JP6332435B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device used as a road lamp or the like.

  Conventionally, as this kind of illuminating device, there exists a thing described in patent document 1, for example. This illuminating device is configured to adjust the irradiation direction of each LED module by adjusting the mounting angle of the LED module disposed in the apparatus main body. For this reason, no reflecting mirror is provided.

JP 2007-242258 A

  However, since the illumination device described in Patent Document 1 does not include a reflecting mirror that controls the light distribution of the LED module, there is a problem that the amount of light leaked outside the irradiated region is large and the illumination efficiency is not high. . In particular, since the light irradiated in the width direction of the road to be illuminated cannot be controlled by the reflecting mirror, there is a large risk of leaking light in the road width direction and adversely affecting neighboring houses.

  In addition, since the plurality of LED modules are fixed to the mounting base, for example, when a defect such as a defect occurs in a part of the LED module, only the LED module in which the defect has occurred can be replaced. There is also a problem that the entire lighting device must be replaced and the maintenance cost is high.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an illumination device with little leakage light and high illumination efficiency.

A lighting device according to claim 1 of the present application is formed integrally with a light emitting portion having a light emitting element; a lens base portion having a rectangular planar shape and two spherical lenses partially overlapping in the longitudinal direction of the lens base portion, A lens portion covering the light emitting portion; a plurality of optical units having the light emitting portion and the lens portion; a plurality of rows in a direction in which a central axis passing through the plurality of optical units in the front-rear direction and a longitudinal direction of the lens portion are orthogonal And an apparatus main body provided with an irradiating unit having an opening for irradiating light from the optical unit to the outside, and attached so that the longitudinal directions of the lens units of the optical units in adjacent rows do not overlap each other. It is characterized by.

  In the invention below this claim, as the light emitting element of the optical unit, a light emitting element using a semiconductor as a light emitting source, such as a light emitting diode (LED) or a semiconductor laser, can be used. In the case of an LED, for example, a COB (Chip On Board) or SMD type LED can be suitably used. The number of light emitting elements and the number of optical units can be arbitrarily selected. The plurality of optical units may have the same function and performance, or may have different functions and performance. The apparatus main body is preferably made of a metal made of, for example, aluminum die-casting or the like, or a synthetic resin that does not transmit light, and blocks light. However, light leakage may be allowed within a range that does not cause light interference. The support plate of the optical unit can be formed of metal or synthetic resin, but when the light emitting element is an LED, it is made of a metal made of aluminum die casting or the like, and the LED is radiated by disposing the LED so as to be thermally conductive. It is preferable to adopt a configuration that promotes.

  Further, the lighting device of the present invention is preferably used as an outdoor lighting device such as road lights on highways and ordinary roads, crime prevention lights for outdoor lighting such as parks, etc., but in the longitudinal direction of indoor corridors, passages, etc. It can also be used as an indoor lighting fixture installed in a place that requires a predetermined brightness in the direction in which the passage or the like extends. For example, when used for a security light, it is preferable to emit light obliquely downward from both sides in the width direction of the apparatus main body so as to obtain a wide range of light distribution along the longitudinal direction of the road.

  According to the illuminating device which concerns on Claim 1, it aims at providing the illuminating device with little leakage light and high illumination efficiency.

