of the electronic device.

Abstract: A cooling duct for cooling heat generating elements inside a casing with outside air includes an intake vent through which outside air taken in from outside the casing is drawn, a guiding unit configured to guide the outside air drawn through the intake vent to a first target element being a heat generating element to be cooled, a discharge vent through which the outside air guided by the guiding unit is discharged to the first target element, and a branch pipe provided in the guiding unit and configured to guide part of the outside air flowing in the guiding unit to a second target element being another heat generating element to be cooled.