JP2010097837A - Illumination device with reflux fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device with a reflux fan which cools the illumination means while making whole flow of downward air-flow a smooth one. <P>SOLUTION: The device has a cylindrical case 10, the fan 60, and an illumination means 100. The cylindrical case 10 has an outer cylinder part 20 and an inner cylinder part 40. At the outer cylinder part 20, its upper aperture is used as an air intake 21, a connector part 30 that is connected to a power source connector 501 installed in the center of the ceiling of the air intake 21 is installed, and furthermore, the fan 60 is housed inside thereof. At the inner cylinder part 40, the illumination medium 100 is installed in its inside center, and furthermore, in the space between the inner peripheral face and the illumination means 100, a wind direction plate 120 toward vertical direction is installed. In a state that the upper part of the inner cylinder part 40 is inserted into inside of the lower aperture of the outer cylinder part 20, and by integrally fixing both, an air introduction passage 70 is formed in which the air introduced through an annular gap S1 between the lower aperture of the outer cylinder part 20 and the outer circumference of the inner cylinder part 40 is directly supplied to an exhaust vent side of the fan 60. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting device with a reflux fan in which a fan for indoor air circulation is attached to a lighting device that illuminates a room from the ceiling.

  Conventionally, there are illumination devices such as downlights that illuminate a room from the ceiling. In recent years, a light emitting diode has been used as an illumination device of this type instead of an incandescent lamp or a fluorescent lamp. Light-emitting diodes have lower power consumption and longer life than incandescent lamps and fluorescent lamps, and thus can save energy and are promising as future lighting devices. However, when a light-emitting diode is used in a lighting device, heat is generated, which is not as much as in the case of an incandescent lamp or a fluorescent lamp, and the life of the light-emitting diode may be shortened.

  Conventionally, there is an indoor fan that circulates indoor air by installing a fan on the ceiling and lowering the warmed air near the ceiling near the floor. In this type of indoor blower, for example, as shown in Patent Document 1, the fan is covered with a cylindrical case, and the air blown downward by the fan is made to travel straight as much as possible without diffusing so much. Even if the air volume is small, there is one that reliably blows the blown air to the vicinity of the floor surface, and more effectively eliminates and equalizes the temperature difference between the air in the indoor upper part and the indoor lower part. In order to achieve this object, it is necessary to blow the downward flow of the air generated by the fan from the blowout port at the bottom of the cylindrical case more smoothly and to reach the floor surface more effectively. . However, since the downward air flow generated by the fan is greatly disturbed by the fan, the flow of the entire air flow is not a smooth downward flow in the same direction, so that the blown air efficiently reaches the vicinity of the floor surface. I couldn't. For this reason, in order to reach the blown air to the vicinity of the floor surface, it is necessary to increase the rotation speed of the fan to increase the wind speed of the air, and to use a larger fan motor, increasing the power consumption, There is also a risk that the compactness of the apparatus may be hindered.

On the other hand, there is a fan-equipped lighting device having a structure in which the fan is integrally attached to the lighting device, and lighting and air circulation are performed simultaneously. This type of lighting device with a fan can be used for both indoor lighting and air circulation, so that the installation location can be reduced, the installation work can be simplified, and the light-emitting diode can be air-cooled by a fan. It is. However, when the light emitting diode is air-cooled by the fan, in addition to the air turbulence by the fan described above, air turbulence also occurs due to the air sent from the fan being blown to the light emitting diode, and the air blown out beyond the indoor blower described above. Could not reach the floor surface smoothly.
JP-A-10-267334

  The present invention has been made in view of the above points, and an object of the present invention is to circulate the entire air flow downward while cooling the illuminating means in an illuminating device with a return fan incorporating the illuminating means and the fan. An object of the present invention is to provide a lighting device with a reflux fan that can be made to flow smoothly and that allows the blown air to efficiently reach the vicinity of the floor surface.