The bottom view of the illuminating device which concerns on the 1st Embodiment of this invention. FIG. 3 is an external perspective view when the lighting device shown in FIG. 1 is placed on a support column. FIG. 3 is an external perspective view of the lighting device shown in FIGS. The front view of the illuminating device shown in FIGS. Same as above, top view. Same left side view. The right side view. The VIII-VIII line schematic sectional drawing of FIG. FIG. 3 is a plan view when two LED optical units shown in FIGS. 1 and 2 are juxtaposed on a unit support plate. The front view when the LED optical unit shown in FIG. 8 is seen from the front of the irradiation opening. FIG. 11A is a schematic end view of a cross section taken along line XI-XI shown in FIG. 10, and FIG. 11B is a schematic cross sectional view showing a modification of FIG. The perspective view when the LED optical unit shown in FIG. 1 etc. is seen from the front. The perspective view when the LED optical unit is viewed from the back side. FIG. 3 is a perspective view of a lighting device disposed on a bending pole. The bottom view of the illuminating device which concerns on the 2nd Embodiment of this invention. FIG. Side sectional view of the same. The top view of the LED optical unit shown in FIGS. The perspective view of the reflector shown in FIGS. FIG. 18 is a schematic diagram showing a reflecting action of the optical unit shown in FIGS. The side view of the front irradiation LED optical unit shown in FIGS. The side view of a back irradiation LED optical unit. XXIII-XXIII sectional view taken on the line of FIG. The figure which shows the light distribution characteristic when the one illuminating device shown in FIGS. 15-22 is standingly arranged outside the one corner part of the cross-shaped intersection of a road. The figure which shows the synthetic | combination light distribution characteristic when four illuminating devices are standingly installed in the cross-shaped intersection of the road. The bottom view of the illuminating device which concerns on the 3rd Embodiment of this invention. The perspective view which shows the state which has arrange | positioned the some optical unit to the unit mounting plate. The enlarged plan view of the optical unit shown in FIG. 26, FIG. The side view of the some optical unit arranged in the transversal direction intermediate part of the unit mounting plate shown in FIG. XXX-XXX sectional view taken on the line of FIG. FIG. 27 is a cross-sectional view of a part (lower part in FIG. 31) of the lighting device viewed from the front end at the left end in FIG. 26 and a part of the other part (upper part in FIG. 31).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  2 is an external perspective view when the lighting device according to an embodiment of the present invention is placed on a pole (post), and FIG. 3 is an external perspective view when the lighting device itself is overhead. 4 is a front view of the illumination device itself, and FIG. 5 is a plan view of the same.

  As shown in these drawings, the lighting device 1 according to the present invention can be used as a road lamp or the like on a road such as a highway or a general road, and therefore, a case where the lighting apparatus 1 is applied to a road lamp will be described below. As shown in FIG. 2, the illuminating device 1 is disposed at a height of, for example, about 10 m above the ground by a pole 2 made of a hollow column or a hollow prism as a column. The poles 2 are firmly erected on the ground outside the widthwise end of a road such as an expressway, for example, and a plurality of poles 2 are erected at a required pitch in the longitudinal direction of the road. As shown in FIGS. 3 to 5, the lighting device 1 has a device main body A. The apparatus main body A is configured by sealing an upper open end 3d of the case main body 3 by fixing an upper lid 4 as an example of a cover to the opening end of the upper surface of the case main body 3 by screwing or the like. Yes.

  As shown in FIG. 3, the upper lid 4 is formed in an approximately oval shape in plan view, for example, by aluminum die casting, and the width direction of the road (not shown) that is an example of an illumination target (left and right directions in FIGS. 4 and 5). ) Is formed longer than the length l along the longitudinal direction of the road (the vertical direction in FIGS. 4 and 5).

  As shown in FIGS. 3 to 7, the upper lid 4 is formed such that the upper surface in the drawing is a curved surface 4 b that bulges outward, with the substantially central portion as a top portion 4 a. On the curved surface 4 b, a pair of front and rear protruding ridges 4 c and 4 d that are convex outward are integrally coupled in the longitudinal direction of the upper lid 4.

  These ridges 4c and 4d are arranged in parallel substantially at a predetermined interval in the width direction of the upper lid 4. Between these ridges 4c and 4d, a strip-like recess 4e recessed in a concave arc shape is formed inside. Coupled together.

  The concave arc-shaped concave portion 4e is a downward slope that gradually decreases from the central portion 4a of the upper lid 4 toward the front end portion (left end portion in FIGS. 4 and 5) 4f and the rear end portion (right end portion in FIGS. 4 and 5) 4g. The surfaces 4h and 4i are integrally coupled by curved surfaces. That is, the outer surface of the upper lid 4 is formed in a streamline shape that reduces the air resistance when the outside air flows in the longitudinal direction and the width direction as indicated by arrows in FIG.

  As shown in FIG. 4, the upper lid 4 is pivotably attached to the upper end of the rear end (right end in FIG. 4) of the rear end 4g of the rear end 4g, and can be opened and closed in the direction of the white arrow in FIG. And is formed on the opening / closing lid.

