JP5545685B2 - Lighting device and lighting system - Google Patents

Description

  The present invention relates to a lighting device including a light source and a heat radiating member that dissipates heat from the light source, and a lighting system including the lighting device.

  In recent years, light production by lighting has been gaining popularity in exhibitions, show windows, and ordinary homes. Although it is an illuminating device which produces this light effect, the light source provided in the illuminating device emits light and also emits heat. If the heat generated from the light source is insufficiently dissipated, the lighting device may be damaged or abnormal due to the heat. Also, when adjusting the irradiation direction of the illuminating device, the illuminating device is hot and may not touch or may be inadvertently touched, resulting in burns. For this reason, conventionally, an illuminating device including a heat radiating member that dissipates heat from a light source has been proposed (see, for example, Patent Document 1), and attempts have been made to improve the heat radiating effect by devising the shape and material of the heat radiating member. There are various.

  By devising the shape and material of the heat radiating member, the heat radiating effect of the heat radiating member can be enhanced to some extent. It is unavoidable to increase the size of the lighting device, which leads to an increase in the size of the lighting device.

JP 2006-236996 A

  However, in the first place, the lighting device that produces the light can not be the main role of the device itself, the main role is what the lighting device irradiates, or the irradiated light, and the smaller the lighting device is, the less noticeable it is Also, the more stylish the design, the better it can be seen as part of the design on the spot. Now that light production has become more popular, it is becoming increasingly desirable to produce effective light with a small and stylish lighting device. In addition, when the lighting device is enlarged, it becomes difficult to carry and install the lighting device and to adjust the installed lighting device.

  In view of the above-described problems, an object of the present invention is to provide an illumination device that can provide a small and stylish design and has an excellent heat dissipation effect, and an illumination system including the illumination device.

The lighting device of the present invention that solves the above-described object is
A cylindrical casing;
A light source disposed on a tip side of the casing;
A fan unit having a fan, which is detachably attached to the rear end opening of the casing;
A heat dissipation member housed between the light source and the fan to dissipate heat from the light source,
The heat dissipation member is characterized in that the axial length is longer than the radial length.
Further, the fan unit may be arranged between a rear end side opening of the casing and a position separated by a distance shorter than a length of the heat radiating member in the axial direction.
The heat radiating member may be removable from the casing.
Furthermore, a cylindrical casing,
A light source disposed on the tip side of the casing;
A fan disposed on the rear end side of the casing;
A heat dissipating member housed between the light source and the fan in the casing and dissipating heat from the light source;
The casing may be an illuminating device having an opening connected to the fan on a rear end surface .

Here, the casing may be a cylindrical body or a polygonal cylindrical body.
The light source may be a halogen lamp, an HID lamp, or a light emitting diode. Further, the opening may be one in which the entire rear end surface of the casing is opened, or one in which a part of the rear end surface is opened.

  According to the lighting device of the present invention, since the fan is provided, the heat generated by the light source can be efficiently dissipated from the device without relying only on the heat radiating member, with the help of the fan. Can be dissipated. For this reason, the heat dissipation member can be reduced in size, the entire apparatus can be reduced in size, and a stylish design can be applied.

In the lighting device of the present invention, the casing is made of metal,
It is preferable that the heat radiating member is housed in the casing in contact with the inner peripheral wall of the casing.

  Here, the heat radiating member may have a plurality of fin portions and be accommodated in the casing in a state where the tips of the fin portions are in contact with the inner peripheral wall of the casing.

  By carrying out like this, the said casing itself will also act on heat dissipation, and the illuminating device which was further excellent in the heat dissipation effect can be provided.

In the lighting device of the present invention, the casing has an air intake port,
An aspect in which the heat dissipation member is formed with a flow path through which air that has entered from the air intake port flows to the rear end side is also preferable.

  The air intake may be provided on the front end surface of the casing, or may be provided in the vicinity of the front end portion of the heat radiating member on the casing peripheral surface.

  According to this aspect, the air flow path is formed in the casing, and the heat generated by the light source is efficiently released to the outside by the air flowing through the flow path.