  The invention described in claim 1 includes a cylindrical case, a fan that is installed in the cylindrical case and blows out air from an opening provided in a lower surface of the cylindrical case, and recirculates indoor air, and the cylindrical case In the illumination device with a reflux fan installed in the vicinity of the ceiling surface, the cylindrical case includes an outer cylinder part and an inner cylinder having a smaller diameter than the outer cylinder part. The outer cylinder part has an upper opening as an air inlet, a connector part connected to a power connector installed on the ceiling is installed in the center of the air inlet, and the fan is housed inside On the other hand, the inner cylinder part is configured by installing the illumination means in the center of the interior, and further installing a wind direction plate in the vertical direction in the space between the inner peripheral surface and the illumination means, Inside the opening at the bottom of the outer cylinder, above the inner cylinder Air is introduced directly from the ring-shaped gap between the opening at the lower portion of the outer cylindrical portion and the outer periphery of the inner cylindrical portion by directly fixing the two in the inserted state. The illumination device with a reflux fan is characterized in that a path is formed.

  The invention according to claim 2 of the present application is the illumination device with a return fan according to claim 1, wherein the fan has a polygonal shape when viewed from below, and the fan is placed on the upper end side of the inner cylinder portion. In the illumination device with a reflux fan, the air introduction path is formed through the opening portion of the inner cylinder portion protruding from each outer periphery of the fan.

  According to the first aspect of the present invention, the air introduced from the air introduction path formed by using the outer cylinder part and the inner cylinder part is directly discharged from the fan without being turned to the air suction port side of the fan. Since the air flow is supplied to the side, the portion surrounding the outermost periphery of the downward air flow greatly disturbed by the fan can be wrapped in the air flow with almost no turbulence supplied from the air introduction path, and thereby the inside of the inner cylinder portion is lowered. The flow of the entire air flow becomes smooth, and the air flow can be made more linear by the wind direction plate installed in the inner cylinder part. A flow can be made into a smooth flow, and the blown-out air can efficiently reach the vicinity of the floor surface.

  According to the invention described in claim 2 of the present application, the air can be obtained only by a simple configuration in which a commercially available fan having a polygonal shape (mostly a square shape) is used as it is and is installed on the upper end side of the inner cylinder portion. The introduction path can be easily formed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a schematic cross-sectional view of a lighting device 1 with a reflux fan according to an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is a bottom view. As shown in these drawings, in the lighting device 1 with a reflux fan, an outer cylinder portion 20 and an inner cylinder portion 40 constitute a cylindrical case 10, a fan 60 is installed in the outer cylinder portion 20, and the outer cylinder portion 20. The connector part 30 is attached to the upper part of the slab, and the illuminating means 100 is installed in the inner cylinder part 40, and four wind direction plates 120 directed in the vertical direction are provided in the space between the inner peripheral surface of the inner cylinder part 40 and the illuminating means 100. Installed and configured.

  The outer cylinder portion 20 is configured by forming a metal plate or a synthetic resin plate into a cylindrical shape with an open top and bottom, and an air intake port 21 of the upper surface opening is covered with a net 23 made of a metal net or the like, The connector part 30 connected to the power connector 501 (refer FIG. 2) installed in the ceiling 500 (refer FIG. 2) is attached. As shown in FIG. 3, the net 23 is formed by integrating a plurality of ring-shaped thin rod members 23a and a set of four linear thin rod members 23b extending radially from the center, Each distal end portion of the thin rod member 23b is attached to the upper end portion of the outer cylinder portion 20 by a screw 32 and a mounting plate 33. The connector part 30 is a base having the same shape and structure as a light bulb, and is structured to be screwed into a socket that is a power connector 501. A device control unit 31 is attached to the lower part of the connector unit 30 (the lower surface side of the net 23). The device control unit 31 converts a power supply voltage of, for example, AC 100V input from the connector unit 30 into DC 12V, and supplies the converted power to the fan 60 and the illuminating means 100 through lead wires (not shown). A side air intake 25 consisting of a plurality of small circular holes is provided on the upper portion of the outer cylindrical portion 20 at equal intervals around the circumference, and the operating speed and on / off of the fan 60 are controlled on the side of the outer cylindrical portion 20. A fan operation knob 27 is attached. The fan operation knob 27 is connected to the device control unit 31 with a lead wire (not shown), and operates (rotates) to control the power supplied from the device control unit 31 to the fan 60.

  FIG. 5 is a cross-sectional view taken along the line AA in FIG. As shown in FIG. 1 and FIG. 1, the fan 60 is configured by incorporating a propeller-type fan main body 71 and a fan motor 73 for rotationally driving the fan case 61 inside a fan case 61. The upper and lower sides of the fan case 61 are rectangular (square) flat plate portions 63 and 65. A circular air inlet 69 is provided at the center of the upper surface of the fan case 61, and an air inlet 69 is provided at the center of the lower surface. A circular air outlet (not shown) having substantially the same diameter is provided. This fan 60 is a commercially available fan.

