JPH0124510Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a hot air heater unit that is attached to an electric kotatsu.

(B) Prior art A heater unit attached to an electric kotatsu is composed of a top plate, a reflector, one or more heaters provided on the lower surface of the reflector, and a guard provided below the heater. ing. A heat shield plate is installed at the bottom of the heater in order to lower the temperature of the guard and uniformly heat the bottom part of the unit by radiation, but this heat shield plate is designed to cover only the bottom part of the heater. As a result, the infrared rays leaking from the outer edge of the heat shield directly entered the eyes, which was undesirable. Furthermore, the heat radiated from this edge raised the temperature of the guard, posing a risk of burns.

As a structure to improve this drawback, it is conceivable to extend the outer edge of the heat shield plate upward,
In the hot air type, this extended portion obstructs the hot air from flowing out, making it impossible to uniformly discharge hot air.

(c) Purpose of the invention The purpose of the invention is to make the heat shield plate have a special shape so that it can block the light of the heater without obstructing the outflow of hot air.

(d) Structure of the device The device of the present invention extends horizontally to the outer edge of a U-shaped heat shield placed at a predetermined distance below the heater, and between it and the guide surface of the reflector. The structure is such that the light shielding piece with a gap is formed by bending.

(e) Examples An embodiment of the present invention will be described based on the drawings.

1 is a wooden top plate; 2 is a reflector provided at the bottom of the top plate 1 and has a downwardly inclined guide surface 3 on the periphery; 4 is a motor fixed to the center of the lower surface of the reflector 2; , a flat fan 5 disposed close to the lower surface of the reflector plate 2 is driven to rotate. 6 is a mounting bracket for fixing the motor 4; 7, 7 is a rod-shaped infrared heater located on both sides of the motor 4 and fixed to the lower part of the reflector 2 in a parallel manner;
Reference numerals 8, 8 denote approximately U-shaped heat shield plates disposed below the infrared heaters 7, 7 with a predetermined interval H, H, and a mounting piece 9 extending upward is provided on the inner edge, and a mounting piece 9 extending upward is provided on the inner edge. Light-shielding pieces 10, 10, which extend horizontally and are bent, are provided on the edges of the lamp, and a plurality of radiation holes 11, 11, . . . are bored in the bottom. This light shielding piece 1
An appropriate gap 1 is formed between the tips of 0 and 10 and the guide surface 3 of the reflecting plate 2. Reference numeral 12 denotes a grid-shaped protective guard provided at the bottom of the infrared heaters 7, 7, motor 4, heat shield plates 8, 8, reflector 2, etc.;
3 is a fixing frame that fixes the edges of the top plate 1, the reflector 2, and the protective guard 12.

Therefore, the motor 4 and the infrared heaters 7, 7
When the power is applied to the heater, the hot air near the heater is transferred to the fan 5.
As a result, as shown by the thick arrow in FIG. 2, the gas is discharged from above the heat shield plate 8 along the guide surface 3, through the gap l, through the protective guard 12, and into the kotatsu. The radiant heat of the infrared heaters 7, 7 that is directly radiated downward passes through the radiant holes 11, 11, . . . as indicated by the broken line arrow A in FIG. The light radiating upward hits the reflecting plate 2 and is reflected as indicated by the broken line arrow B in FIG. 2, but the reflected light hits the light shielding piece 10 and prevents it from being radiated to the lower peripheral side of the unit. To prevent this radiation, protective guard 12
suppress the temperature rise near the X point.

(f) Effect of the invention As described above, the present invention includes a reflector having a downwardly inclined guide surface on its periphery, and a rotating fan located at the center of the lower surface of the reflector and placed close to the reflector. A driving motor, an infrared heater located on both sides of the motor and provided below the reflector, and a U-shaped heat shield plate disposed below the infrared heater at a predetermined interval. and a protective guard provided at the bottom, and a light shielding piece is formed by bending the outer edge of the heat shield plate to extend horizontally and leaving a gap between it and the guide surface of the reflector plate. Because of this, the radiant heat leaking from between the infrared heater and the reflector is blocked by the light-shielding piece of the heat shield, so it does not directly enter the eyes and prevents the temperature rise of the protective guard, preventing the risk of burns. prevent. Furthermore, since a gap is provided between the light shielding piece and the guide surface of the reflector, the hot air passes through the gap without any obstruction and is discharged through the protective guard.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the hot air heater unit of the present invention, FIG. 2 is a sectional view of the main part, and FIG. 3 is a partial perspective view of the heat shield plate. 2...Reflector, 3...Guide surface, 4...Motor, 5...Fan, 7,7...Infrared heater,
8, 8... Heat shield plate, 10, 10... Light shielding piece, 12
...protective guard, H...predetermined interval, l...gap.

Claims (1)

[Scope of utility model registration request] a reflector having a downwardly inclined guide surface on its periphery; a motor provided at the center of the lower surface of the reflector for rotationally driving a fan disposed close to the reflector; The heat shield includes an infrared heater provided under the reflector, a U-shaped heat shield provided below the infrared heater at a predetermined interval, and a protective guard provided at the bottom of each. 1. A hot air heater unit characterized in that a light shielding piece is formed by extending the outer edge of the plate in a horizontal direction and forming a light shielding piece by bending it with a gap between it and the guide surface of the reflecting plate.