  Further, in the lighting device of the present invention, the casing has the same or substantially the same diameter at the front end portion and the rear end portion, and the axial length is longer than the radial length at the front end portion. It is also preferable.

  The axial direction here is a direction connecting the front end and the rear end of the casing, and the radial direction is a direction orthogonal to the axial direction. For example, when the casing is a quadrangular cylinder, the length in the radial direction of the front end portion and the rear end portion is a diagonal length. In other words, the casing only has to be longer in the axial direction than the length of the longest diameter in the tip portion.

  In this way, by providing a characteristic in the shape of the casing, it is possible to provide a more inconspicuous and more stylish lighting device. In addition, such a long and narrow shape makes it difficult for heat to be trapped inside the apparatus, improving the heat dissipation effect.

  In the lighting device of the present invention, it is also preferable that the heat dissipating member is removable from the casing.

  Here, the fan may be detachable from the casing, and by removing the fan, the heat radiating member may be taken out from the casing. It is possible to remove the light source from the casing, and it is possible to remove the light source from the casing.

  According to this aspect, the maintenance of the lighting device is facilitated. When the lighting device is used for a long period of time, the air intake is blocked by dust or the like, the opening area becomes small, and the flow of air hardly occurs in the casing, so that the heat dissipation effect may be lowered. In addition, when the heat dissipation member is clogged with dust or the like, the heat dissipation effect may be reduced. According to the said aspect, since the said heat radiating member can be taken out from the inside of a casing, dust etc. can be easily removed from a heat radiating member. Further, if air is blown into the casing from which the heat radiating member has been taken out, the dust adhering to the inner peripheral wall of the casing and the dust closing the air intake port can be easily blown away, facilitating maintenance.

Furthermore, in the illuminating device of the present invention, a lens is provided on the tip side of the light source,
The lens is fixed to the casing by a translucent fixing member that transmits light from the light source,
It is also preferable that the fixing member is visible from the outside of the casing.

  Here, the fixing member may be a transparent screw whose head is exposed from the casing.

  The translucent fixing member emits light when the light source emits light, and functions as a light emission / non-light emission confirmation member. When working from the rear of the lighting device to install or adjust the lighting device, it may be difficult to check whether the lighting device is emitting light or not, but with this translucent fixing member Thus, it can be easily confirmed whether or not the lighting device emits light. Moreover, the translucent fixing member is excellent in design.

  Note that the fixing member may fix the lens to the casing in a state where the fixing member bites into a peripheral portion of the lens.

  Furthermore, it is preferable that the lighting device of the present invention further includes a lens attached to the casing so that the axial attachment position of the casing can be changed on the front end side of the casing.

  That is, the lens can be attached to the casing by changing the axial attachment position of the casing. By doing so, the illuminance of the irradiated light can be easily adjusted.

The lighting system of the present invention that solves the above-described object includes the lighting device of the present invention,
A stay for attaching the lighting device to a fixed object;
The stay includes a support portion that rotatably supports the lighting device with the radial direction of the casing as a rotation axis, and a support portion that supports the lighting device so as to be rotatable around an axis of the lighting device. A pipe member connected to the part, and an attachment part for attaching the pipe member to the fixed object so as not to rotate around the axis,
The pipe member houses a power supply line that supplies power to the light source and the fan,
It has a rotation prevention part which prevents that the said illuminating device supported by the said support part rotates exceeding a predetermined angle around an axis | shaft.

According to the lighting system of the present invention, since the lighting system of the present invention is provided, it is possible to provide a lighting system that can provide a small and stylish design and has an excellent heat dissipation effect. Further, in the illumination system of the present invention, since the rotation of the illumination device with the radial direction as the rotation axis and the rotation around the axis are allowed, the irradiation direction of the illumination device can be freely adjusted. Moreover, since having the Rotation preventing portion, the lighting device by unnecessarily rotated about an axis that said power supply line resulting in twisting is prevented.

  Here, the support part may be made of metal. The fixing portion may include a control circuit that controls the light source, but the control circuit is housed between the heat dissipation member and the fan in the casing. May be.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which can give a small and stylish design and was excellent in the thermal radiation effect, and the illuminating system which has the illuminating device can be provided.