  The inner cylinder portion 40 is formed by forming a metal plate or a synthetic resin plate in a cylindrical shape whose upper and lower sides are open and having an outer diameter smaller than the inner diameter of the outer cylinder portion 20, and the upper surface opening is formed from a metal mesh or the like. The illumination means 100 is attached to the center of the mesh 43. Four wind direction plates 120 that are installed in a space between the inner peripheral surface and the illuminating means 100 in the vertical direction are attached to the inner peripheral surface of the inner cylinder portion 40. As shown in FIG. 4, the mesh 43 is formed by integrating a plurality of ring-shaped thin rod members 43a and a set of four linear thin rod members 43b extending radially from the center as shown in FIG. It is configured. The wind direction plate 120 has a thin plate shape, and its plane faces radially outward and in the vertical direction from the central axis of the inner cylinder portion 40 and is installed at equal intervals (90 ° intervals) as viewed from the central axis. The illumination unit 100 includes a substantially cylindrical lamp driving unit 101 and a lamp unit 111 attached to the lower end of the lamp driving unit 101. The lamp unit 111 is detachable from the lamp driving unit 101 and can be replaced. On the lower surface of the lamp unit 111, a plurality of (three) illumination units 113 that radiate light emitted by the LED light emitting unit in the lamp unit 111 to the outside are provided. At four equally spaced positions on the upper end side 40a (see FIG. 5) of the inner cylinder portion 40, there are provided mounting portions 41 that project outward in the form of tongues. The tip of the rod member 43b and the vicinity of the four corners of the fan case 61 are simultaneously attached to the attachment plate 74 attached in the vicinity of the lower end portion of the inner peripheral surface of the outer cylinder portion 20 by a pin 75. Yes. In other words, with the upper part of the inner cylinder part 40 inserted inside the opening at the lower part of the outer cylinder part 20, both are fixed together, and the fan 60 is installed on the upper end side 40 a of the inner cylinder part 40. The fan 60 has a polygonal shape (rectangular shape) when viewed from below (upper). By installing the fan 60 on the upper end side 40a of the inner cylinder portion 40, each outside of the fan 60 is arranged. An air introduction path 70 is formed through an opening portion of the inner cylinder portion 40 that protrudes from the periphery 60a. The air introduction passages 70 are formed at the same four places as the number of the outer peripheries 60a.

  As shown in FIG. 2, the lighting device 1 with the reflux fan configured as described above is attached near the ceiling surface by screwing the connector portion 30 into the power connector 501 installed on the ceiling 500. When the on / off switch for indoor lighting installed indoors or outdoors is turned on, the power supply voltage of AC 100V is supplied to the device control unit 31 through the connector unit 30 and converted to DC 12V, and then the fan 60 and the illumination unit 100 are connected. The illumination unit 100 is turned on at the same time as the fan 60 is driven. When the illumination unit 100 is turned on, light is irradiated downward from the illumination unit 113, and the room is illuminated brightly. At the same time, the fan 60 is driven, and as shown by an arrow in FIG. 1, externally from the air intake 21 at the upper part of the cylindrical case 10 (of the outer cylinder part 20) and the side air intake 25 at the outer peripheral side surface. Air is sucked in and passes through the inside of the fan 60, and then is introduced into the inner cylinder portion 40, passes through the passage between the inner peripheral surface of the inner cylinder portion 40 and the outer peripheral surface of the illumination means 100, and passes therethrough. The lighting means 100 is cooled by air and blown downward from the lower end surface of the inner cylinder portion 40 while suppressing the heat generation.

