JP2016076417A - Led projector with high light volume - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight LED projector of relatively simple structure showing high light volume and an easy assembly work without using heavy material or a heat radiation structure of complex configuration and without using a forced cooling means such as a radiation fan and the like.SOLUTION: There are provided a movable frame 8 rotated around a vertical axis of a plurality of LED panels 10, rotated in a lateral direction for adjusting a position of light projection plane individually; and a fixed frame 9 for integrally adjusting, fixing a light projecting direction of LED panel 10 oppositely supported in a lateral axis direction of the movable frame 8 and installed at the movable frame 8 in a vertical direction for an elevation angle and angle of depression around the lateral axis. The LED panel 10 includes a heat release member comprising a main body part having several U-shaped section grooves extending in vertical axis direction and arranged side-by-side in a lateral axis direction at a rear surface of the LED board storing part composed of recess for closely contacting and fixing the rear surface of LED board 21; and a lid body for forming an aeration passage for closing a released part of a groove of U-shaped section of the main body to generate air flow under a chimney effect together with the main body part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an LED projector using a plurality of LED panels in which a large number of LED elements are arranged as light emitting means, and more particularly, to a high-intensity LED projector having a heat dissipation structure that dissipates heat generated by an LED panel during lighting driving.

  From the characteristics of improved light emitting performance and low power consumption, lighting fixtures using LED elements (light emitting diodes, hereinafter also simply referred to as LEDs) for light emitting devices have been put into practical use. Lighting fixtures using LEDs can be used in a wide variety of light, from electric lamps with relatively low light output for indoor lighting, which are constructed by mounting a large number of LEDs in a lamp, to large floodlights used for lighting in public facilities and stadiums. Outputs, shapes and sizes are in practical use.

  An LED projector that requires a large amount of light has a plurality of LEDs arranged vertically and horizontally to form an LED panel with a large amount of light as a whole. Such LED panels have a larger number of LEDs mounted on a single LED panel than LED lighting fixtures used in relatively small areas such as homes and offices. When a light quantity projector is used, the amount of heat generated is extremely large.

  The LED element is current-driven, and power that does not contribute to light emission becomes heat and stays in the lamp. In the case of a large light quantity projector in which a plurality of LED panels are arranged, it is difficult to obtain a sufficient heat dissipation effect with a heat sink having a normal heat radiation fin. Some have a forced cooling fan or liquid circulation cooling structure, but the increase in installation cost cannot be ignored.

  Patent Literature 1, Patent Literature 2, Patent Literature 3 and the like can be cited as disclosures of the prior art related to the heat generation (radiation) structure in such a large light quantity LED projector.

  The LED lighting device disclosed in Patent Document 1 discloses a fish collecting lamp in which a heat sink having a heat dissipating fin structure is provided on the back surface of an LED substrate on which a large number of LEDs are arranged. It is said that the LED substrate is a substrate in which thick copper foils are laminated to reduce the thermal resistance and realize a fanless heat removal structure for forced cooling. Similarly, Patent Document 2 discloses a streetlight having a heat dissipation structure in which a heat sink having heat dissipation fins is provided on the back surface of an LED substrate on which copper plates are laminated.

  The fish collection lamp disclosed in Patent Document 3 cools the LEDs and the like by storing a cooling unit having a substrate, a power supply unit, and a circulation fan mounted with a plurality of LEDs in a waterproof case, and circulating air inside the waterproof case. Like to do.

JP 2006-86230 A JP2013-512560A Utility model registration No. 3099741

  Since the heat radiation shown in Patent Document 1 and Patent Document 2 is a cooling fin formed by extrusion molding of a metal bulk such as aluminum as its main body, when applied to a large light quantity projector with a large output light quantity The weight of the entire projector is excessive due to the weight of the heat dissipation structure itself. For this reason, especially when installing as a large light projector for lighting in a wide area such as a stadium, it is necessary to strengthen not only the projector itself but also the mounting base that is ancillary equipment. However, it is difficult to install the projector, and there is a limit to the cost reduction.

  In addition, the forced air cooling structure for forcibly removing heat from the LED using a blower fan consumes a large amount of power in the cooling mechanism itself, and the number of parts of the entire configuration is considerably increased. Since the sealed structure as disclosed in Patent Document 3 performs heat removal by circulating air with a limited volume, it is considered that there is a limit to the heat dissipation capability. In addition, in the case where each LED panel has a cooling device, it is expensive to configure a large amount of light projecting device in which a large number of LED panels are arranged.