(A) is the figure which shows one Embodiment of the illumination system of this invention from upper direction, (b) is the figure which looked at the attaching part shown to (a) from the side. (A) is a figure which shows the illuminating device shown in FIG. 1, (b) is the figure which looked at the heat sink with which the illuminating device shown in (a) is provided from the axial direction rear end side, (c) is (a). It is the figure which looked at the illuminating device shown to from the front end side. It is a figure which shows typically a mode that the illumination system shown in FIG. 1 was seen from the rear end side. (A) is a figure which shows the 1st modification of the illuminating device shown to Fig.2 (a), (b) is the figure which looked at the heat sink with which the illuminating device shown to (a) is provided from the axial direction rear end side. . (A) is a figure which shows the 2nd modification of the illuminating device shown to Fig.2 (a), (b) is the figure which looked at the illuminating device shown to Fig.5 (a) from the axial direction front end side.

  Hereinafter, an embodiment of an illumination system of the present invention will be described with reference to the drawings.

  Fig.1 (a) is a figure which shows one Embodiment of the illumination system of this invention from upper direction.

  A lighting system 10 shown in FIG. 1A includes a lighting device 11 corresponding to an embodiment of the lighting device of the present invention, and a stay 12 that attaches the lighting device 11 to a wall 90 or the like that is a fixed object. Here, the illuminating device 11 has an elongated cylindrical shape that irradiates an exhibit spot-wise at an exhibition or the like. The illuminating device 11 shown to Fig.1 (a) is shown in the state seen through so that an internal structure could be understood. The illumination device 11 includes a cylindrical casing 111, a light source 112, a heat sink 113 as a heat radiating member, and a fan unit 114 in which an electric fan is incorporated. The light source 112 is provided with a plurality of chip-type light emitting diodes on a substrate. The light source 112 is disposed on the distal end side of the cylindrical casing 111. The fan unit 114 includes a fan (not shown) and a motor that rotationally drives the fan. The fan unit 114 is disposed on the rear end side of the casing 111 in a state of being fitted into the rear end opening of the casing 111. ing. In Fig.1 (a), as for the illuminating device 11, the front end side has faced the wall side 90 (left side in FIG. 1 (a)).

  The stay 12 shown in FIG. 1A includes a U-shaped support part 121, a long pipe member 122, and an attachment part 123 fixed to the wall 90. These support part 121, pipe member 122, and attachment part 123 are all made of metal.

  The U-shaped support part 121 supports the illumination device 11 so as to sandwich the peripheral surface 111 a of the cylindrical casing 111. The support portion 121 rotatably supports the lighting device 11 with the radial direction of the casing 111 as a rotation axis (see the dotted line L in the figure). The illuminating device 11 shown in FIG. 1 (a) rotates in the direction perpendicular to the paper surface around the rotation axis. In FIG. 1A, the axial direction of the casing 111 is the left-right direction in the figure, and the radial direction of the casing 111 is a direction orthogonal to the axial direction (for example, the vertical direction in the figure). Further, the support portion 121 is provided with an engagement piece 1211, which will be described later.

  The pipe member 122 is a long object that is several tens of centimeters although the middle is not shown in FIG. The pipe member 122 can be replaced with one having a different length. The pipe member 122 is configured such that a support portion 121 that supports the lighting device 11 is connected to be rotatable around the axis of the lighting device 11. The pipe member 122 includes a rotation prevention unit 1221. The rotation prevention unit 1221 will be described later. The pipe member 122 accommodates electric wires such as a power supply line for supplying power to the light source 112 and the fan unit 114 and a signal line for transmitting a control signal. This electric wire is also shown in FIG. In FIG.

  FIG.1 (b) is the figure which looked at the attaching part shown to Fig.1 (a) from the side.

  The mounting portion 123 includes a locking piece 1231 that locks in the groove 91 of the wall 90 and a base portion 1232 in which a control circuit that controls the light source 112 is built. The locking piece 1231 is fixed to the wall 90 by screws 1231a, the mounting portion 123 is fixed to the wall 90 by locking the locking piece 1231 to the groove 91 and screwing, and the lighting system 10 is mounted to the wall 90. .