  The interior of the rear end portion (right end portion in FIG. 4) of the case body 3 below the opening / closing lid 4g in FIG. 4 is formed in the electric chamber 3a. This electric chamber 3a is partitioned from a light source chamber 3c, which will be described later, by a partition wall 3b indicated by a broken line in FIG. 4, and a power terminal (not shown), one end of a power line and a lighting control line connected to the power terminal. Is housed in a watertight manner.

  7 is inserted into the right end wall of FIG. 4 and FIG. 5 of the case main body 3 which is the right end wall in FIG. 4 of the electric chamber 3a to insert and fix the tip of the bent pole 2a shown in FIG. A pole coupling portion 3da having a horizontal hole 3d is formed.

  As shown in FIG. 2, a polygonal cylindrical case body 3 having openings at the upper and lower ends in the figure is detachably coupled to the lower end of the upper lid 4 in the figure by screwing. The case body 3 is formed in a polygonal flat tube shape in which the planar shape of the upper end portion 3d coupled to the upper lid 4 is formed into a substantially oval shape that is the same shape and the same size as the oval shape of the planar shape of the upper lid 4. The side surface 3e is formed as an inclined surface that gradually decreases toward the lower end 3f in the drawing. A large opening (not shown) is formed in the upper end 3d of the case body 3 so as to pass through almost the entire upper end of the light source chamber 3c in the drawing.

  FIG. 1 is a bottom view of the lower end 3 f of the case body 3. As shown in FIG. 1, the case body 3 is inserted with the front end of, for example, a straight rod-shaped pole 2 shown in FIG. 2 at the lower end 3f of the rear end (right end in FIG. 1) 3g on the electric chamber 3a side. Thus, a pole coupling portion 3i having a pole insertion vertical hole 3h to be fixed is formed. On the other hand, the case body 3 is formed with a polygonal opening 3k having chamfered corners of a horizontally long rectangle on the front end portion (left end portion in FIG. 1) 3j side. A light transmissive plate 5 made of tempered glass, which is an example of a light transmissive body, is disposed in the opening 3k, and the light source chamber 3c is hermetically and airtightly sealed. In the light source chamber 3c, a plurality of LED optical units 6, 6,... Are arranged in a plurality of rows, for example, four rows in FIG.

  These LED optical units 6, 6,... Are required symmetrically in the left and right (up and down in FIG. 1), with the center axis O passing through the center of the four rows in the front-rear direction of the case body 3 (left and right in FIG. 1) as the symmetry axis. A number, for example, 5 units are arranged.

  These LED optical units 6, 6,... Are arranged in a required number, for example, two in parallel in the axial direction of the central axis O, for example, on the inside in (center axis O side) of the array. A required number, for example, three units are arranged in parallel in the axial direction of the central axis O on the outer side out. The LED optical units 6, 6,... Arranged on the left and right are arranged so that the irradiation openings 6g are crossed toward the opposite sides in the left-right direction, so that the irradiation light from these LED optical units 6, 6,. It intersects at the bottom.

  As shown in FIG. 8, by joining the upper lid 4 and the case body 3, the internal space is formed in a light source housing portion 7 that houses a plurality of LED optical units 6, 6,. The LED optical units 6in in the array are arranged above the LED optical units 6out in the outer array, that is, at a higher position (upper stage), and the inner and outer LED optical units 6in and 6out arranged in the left and right in FIG. They are arranged in the shape of a square Suehiro toward the bottom in the figure and arranged in the shape of a cross. Further, each inner LED optical unit 6in irradiates the vicinity so that the optical axis La of the irradiated light is at a required angle θa (for example, 50 °) with respect to the upper surface in FIG. Fixed in an inclined state. Each outer LED optical unit 6out is inclined so that the optical axis Lb of the irradiated light is at a required angle θb (for example, 60 °) with respect to the upper surface in FIG. It is fixed in the state.

  As shown in FIGS. 1 and 8 to 13, each LED optical unit 6 includes an LED (light emitting diode) module 6 a that is an example of a light emitting unit, a ceramic substrate 6 b that is an example of a support substrate thereof, and a pair of upper and lower parts in FIG. 10. Plane mirrors 6c and 6d, a pair of left and right side surface curved mirrors 6e and 6f in FIG. 10, and a reflecting tube 6i configured as a trumpet-shaped rectangular tube by integrally or integrally coupling these four mirrors 6a to 6f. . The reflection cylinder 6i has a rectangular irradiation opening 6g that expands in a trumpet shape and a reduced diameter side bottom portion 6j that decreases in a trumpet shape on the opposite side in the axial direction.