  As described above, it is practical to apply the heat dissipation structure of the conventional LED lighting fixture as it is to a large (large light) projector in consideration of the manufacturing cost of the fixture and the incidental cost required to install the completed projector. Not. The object of the present invention is to achieve a lightweight structure that is relatively simple and easy to assemble without using heavy materials and complicated heat dissipation structures, and without using forced cooling means such as heat dissipation fans. The object is to provide a high-intensity LED projector.

  In order to achieve the above object, the high-intensity LED projector according to the present invention is configured as described below. Here, in order to facilitate understanding of the configuration of the present invention, reference numerals in the drawings of the embodiments are added and described, but the present invention is not limited to the embodiments indicated by the appended symbols. .

(1) A large-intensity projector 100 comprising a plurality of LED panels 10 each having a rectangular outer shape in which a large number of LED elements 2 are mounted on a main surface of an LED substrate 21, and being vertically mounted.
A plurality of the LED panels 10 facing each other in the vertical axis direction are bridged and juxtaposed in the horizontal axis direction, and the LED panel 10 is rotated in the horizontal direction around the vertical axis of the LED panel 10. A movable frame 8 that can be fixed by individually adjusting the position of the light projection surface,
The light projection direction of the LED panel 10 supported by the left and right sides opposed in the horizontal axis direction of the movable frame 8 and mounted on the movable frame 8 in the vertical direction of the elevation angle and the dip angle around the horizontal axis of the movable frame. A fixing frame 9 for integrally adjusting and fixing;
Have
The LED panel 10 has an LED substrate housing portion 16 formed of a concave portion that tightly fixes the back surface of the LED substrate 21. The LED panel 10 extends vertically in the vertical axis direction on the back surface of the LED substrate housing portion 16. A main body portion 1 having a plurality of U-shaped cross-sectional grooves 71 arranged side by side in the axial direction, and an open portion of the U-shaped cross-section groove 71 of the main body portion 1 to block the chimney effect together with the main body portion 1 It is characterized by comprising a heat removal member 15 composed of a lid 11 that forms an air passage 7 for generating an air flow by (stack effect).

  (2) The inner wall of the groove 71 having a U-shaped cross section constituting the air passage 7 of the main body 1 in (1) has a number of protrusions along the extending direction of the groove. .

  (3) It has a large number of protrusions on the inner wall of the groove 71 having a U-shaped cross section constituting the air passage 7 of the main body 1 in (1).

  (4) The power supply unit 5 is attached to the surface opposite to the air passage 7 of the lid 11 constituting the air passage 7 of the main body 1 in (1).

  (5) The power supply unit 5 in (4) is attached to the lid body 11 via a spacer 62, and adjusts the length of the spacer 62 to allow air to flow between the lid body 11. The desired gap is formed.

  (6) The power supply unit 5 in (4) is housed in a power supply unit waterproof cover 6.

(7) The LED panel 10 in (1) includes a reflector 3 that is installed on the main surface of the LED substrate 21 and reflects light emitted from the multiple LEDs forward.
A light transmission protective plate 4 is provided for covering the entire surface of the LED panel 10 including the entire surface of the reflector 3 and waterproofing the LED substrate housing 16.

  (8) The reflector 3 in (7) is characterized in that a funnel-like reflecting surface 31 is formed that individually surrounds each of the LED elements 2 mounted on the main surface of the LED substrate 21.

  (9) The reflector 3 in (7) is characterized in that the LED board 21 of the LED panel 10 is divided into a plurality of parts and installed.

  The present invention is not limited to the above-described configurations, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention.

  The large-intensity projector 100 according to the present invention bridges the upper and lower sides facing each other in the vertical axis direction of the plurality of LED panels 10 and juxtaposes them in the horizontal axis direction, and horizontally extends around the vertical axis of the LED panel 10. There is provided a movable frame 8 that is rotated and mounted so that the light projection surface of the LED panel 10 can be individually adjusted and fixed. Further, the light projection direction of the LED panel 10 supported by the left and right sides opposed to each other in the horizontal axis direction of the movable frame 8 and mounted on the movable frame in the vertical direction of the elevation angle and the dip angle around the horizontal axis of the movable frame 8 is integrated. The fixed frame 9 for adjusting and fixing to the above is provided, and the movable frame 8 forms an integrated lighting device.