  Fig.2 (a) is a figure which shows the illuminating device shown in FIG.

  In FIG. 2A, the illumination device 11 is shown in a transparent state so that the internal structure can be seen. The front end side is the left side of the drawing, and the rear end side is the right side of the drawing. 2A, the axial direction of the casing 111 is the left-right direction in the figure, and the radial direction of the casing 111 is a direction orthogonal to the axial direction (for example, the up-down direction in the figure).

  The casing 111 is made of metal, and the diameter of the front end portion and the diameter of the rear end portion are the same. The axial length is longer than the radial length at the tip. As a specific example of the casing 111, for example, an elongated straight tube having a diameter of 60 mm or more and 80 mm or less and an axial length of 1.5 to 2.5 times the radial length is given. . The shape of the casing is not limited to the shape described here.

  The light source 112 has a plurality of chip-type light emitting diodes, that is, planar light emitting diodes, but the light emitting diodes may be bullet-shaped. An electric wire (not shown) is connected to the substrate of the light source 112.

  FIG.2 (b) is the figure which looked at the heat sink with which the illuminating device shown to Fig.2 (a) is provided from the axial direction rear end side.

  The heat sink 113 shown in FIG. 2B is a metal one that is accommodated between the light source 112 and the fan unit 114 in the casing 111 and extends in the axial direction of the casing 111. The heat sink 113 is detachably fixed to the peripheral surface 111a of the casing 111 by bolts (not shown), and extends radially from the peripheral surface of the columnar base 1131 and the peripheral surface of the base 1131 in the circumferential direction. A plurality of fins 1132. A through hole 1131a is formed in the axial direction of the base portion 1131 in the axial direction to reduce the weight. 2B shows the rear end surface of the heat sink 113, a bolt hole is formed in the front end surface of the base 1131. The light source 112 is bolted to the distal end surface of the base portion 1131 using the bolt hole, and the heat generated from the light source 112 is directly transmitted to the heat sink 113. An electric wire (not shown) connected to the substrate of the light source 112 extends to the rear end side through the through hole 1131a.

  The tips of the plurality of fins 1132 are in contact with the inner peripheral surface of the metal casing 111. For this reason, the heat generated from the light source 112 is transmitted to the casing 111 via the heat sink 113 and efficiently dissipated to the outside. Note that the heat sink 113 is not necessarily in contact with the inner peripheral surface of the casing 111. As shown in FIG. 2A, a space S is provided between the heat sink 113 and the fan unit 114, and a control circuit for controlling the light source 112 may be disposed in the space S.

  In addition, as illustrated in FIG. 2A, the illumination device 11 according to the present embodiment includes an optical unit 115 on the tip side of the light source 112. The optical unit 115 includes a cylindrical frame 1150, a circular transparent resin plate 1151, and a circular lens 1152 having the same size as the circular transparent resin plate 1151. The circular transparent resin plate 1151 is made of an acrylic resin that is fixedly arranged so as to close the tip opening of the cylindrical frame 1150, and prevents the lens 1152 from being damaged. The circular lens 1152 is fixedly disposed in contact with the transparent resin plate 1151 so as to overlap from the rear side. The lens 1152 is a flat lens having a predetermined light collection characteristic. As a method for attaching the lens 1152 to the frame 1150, for example, an enamel screw is preferably used to insert the screw so that the edge of the lens 1152 is slightly crushed to prevent the lens from rattling. Note that the transparent resin plate 1151 and the lens 1152 may be bonded and integrated, or may be separate.