  On the other hand, in the lighting device 1 with a reflux fan, as described above, since the air introduction path 70 is formed, the air is introduced from the ring-shaped gap S1 between the opening at the lower portion of the outer cylindrical portion 20 and the outer periphery of the inner cylindrical portion 40. The air is sucked directly into the discharge side of the fan 60 by the negative pressure generated by the discharge without being turned to the air suction port 69 side of the fan 60 and is introduced into the inner cylinder portion 40. The air that has passed through the fan 60 is greatly disturbed by the blades of the fan main body 71 and pushed downward, but does not pass through the inside of the fan 60 and is sucked and supplied to the vicinity of the inner peripheral surface of the inner cylinder portion 40 on the discharge side. Air is an air flow with little turbulence. For this reason, the outermost periphery of the downwardly turbulent air flow having a large turbulence is surrounded by the air flow with little turbulence supplied from the air introduction path 70, whereby the flow of the entire air flow descending in the inner cylindrical portion 40. Becomes smooth. Further, the air flow is more linear by the wind direction plate 120 installed in the inner cylinder portion 40. As a result, the entire air flow downward can be made smooth while cooling the illumination means 100, and the blown air can efficiently reach the vicinity of the floor surface. .

  Furthermore, in the case of this embodiment, a commercially available fan 60 having a square outer shape is used as it is, and the air introduction path is simply formed by installing the fan 60 on the upper end side 40a of the inner cylinder portion 40. 70 is formed, the air introduction path 70 can be easily formed, which is preferable.

  Further, in the above lighting device 1 with a reflux fan, meshes 23 and 43 are attached to the upper surface of the outer cylinder part 20 and the upper surface of the inner cylinder part 40, respectively, and using these meshes 23 and 43, the connector part is located at the center. 30 and the illuminating means 100 are attached, so that the connector part 30 and the illuminating means 100 can be easily installed in the center of the outer cylinder part 20 and the inner cylinder part 40, respectively, with a simple configuration. The rotational speed of the fan 60 can be adjusted by rotating the fan operation knob 27.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above-described embodiment, the fan case 61 of the fan 60 has a quadrangular shape when viewed from below (upper), but may be a triangular shape or a polygonal shape of a pentagon or more. Further, as the illuminating means, those using light emitting diodes as in this embodiment are suitable, but other various illuminating means such as fluorescent lamps and incandescent lamps may be used depending on circumstances. The shape and structure of the connector portion 30 can be variously changed, and may be a plug-in connector portion, for example. Various modifications can be made to the structure of the fan 60, and a mixed flow fan or the like may be used instead of the propeller type fan. In the above-described embodiment, the side air intake 25 is provided in the outer cylinder portion 20, but the side air intake 25 may be omitted.

It is a schematic sectional drawing of the illuminating device 1 with a reflux fan. It is a side view of the illuminating device 1 with a reflux fan. It is a top view of the illuminating device 1 with a reflux fan. It is a bottom view of the illuminating device 1 with a reflux fan. It is an AA cross-sectional arrow view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting apparatus 10 with a recirculation | reflux fan Cylindrical case 20 Outer cylinder part 21 Air inlet 25 Side air inlet 30 Connector part 31 Equipment control part 40 Inner cylinder part 40a Upper edge 60 Fan 60a Outer periphery 70 Air introduction path 100 Illuminating means 120 Wind direction plate S1 Ring-shaped gap 501 Power connector

Claims (2)

A cylindrical case, a fan installed in the cylindrical case and blowing out air from an opening provided on the lower surface of the cylindrical case to recirculate indoor air, and an illumination means for indoor lighting installed in the cylindrical case In a lighting device with a reflux fan installed near the ceiling surface,
The cylindrical case has an outer cylinder part and an inner cylinder part having a smaller diameter than the outer cylinder part,
The outer cylinder part is configured with the upper opening as an air intake, a connector part connected to a power connector installed on the ceiling in the center of the air intake, and further containing the fan therein.
On the other hand, the inner cylinder portion is configured by installing the illumination means in the center of the interior, and further installing a wind direction plate directed in the vertical direction in the space between the inner peripheral surface and the illumination means,
In the state where the upper part of the inner cylinder part is inserted inside the opening of the lower part of the outer cylinder part, both are integrally fixed to introduce from the ring-shaped gap between the opening of the lower part of the outer cylinder part and the outer periphery of the inner cylinder part An illuminating apparatus with a reflux fan, characterized in that an air introduction path for supplying air directly to the discharge side of the fan is formed. The lighting device with a reflux fan according to claim 1,
The fan has a polygonal shape when viewed from below, and the air is introduced through the opening portion of the inner cylinder portion protruding from each outer periphery of the fan by installing the fan on the upper end side of the inner cylinder portion. An illumination device with a reflux fan, characterized in that a path is formed.

Images