  The LED panel 10 has an LED substrate housing portion 16 formed of a recess that tightly fixes the back surface of the LED substrate 21. The LED panel 10 extends vertically on the back surface of the LED substrate housing portion 16 and extends in the horizontal axis direction. A main body 1 having a plurality of U-shaped cross-sectional grooves 71 arranged side by side, and a U-shaped cross-section groove 71 of the main body 1 are closed so that airflow is generated together with the main body 1 by a stack effect. The heat removal member 15 is constituted by the lid 11 that forms the ventilation path 7 for generation.

  The high-intensity LED projector 100 configured as described above is made of an aluminum material including the main body 1 and is significantly lighter than a base projector by including a heat removal means with a simple configuration. This large light quantity LED projector 100 is installed in a required place in a state where it stands up and down. For this grounding, it is not necessary to provide a special frame, and it is sufficient to fix the fixing frame 9 to the installation place by any fixing means.

  In this state, the power supply line is connected and lights up. Heat generated from the LED elements 2 constituting the LED panel 10 is transferred from the LED substrate 21 to the main body 1 by heat conduction, and the temperature of the main body 1 is increased. The air in the ventilation path 7 of the main body 1 is warmed by this heat, the temperature rises, the density decreases, and the buoyancy increases. As a result, the air inside the air passage 7 flows upward, rises and is released into the air from the upper opening.

  As the air in the air passage 7 rises and is released, cold air is sucked from the lower opening of the air passage 7, so that a so-called chimney effect is generated, and the air flow continuously passes through the air passage 7. The heat transferred from the LED substrate 21 by the passage of the air flow is diffused into the air. Thereby, it is prevented that the LED element 2 overheats and luminous ability falls or it leads to destruction. The heat generated in the power supply unit 5 is cooled to a predetermined temperature or less by heat radiation from the power supply unit waterproof cover itself and an air flow flowing between and around the power supply unit waterproof cover 6 and the lid 11.

  As described above, according to the present invention, compared to the conventional heat sink structure having large heat radiation fins, the heat removal structure can be configured by a simple extrusion molding using a light metal such as aluminum, and the electric power from the cooling fan or the like. There is no need for consumption, and it is possible to provide a low-cost, high-intensity LED projector that is simple in structure, easy to handle during installation work, and the like.

It is a front view explaining the whole shape of Example 1 of the high light quantity LED projector based on this invention. It is the top view seen from the arrow A direction of FIG. 1 explaining the whole shape of Example 1 of the high light quantity LED projector which concerns on this invention. It is explanatory drawing of the LED panel which comprises Example 1 of the high light quantity LED projector based on this invention. It is a schematic diagram explaining the adjustment fixing structure of the movable frame which adjusts and fixes the up-down direction light irradiation angle of Example 1 of the high light quantity LED projector which concerns on this invention. It is a schematic diagram explaining the movable frame of Example 1 of the high light quantity LED projector which concerns on this invention. It is a schematic diagram explaining the fixed frame of Example 1 of the high light quantity LED projector which concerns on this invention. It is a schematic diagram explaining the reflector which comprises the LED panel of Example 1 of the high light quantity LED projector which concerns on this invention. It is a schematic diagram explaining the LED board which comprises the LED panel of Example 1 of the high light quantity LED projector based on this invention. It is a schematic diagram explaining the light transmission protection board which comprises the LED panel of Example 1 of the high light quantity LED projector which concerns on this invention. It is a schematic diagram explaining the main-body part and cover body which comprise the LED panel of Example 1 of the high light quantity LED projector which concerns on this invention.

  Embodiments of the present invention will be described below in detail with reference to the drawings of the embodiments. The basic configuration of the high-intensity LED projector 100 according to the present invention is that a plurality of LED panels 10 having a front surface as a light projecting portion are attached to a movable frame 8 so as to be rotatable in left and right directions, and this is vertically attached to a fixed frame 9 with fulcrum screws It is configured to be mounted rotatably.