The optical unit 115 can be attached to the casing 111 by changing the axial attachment position of the casing 111. That is, the casing 111 is formed with mounting grooves 1153 extending in the axial direction at intervals of 90 degrees in the circumferential direction.
A screw hole is provided in the frame 1150 of the optical unit 115. The attachment groove 1153 includes a first engagement portion 1153a on the front end side, a third engagement portion 1153c on the rear end side, and a second engagement portion 1153b intermediate between the first engagement portion 1153a and the third engagement portion 1153c. Have. The optical unit 115 is screwed to the casing 111, and the axial direction of the optical unit 115 is obtained by inserting a screw into any one of the first engaging portions 1153a to the third engaging portions 1153c. The position of is determined. In the illumination device 11 illustrated in FIG. 2A, a state in which the screw 1154 is inserted into the intermediate second engaging portion 1153 b and the optical unit 115 is fixed to the casing 111 is illustrated. Here, when the screw 1154 is inserted into the first engaging portion 1153 a on the distal end side, the optical unit 115 moves forward most, and the distal end of the optical unit 115 protrudes from the distal end of the casing 111. In this state, the distance between the light source 112 and the lens 1152 is the longest, the light emitted from the light source 112 is most condensed by the lens 1152, and the illuminance of the light is the highest. On the other hand, when the screw 1154 is inserted into the third engagement portion 1153 c on the rear end side, the optical unit 115 is most retracted, and the tip of the optical unit 115 is in a state of being lowered rearward from the tip of the casing 111. In this state, the distance between the light source 112 and the lens 1152 is the shortest, the light emitted from the light source 112 is most diffused by the lens 1152, and the illuminance of the light is the lowest. As shown in FIG. 2A, when the screw 1154 is inserted into the second engagement portion 1153b, the tip of the optical unit 115 and the tip of the casing 111 are aligned, and the distance between the light source 112 and the lens 1152 is the longest and shortest. The illuminance of the light emitted from the light source 112 is just between the maximum and the minimum. Therefore, in the illuminating device 11 of this embodiment, the lens 1152 is attached to the casing 111 so that the axial attachment position of the casing 111 can be changed on the front end side of the casing 111. In this embodiment, the switching is performed in three stages. However, switching in four or more stages may be performed, switching in two stages may be performed, and the mounting groove extending in the axial direction without providing an engaging portion. It may be possible to perform stepless continuous adjustment of the mounting position by screwing at an arbitrary position 1153.

  In this way, the optical unit 115 is screwed to the casing 111 by adjusting the position in the axial direction from the relationship between the illuminance or the irradiation range, but the screwing is performed at four places in the circumferential direction. The heads of the respective screws are exposed from the casing 111 and are visible from the outside. On the other hand, the tip of each screw on the side opposite to the head penetrates through the cylindrical frame 1150 and reaches the same position as the inner peripheral wall of the frame 1150 of the optical unit 115. In FIG. 2A, three screws 1154 to 1156 are shown, but at least one of the four screws should be made of a translucent material (for example, transparent acrylic resin). Thus, when the light source 112 emits light, a screw made of a light-transmitting material will shine. In the present embodiment, the upper screw 1155 and the lower screw 1156 are transparent screws made of a translucent material, and function as a light emission / non-light emission confirmation member of the light source 112. When working from behind the lighting device 11 to install or adjust the lighting device 11, it may be difficult to check whether the lighting device 11 emits light, but from a translucent material By providing the transparent screws 1155 and 1156, it can be easily confirmed whether or not the lighting device 11 is emitting light. Further, the transparent screws 1155 and 1156 are excellent in design. The left and right screws 1154 are metal screws in order to increase the fixing strength.

  FIG.2 (c) is the figure which looked at the illuminating device shown to Fig.2 (a) from the front end side.

  FIG. 2C shows a state where the optical unit 115 is screwed to the casing 111 at four positions. The diameter of the optical unit 115 is smaller than the diameter of the casing 111, and an annular gap is formed between the casing 111 and the optical unit 115, and this gap becomes the air intake H1. That is, in the illuminating device 11 shown to Fig.2 (a), the air inlet H1 is provided in the front end surface of the cylindrical casing 111. As shown in FIG.

  The fan unit 114 is inserted into the casing 111 from the opening at the rear end side of the casing 111, and is removably fixed to the peripheral surface 111 a of the casing 111 with bolts 1141. As shown in FIG. 2 (a), an L-shaped groove 1141a is provided at the rear end of the peripheral surface 111a of the casing 111, and the fan unit 114 and the casing 111 are relatively shifted in the circumferential direction. The unit 114 is detached. An opening H <b> 2 is also provided at the rear end of the fan unit 114, and the opening H <b> 2 of the fan unit 114 integrated with the casing 111 corresponds to an opening provided on the rear end surface of the casing 111 and connected to the fan. In FIG. 2A, the rear end fan rotates, air is taken in from the front air intake port H1, passes through between the fin 1132 and the fin 1132 adjacent to each other in the circumferential direction of the heat sink 113, and A state in which air is released from the opening H2 on the end surface to the outside of the apparatus is represented by an arrow. Therefore, in the present embodiment, between the fins 1132 and the fins 1132 adjacent to each other in the circumferential direction of the heat sink 113 is a flow path in which air that has entered from the air intake port H1 flows to the rear end side. Further, since the light source 112 is disposed in the vicinity of the air intake H1, the cooling efficiency of the light source 112 is good.

  According to the illuminating device 11 of the present embodiment, since the fan is provided, the heat generated by the light source 112 can be efficiently dissipated from the heat source 113 without relying on the heat sink 113 alone, with the help of the fan. Can be dissipated. In addition, an air flow path is formed in the casing 111, and heat generated by the light source 112 is more efficiently released to the outside by the air flowing through the flow path. For this reason, the heat sink 113 is reduced in diameter, the entire apparatus is also reduced in size, and the lighting device 11 is finished in a stylish design.

  FIG. 3 is a diagram schematically illustrating a state in which the illumination system illustrated in FIG. 1 is viewed from the rear end side. In FIG. 3, the diagonally right side on the paper surface is the front end side of the illumination device 11.

  In FIG. 3, the illumination device 11, a support portion 121 that supports the illumination device 11, and a part of the pipe member 122 are illustrated, and the light source of the illumination device 11 is turned on and the transparent screw 1155 is turned on. 1156 is shown shining.

  3 also shows an opening H2 of the fan unit 114 corresponding to the opening provided on the rear end surface of the casing 111, and a fan 1140 and an electric wire 117 that have not been shown so far. One end of the electric wire 117 enters the casing through a hole provided in the casing 111, supplies power to the light source 112 and the fan unit 114, and transmits a control signal. Further, the other end side of the electric wire 117 is accommodated in the pipe member 122.

  Further, in FIG. 3, a rotation preventing portion 1221 included in the pipe member 122 is also shown. As described above, the pipe member 122 is configured such that the support portion 121 that supports the lighting device 11 is rotatably connected around the axis of the lighting device 11. On the other hand, the attachment part 123 shown in FIG. 1 attaches the pipe member 122 to the fixed object such as the wall 90 shown in FIG. The rotation prevention unit 1221 illustrated in FIG. 3 is an L-shaped member that is upside down extending in an oblique direction, and enters the rotation range of the support unit 121. For this reason, in this embodiment, when the support part 121 rotates to a predetermined angle, the engagement piece 1211 of the support part 121 and the rotation prevention part 1221 interfere with each other, and the support part 121 cannot rotate beyond the predetermined angle. . For this reason, it is possible to prevent the electric wire 117 from being twisted by unnecessarily rotating the lighting device 11 around the axis.

  Since the illumination system 10 of the present embodiment allows the rotation of the illumination device 11 with the radial direction as the rotation axis and the rotation around the axis, the adjustment of the irradiation direction of the illumination device 11 causes the electric wire 117 to be twisted. It can be done freely while preventing it. In addition, as described above, the rotation prevention unit 1221 extends in an oblique direction, so the support unit 121 is rotated from the state shown in FIG. 3 to cause the illumination device 11 to irradiate the lateral direction or the upward direction. You can also.

  3 also shows a bolt 1141 for fixing the fan unit 114 to the casing 111 and a bolt 1133 for fixing the heat sink to the casing 111. By removing the fan unit fixing bolt 1141, the fan unit 114 can be taken out from the rear end opening of the casing 111, and further, by removing the heat sink fixing bolt 1133, the heat sink can also be removed from the rear end of the casing 111. It can be taken out from the opening. That is, in the lighting device 11 of the present embodiment, the heat sink is removable from the casing 111. When the illuminating device 11 is used for a long period of time, the air intake H1 is blocked by dust or the like and the opening area becomes small, and the air flow as shown by the arrows in FIG. This may reduce the heat dissipation effect. In addition, dust or the like may be clogged between the fins 1132 and the fins 1132 adjacent to each other in the circumferential direction of the heat sink 113 shown in FIG. In the illumination device 11 of the present embodiment, since the heat sink 113 can be taken out from the casing 111, dust or the like attached to the heat sink 113 can be easily removed with a brush or the like. Further, if air is blown into the casing 111 from which the heat sink 113 has been taken out, the dust adhering to the inner peripheral wall of the casing 111 and the dust closing the air intake port H1 can be easily blown off, and the maintenance becomes easy.