  FIG. 1 is a front view for explaining the overall shape of a first embodiment of a high light quantity LED projector according to the present invention, and FIG. 2 is an arrow A in FIG. It is the top view seen from the direction. FIG. 3 is an explanatory diagram of an LED panel constituting the first embodiment of the high light quantity LED projector according to the present invention, and FIG. 4 adjusts the vertical light irradiation angle of the first embodiment of the large light quantity LED projector according to the present invention. It is a schematic diagram explaining the adjustment fixing structure of the movable frame fixed by the. 1 and 2, the large light quantity projector 100 includes one or more (five in this embodiment) LED panels 10 each having a rectangular outer shape in which a large number of LED elements 2 are mounted on the main surface of the LED substrate 21. It is constructed by mounting in the direction.

  3A is a front view of the LED panel of the present embodiment, FIG. 3B is a side view in the longitudinal direction viewed from the direction of arrow B in FIG. 3A, and FIG. 3C is the view in FIG. FIG. 3 (b) and FIG. 3 (c) show a part through the inside in a short side view as seen from the direction of arrow C. As shown in FIG. 3A, the LED panel 10 of the present embodiment is rectangular in plan view having a long axis in the vertical axis direction (longitudinal direction), and in the vertical axis direction of the plurality of LED panels 10. The opposing upper and lower sides are bridged to the movable frame 8 and are juxtaposed in the horizontal axis direction. The LED panel 10 is fixed to the movable frame 8 by rotating in the horizontal direction (horizontal axis direction) around the vertical axis and individually adjusting the position of the light projection surface of the LED panel 10. In the present embodiment, as shown in FIG. 2, the adjustment is made by looking at the right lateral direction from the LED panel 10 itself with respect to a line passing through the right / left angle adjustment / fixing screw 12 of the LED panel 10 and perpendicular to the plane of the movable frame 8. Both the angle θr and the adjustment angle θl viewed in the left lateral direction were set to 10 degrees. The adjustment of the lateral direction position is performed according to the required illumination pattern of the installation place of the large light quantity LED projector 100.

  FIGS. 4A and 4B illustrate the attachment function of the movable frame and the fixed frame and the adjustment function of the vertical angle in the first embodiment of the high-intensity LED projector. FIG. 4A is a top view, and FIG. FIG. 4A is a front view (a LED panel is not shown) viewed from the direction of arrow D, and FIG. 4C is a side view of FIG. 4B viewed from the direction of arrow E. The movable frame 8 to which the LED panel 10 is attached is attached to the fixed frame 9. The fixed frame 9 of the present embodiment has a U-shape in which arms planted upward are formed at both ends of a base member extending in the lateral direction, and the movable frame 8 is attached to this arm portion by a fulcrum screw 83. Then, the light projection direction of the LED panel 10 mounted on the movable frame 8 is integrally adjusted in the vertical direction of the elevation angle and the dip angle around the horizontal axis of the movable frame 8 and fixed at a predetermined position. In the present embodiment, the vertical adjustment angle can be adjusted within a range of about 90 degrees with respect to the planting surface of the fixed frame 9. That is, each LED panel 10 can independently adjust the direction of the light projection surface in the vertical direction and the horizontal direction, and can set the required light projection pattern for the illumination area. The fixed frame 9 is fixed to the installation place by an appropriate means.

  As shown in FIG. 3C, the LED panel 10 has an LED substrate housing portion 16 formed of a recess that tightly fixes the back surface of the LED substrate 21. The LED panel 10 has a main body 1 having a plurality of U-shaped cross-sectional grooves 71 extending vertically in the vertical axis direction and arranged in parallel in the horizontal axis direction on the back surface of the LED substrate housing portion 16. This structure comprises a lid 11 that closes an open portion of a groove 71 having a U-shaped cross section of the main body 1 and forms a ventilation path 7 for generating an air flow by the stack effect together with the main body 1. The heat removal member 15 is configured as described above.

  Further, by providing a large number of protrusions along the extending direction of the groove on the inner wall of the groove 71 having a U-shaped cross section constituting the air passage 7 of the main body 1, the area of the inner wall surface of the air passage 7 can be reduced. The heat removal effect can be improved by increasing the contact area with the air flow. Alternatively, the same heat removal effect can be improved by forming a large number of protrusions on the inner wall of the groove 71 having a U-shaped cross section constituting the air passage 7 of the main body 1.