  Next, a modification of the lighting device illustrated in FIG. Hereinafter, components having the same names as those of the components described so far will be denoted by the same reference numerals as those used so far, and redundant description will be omitted, and description will be made focusing on the characteristic portions of the modified examples.

  Fig.4 (a) is a figure which shows the 1st modification of the illuminating device shown to Fig.2 (a).

  4A, the illumination device 11 is shown in a transparent state so that the internal structure can be seen. The front end side is the left side of the figure, and the rear end side is the right side of the figure.

  In the lighting device 11 of the first modification, an air intake H1 is provided on the peripheral surface 111a of the casing 111. 4A is a plurality of arc-shaped slits provided at intervals in the circumferential direction of the casing 111, and is provided in the vicinity of the tip portion of the heat sink 113.

  In addition, the shape of the heat sink 113 provided in the lighting device 11 of the first modification is different from the shape of the heat sink shown in FIG.

  FIG.4 (b) is the figure which looked at the heat sink with which the illuminating device shown to Fig.4 (a) is provided from the axial direction rear end side.

  The heat sink 113 shown in FIG. 4B has a plurality of fins 1132 provided in parallel. Further, the proportion occupied by the base 1131 is smaller than that of the heat sink shown in FIG. 2B, and the proportion occupied by the fins 1132 is higher accordingly. The base portion 1131 is provided with an electric wire passage groove 1131c through which an electric wire (not shown) is passed. 4B shows the rear end surface of the heat sink 113, a disc 1134 is provided at the front end of the heat sink 113, and the light source 112 is bolted to the disc 1134. Bolt holes are provided. Note that the tips of the fins 1132 in the heat sink 113 shown in FIG. 4B are not in contact with the inner peripheral surface of the casing 111, and the air intake is also between the tips of the fins 1132 and the inner peripheral surface of the casing 111. It becomes a passage for air entering from H1. In the first modified example, when the fan can be rotated forward and backward, when the fan is rotated forward, air is taken in from the air intake port H1, and the heat sink 113 is located between the fin 1132 and the fin 1132 or between the fin 1132. Passing between the front end and the inner peripheral surface of the casing 111, air is released from the opening H2 on the rear end surface to the outside of the device, and when the fan is rotated in the reverse direction, air is taken in from the opening H2 on the rear end surface, Air passes through between the fin 1132 and the fin 1132 of the heat sink 113 or between the tip of the fin 1132 and the inner peripheral surface of the casing 111, and this time, air is discharged from the air intake port H1 to the outside of the apparatus (FIG. 4). (See arrow shown in (a)). Instead of making the fan capable of rotating in the forward and reverse directions, the direction of air flow can be reversed by providing the fan upside down or the fan unit 114 itself upside down.

  Fig.5 (a) is a figure which shows the 2nd modification of the illuminating device shown to Fig.2 (a).

  FIG. 5A is a diagram showing a cross section of the front half of the lighting device 11 of the second modification, but hatching representing the cross section is omitted. In FIG. 5A as well, the front end side is the left side of the figure, and the rear end side is the right side of the figure.