  Furthermore, the power supply unit 5 is attached to the surface of the lid 11 constituting the air passage 7 of the main body 1 opposite to the air passage 7. The power supply unit 5 is attached to the lid body 11 via a spacer 62, and adjusts the length of the spacer 62 to form a desired gap for allowing air to flow between the lid body 11. The power supply unit 5 is isolated from the outside by a power supply unit waterproof cover 6 and is compatible with all weather. A power supply unit mounting screw 61 is provided on the side surface of the power supply unit waterproof cover 6.

  The power supply unit mounting screw 61 has a waterproof cable clamp structure. One power supply unit mounting screw 61 (for example, the lower side in FIG. 3A and FIG. 3B) draws a power supply cable from an external power source, and the other power supply unit mounting screw 61 (for example, FIG. On the upper side of the drawing (b), the power supply cable is led out to the LED board 21 in the LED board storage unit 16. In addition, although the drawing-in part of the electric power feeding cable to the LED board storage part 16 is also waterproof specification, illustration was abbreviate | omitted.

  Reference numeral 12 denotes a left / right angle adjusting / fixing screw that bridges the LED panel 10 between the left and right knitting facing the movable frame 8. The left / right angle adjustment / fixing screw 12 is fixed to the support frame 17 attached to the main body 1 with a tap pin 13, and the LED panel is attached to the movable frame flange 81 of the movable frame 8 so as to be adjustable / fixed.

  FIG. 5 is a schematic diagram for explaining the movable frame of the first embodiment of the high-intensity LED projector according to the present invention. In FIG. 5, the fixing frame 9 shown in FIG. 4 is removed and shown. 5A is a top view, FIG. 5B is a front view, and FIG. 5C is a side view. Triangular movable frame flanges 81 are attached to both ends of the movable frame 8 and are reinforced by connecting beams 86. A fulcrum screw hole 84 and a vertical angle adjustment / fixation screw hole 85 are formed in the movable frame flange 81.

  FIGS. 6A and 6B are schematic views for explaining the fixed frame of the first embodiment of the high-intensity LED projector according to the present invention, where FIG. 6A is a front view and FIG. 6B is a side view. The fixed frame 9 has a U-shape with the upper part opened, and the arm-shaped member formed on the side surface is provided with the fulcrum screw hole 84 and the vertical adjustment groove 91 of the movable frame.

  7A and 7B are schematic views for explaining a reflector constituting the LED panel of Example 1 of the high-intensity LED projector according to the present invention. FIG. 7A is a front view and FIG. 7B is a side view. The LED panel 10 described in FIG. 3 has the reflector 3 on the main surface of the LED substrate 21 and is installed so as to reflect the light emitted from the LED 2 forward. The reflector 3 is formed of an aluminum plate having a thickness of 0.25 mm or a thin iron plate. A funnel-like reflecting surface 31 is formed to individually surround each of the LEDs 2 mounted on the main surface of the LED substrate 21. The surface of the funnel-shaped reflecting surface 31 is mirror-finished or white-baked. The surface of the reflector 3 excluding the funnel-like reflecting surface 31 is preferably the same as the surface of the funnel-like reflecting surface 31 or has a white baking finish.

  The reflector 3 is divided into a plurality of the LED boards 21 of the LED panel 10 and installed. In the present embodiment, one LED board 21 is accommodated in each LED panel 10, and two reflectors 3 are used for one LED board. FIG. 7 shows one of them. Reference numeral 32 denotes an attachment portion to the LED substrate 21, and a flat portion of the reflector 3 is cut and raised on the back surface, and the cut portion is set as a fixed side 32 and a screw hole is provided here. A dimension example of the reflector 3 and a dimension example of the funnel-shaped reflecting surface 31 are as follows. Needless to say, the present invention is not limited to these dimensions.

Reflector 3 longitudinal dimension Y1: 140 mm
Reflector 3 short direction dimension X1: 116 mm
Depth d of funnel-like reflecting surface 31: 3.5 mm
Rear opening diameter φ1: 3.0 mm of funnel-shaped reflecting surface 31
Front opening diameter of funnel-shaped reflecting surface 31 φ2: 8.0 mm
Opening angle θφ of funnel-like reflecting surface 31: 71 degrees The number and arrangement of funnel-like reflecting surfaces 31 provided in the reflector 3 correspond to the number and arrangement of LEDs mounted on the LED substrate 21.

  FIG. 8 is a schematic diagram for explaining an LED substrate constituting the LED panel of Example 1 of the high-intensity LED projector according to the present invention. FIG. 8 (a) is a front view and FIG. 8 (b) is a side view. The LED substrate 21 is made of, for example, a high thermal conductive ceramic plate having a thickness of 1 mm, and [6 × 6] + [6 × 6] = 72 LEDs 2 are mounted on the surface thereof. And two reflectors 3 demonstrated in the said FIG. 7 on LED2 are installed in the vertical direction. Both screws are fixed to the screw holes of the fixed side 32 and the fixing holes 22 of the LED substrate 21 in FIG. In this embodiment, the vertical dimension Y2 of the LED substrate 21 is 371 mm, and the horizontal dimension X2 is 133 mm. Similar to the dimensions of the respective members described above, the present invention is not limited to such dimensions.

  FIG. 9 is a schematic view for explaining a light transmission protection plate constituting the LED panel of Example 1 of the high light quantity LED projector according to the present invention, FIG. 9 (a) is a plan view, and FIG. 9 (b) is a side view. is there. As the light transmission protection plate 4, a glass plate having a thickness of 2 mm obtained by bonding a scattering prevention film is used. The dimensions of the light transmission protection plate 4 are vertical dimension Y3 = 371 mm and horizontal dimension X3 = 133 mm, which are the same dimensions as the LED substrate.

  FIG. 10 is a schematic diagram for explaining the main body and the lid that constitute the LED panel of Example 1 of the high-intensity LED projector according to the present invention. FIG. 10 (a) is a front side (front side) plan view, and FIG. (B) is a side view, FIG.10 (c) is a rear view of a cover body, and FIG.10 (d) is a side view. The main body 1 and the lid 11 of this embodiment are both formed by extrusion molding of an aluminum material, and the surface is anodized. An LED substrate storage portion 16 is formed on the front surface side of the main body portion 1. In this LED substrate storage portion 16, the LED substrate 21 and the reflector 3 are stored, and the light transmission protection plate 4 is provided to cover the LED substrate 21 and the reflector 3. The light transmission protection plate 4 is fitted around the inner edge of the main body 1 through a waterproof and airtight structure suitable for rubber packing or the like, and seals the LED substrate housing 16.

  The back surface of the LED substrate housing 16 integrally has a plurality of U-shaped cross-sectional grooves 71 extending vertically in the vertical axis direction and arranged side by side in the horizontal axis direction. A lid body 11 is fixed which closes an open portion of the groove 71 having the U-shaped cross section of the main body portion 1 and forms a ventilation path 7 for generating an air flow by the stack effect together with the main body portion 1. . FIG.10 (c) shows the back surface of the cover body 11, and FIG.10 (d) shows a side surface. The main body 1 having the air passage 7 formed by the air passage 7 and the lid 11 constitutes the heat removal member 15. Examples of dimensions of the main body 1 are as follows. Longitudinal dimension Y4 = 380 mm, lateral direction X4 = 142 mm, and thickness D4 = 66 mm. Moreover, the dimension example of the cover body 11 is as follows. The longitudinal direction Y5 = 380 mm, the lateral direction X5 = 146 mm, and the thickness D5 = 12 mm.

  In addition, although the inner wall of the groove | channel 71 of the U-shaped cross section of the ventilation path 7 of the main-body part 1 is good also as a flat surface, the contact area with air is provided by providing many protrusions along the extension direction of the said groove | channel 71. The heat removal effect can be improved. Moreover, you may provide not only a protrusion but many protrusions. A tapping screw or the like can be used to fix the lid 11 to the air passage 7.

  The power supply unit 5 is attached to the surface opposite to the air passage 7 of the lid 11 constituting the air passage 7 of the main body 1. The lid 11 is provided with a power supply unit attachment hole 14. As described with reference to FIG. 3, the power supply unit 5 is attached to the screw hole 14 of the lid 11 with a bolt that penetrates the spacer 62. By adjusting the length of the spacer 62, it is possible to form a desired gap for allowing air to flow between the spacer 11 and the lid 11.

  According to the present embodiment, the heat generated by the LED element can be efficiently radiated by the heat removal structure (heat removal member 15) using the chimney effect of the air passage 7 constituted by the main body 1 and the lid 11. For this reason, a heat radiating structure such as a cooling fin which is heavy and expensive to manufacture is not required, and forced cooling means such as a cooling fan is not required.