  In the second modification, the optical unit 115 is screwed so that the position of the lens 1152 can be freely adjusted in the axial direction of the casing 111. The optical unit 115 shown in FIG. 5A has an inner cylinder 1157 fixed to a tip surface of the heat sink 113 to which the light source 112 is attached, and an outer cylinder 1158 to which a transparent resin plate 1151 and a lens 1152 are attached. The internal / external relationship may be reversed. Both the outer peripheral surface of the inner cylinder 1157 and the inner peripheral surface of the outer cylinder 1158 are provided with screw grooves 1157a and 1158a, and the inner cylinder 1157 and the outer cylinder 1158 are screwed together by the screw grooves 11557a and 1158a. The outer cylinder 1158 is smaller in diameter than the inner diameter of the casing 111, and a gap is formed between the inner peripheral surface of the casing 111 and the outer cylinder 1158 and the inner cylinder 1157, and the annular air intake H 1 is formed at the tip. Thus, air enters the casing 111 from the air intake port H1 (see the arrow in the figure). FIG. 4A also shows a state in which the enamel screw 1152a is bitten into the lens so that the edge of the lens 1152 is slightly crushed to prevent the lens 1152 from rattling.

  FIG. 5B is a view of the illumination device shown in FIG. 5A as viewed from the front end side in the axial direction.

  The outer cylinder 1158 is provided with a circular opening 1158b on the tip side, and the transparent resin plate 1151 is viewed through the opening 1158b. The outer cylinder 1158 is provided with knob portions 1158 c at four locations in the circumferential direction, and the knob portion 1158 c protrudes from the casing 111 as shown in FIG. The outer cylinder 1158 moves forward and backward in the axial direction by pinching the knob portion 1158c and rotating the outer cylinder 1158 forward and backward. If the outer cylinder 1158 is rotated and moved forward (moved toward the front end side), the light emitted from the light source 112 is collected by the lens 1152 to increase the illuminance, and on the contrary, retreats (toward the rear end side). If it is moved), the light emitted from the light source 112 is diffused by the lens 1152 and the illuminance is lowered. In the illumination device 11 of the second modified example, the illuminance or the irradiation range can be adjusted in a continuous manner only by operating the outer cylinder 1158.

  In addition, the illuminating device demonstrated so far can be used also as a downlight removed from the stay 12 and embedded in a ceiling. At this time, the support method can be devised and used as a so-called universal downlight capable of adjusting the angle.

  In the illumination system 10 described above, the illumination device 11 having an excellent heat dissipation effect is employed. In addition, since the diameter of the illumination device 11 is reduced, the illumination device 11 is less noticeable and hardly affects the design on the spot. Furthermore, since it is finished in a stylish design, even if the lighting device 11 enters the field of view, it can be viewed as a part of the design on the spot. And since the illuminating device 11 is reduced in size, conveyance and installation of the illuminating device 11 and adjustment of the installed illuminating device can be performed easily.

DESCRIPTION OF SYMBOLS 10 Illumination system 11 Illuminating device 111 Casing 112 Light source 113 Heat sink 114 Fan unit 1140 Fan 115 Optical unit 1151 Transparent resin board 1152 Lens 117 Electric wire 12 Stay 121 Support part 122 Pipe member 1221 Anti-rotation part 123 Attachment part H1 Air intake H2 Opening

Claims (4)

A cylindrical casing;
A light source disposed on a tip side of the casing;
A fan unit having a fan, which is detachably attached to the rear end opening of the casing;
A heat dissipation member housed between the light source and the fan to dissipate heat from the light source,
The heat radiating member, an illumination device, wherein the axial direction of the rather long than the length of the length of it is radially, but freely taken out solely from the casing.   The said fan unit is arrange | positioned from the rear-end side opening of the said casing to the position away from the distance shorter than the length of the said axial direction of the said heat radiating member, The Claim 1 characterized by the above-mentioned. Lighting device. The heat radiating member is fixed to the casing by a fixing member from the outside of the casing, and can be taken out from the rear end side opening by removing the fixing member. The lighting device according to claim 1. The lighting device according to any one of claims 1 to 3,
A stay for attaching the lighting device to a fixed object,
The stay includes a support portion that rotatably supports the lighting device with a radial direction of the casing as a rotation axis, and a support portion that supports the lighting device so that the lighting device can rotate about an axis of the lighting device. A pipe member connected to a portion, and an attachment portion for attaching the pipe member to the fixed object so as not to rotate around an axis,
The pipe member accommodates a power supply line that supplies power to the light source and the fan, and prevents the rotation of the illuminating device supported by the support portion from exceeding a predetermined angle around an axis. A lighting system comprising:

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