  In the embodiment described above, the description has been given on the assumption that five LED panels 10 mounted with a large number of LED elements are attached to the movable frame 8. The number of LED panels 10 attached to the movable frame is set to an optimum number in the illumination area according to the shape, and the number of large light quantity projectors can be arbitrarily changed according to similar conditions.

  In the above embodiment, the air passage has a rectangular cross section, but the present invention is not limited to this, and a triangular cross section, semicircle, or partial circular cross section in which one side wall is fixed in contact with the LED board heat sink, It is also possible to have a polygonal cross section.

  According to the present invention, an aluminum extrusion-molded product is used as the heat removal structure material, so that it is lightweight and has a relatively simple structure and an easy assembly operation without using forced cooling means such as a heat radiating fan. A lightweight LED floodlight can be provided.

DESCRIPTION OF SYMBOLS 1 ... Main-body part 11 ... Cover body,
DESCRIPTION OF SYMBOLS 12 ... Tap pin 14 ... Power supply unit attachment hole 15 ... Heat removal member 16 ... LED board accommodating part 17 ... Support frame 2 ... LED element 21 ... LED board 22 ... Fixing hole 3 ... Reflector 31 ... Funnel-like reflecting surface 32 ... Fixed piece 4 ... Light transmission protection plate 5 ... Power supply unit 6 ... Power supply unit waterproof cover 61 ... Power supply unit installation Screw 62 ... Spacer 7 ... Ventilation path 71 ... Groove 8 ... Movable frame 81 ... Movable frame flange 82 ... Vertical angle adjustment / fixing screw 83 ... Supporting screw 84 ... Fulcrum screw hole 85 ... vertical angle adjustment / fixing screw hole 86 ... connecting frame 9 ... fixed frame 91 ... adjustment groove of movable frame,
10 ... LED panel 100 ... High light projector

Claims (9)

A large-intensity projector configured by vertically mounting a plurality of LED panels each having a rectangular outer shape in which a large number of LED elements are mounted on a main surface of an LED substrate,
A plurality of the LED panels facing the vertical axis in the vertical direction are respectively bridged in the horizontal axis direction and arranged in the horizontal axis direction, and rotated in the horizontal direction around the vertical axis of the LED panel to project the light from the LED panel. A movable frame that can be fixed by adjusting the position of the surface individually,
The light projection direction of the LED panel mounted on the movable frame is integrally supported in the vertical direction of the elevation angle and the dip angle around the horizontal axis of the movable frame. A fixed frame for adjusting and fixing;
Have
The LED panel includes an LED substrate housing portion including a concave portion that tightly fixes the back surface of the LED substrate, and the back surface of the LED substrate housing portion extends up and down in the vertical axis direction and extends in the horizontal axis direction. A main body having a plurality of U-shaped cross-section grooves arranged side by side, and an air flow for closing the open section of the U-shaped cross-section grooves of the main body section 1 and generating an air flow with a chimney effect together with the main body section A high-intensity light projector comprising a heat removal member including a lid that forms a path. In claim 1,
A large light quantity projector having a plurality of protrusions along an extending direction of the groove on an inner wall of a groove having a U-shaped cross section constituting the air passage of the main body. In claim 1,
A large-intensity light projector having a large number of protrusions on an inner wall of a groove having a U-shaped cross section constituting the air passage of the main body. In claim 1,
A large-intensity light projector, wherein a power supply unit is attached to a surface of the lid that constitutes the air passage of the main body, opposite to the air passage. In claim 4,
The power supply unit is attached to the lid body via a spacer, and a desired gap for allowing air to flow between the lid body and the length of the spacer is adjusted. Large light projector. In claim 4,
The power supply unit is housed in a power supply unit waterproof cover. In claim 1,
The LED panel has a reflector that is installed on the main surface of the LED substrate and reflects light emitted from the multiple LEDs forward;
A high light quantity projector comprising a light transmission protection plate that covers the entire surface of the LED panel including the entire surface of the reflector and waterproofs the LED substrate housing portion. In claim 7,
The reflector is provided with a funnel-like reflecting surface that individually surrounds each of the LED elements mounted on the main surface of the LED substrate. In claim 7,
The said reflector 3 is divided into plurality about the said LED board 21 of the said LED panel 10, and is installed, The large light quantity projector characterized by the above-mentioned.

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