  As shown in FIG. 10, the LED module 6a is configured as a blue-yellow pseudo white light emitting diode by, for example, COB (Chip On Board). That is, the LED module 6a arranges, for example, a required number (for example, 196) of blue light emitting LED (light emitting diode) bare chips in a matrix of required columns (for example, 14 rows and 14 columns) on a printed circuit board on which a circuit is formed. Then, a resin containing a yellow-emitting phosphor is applied onto these LED bare chips and sealed with a silicone resin. The LED module 6a configured as described above is fixed to, for example, a silicone resin on the substantially central portion of the front surface 6bc of the ceramic substrate 6bC.

  That is, as shown in FIG. 11A, the ceramic substrate 6b has its rear side end fitted into the fitting opening 9k of the unit support plate 9, and in this fitted state, the LED module 6a emits light. The LED module 6a is fixed to the ceramic substrate 6b so that the surface 6aa protrudes slightly from the inner bottom surface 6jc of the reduced diameter side bottom portion 6j of the reflecting cylinder 6i in the drawing, ie, slightly forward and exposed to the outside. Therefore, the light emitting surface 6aa of the LED module 6a is configured to protrude slightly forward from the front surface 6bc of the reduced diameter side bottom portion 6j of the reflecting tube 6i in this fixed state. FIG.11 (b) is a longitudinal cross-sectional view which shows the modification of positioning of the ceramic substrate 6b shown to the Fig.11 (a). In this modification, the depth of the fitting opening 9k of the unit support plate 9 into which the ceramic substrate 6b is fitted is formed deeper than the fitting opening 9k shown in FIG. The front surface 6bc on the upper surface in the drawing may be configured to be flush with the front surface 9a of the unit support plate 9 so as to be flush with each other.

  As shown in FIG. 12, the trumpet-shaped reflecting tube 6i includes a pair of left and right side surface curved mirrors 6e and 6f formed by bending a flat plate of aluminum or the like at a required angle and making the inner surface a reflecting surface such as a mirror surface. The curved reflection surface is formed so as to gradually expand toward both sides in the width direction of the road to be illuminated, and the light distribution irradiated from the LED module 6a in the width direction of the road is mainly controlled. To do. That is, the LED optical units 6, 6,... Mainly control the light distribution characteristics in the road width direction along the axial direction of the central axis O as shown in FIG. In FIG. 1, the portions of the side curve mirrors 6e and 6f indicated by a plurality of parallel vertical lines indicate the curved inner surfaces (that is, the reflection surfaces) of the side curve mirrors 6e and 6f, respectively.

  On the other hand, the reflecting cylinder 6i has a pair of upper and lower flat mirrors 6c and 6d made of aluminum integrally coupled to a pair of left and right side surface mirrors 6e and 6f as shown in FIGS. 12 and 13, and directed toward the illumination opening 6g. The bottomed trumpet-shaped rectangular tube that gradually expands is formed on the reflecting tube 6i. As shown in FIGS. 10 and 12, the trumpet-shaped opposite cylinder 6i is formed with a fitting opening 6k to be fitted with the ceramic substrate 6b at the center of the reduced diameter side bottom 6j. The ceramic substrate 6b is accommodated in the fitting opening 6k. At the time of this accommodation, as shown in FIG. 11, the front surface 6bc of the ceramic substrate 6b is substantially flush with the inner surface 6jc of the bottom 6j of the reflecting tube 6i. The pair of upper and lower plane mirrors 6c and 6d have their inner surfaces formed as reflecting surfaces such as mirror surfaces, and are arranged in parallel substantially at a predetermined interval in the vertical direction in the figure, so that the irradiation from the irradiation opening 6g to the outside is performed. It does not control to expand the irradiated light. Further, as shown in FIG. 9, the pair of upper and lower plane mirrors 6c and 6d form heat radiation holes h and h in the vicinity of the LED module 6a, respectively.

  The plane and side mirrors 6c to 6f are configured such that when the apparatus main body A is arranged at a height of about 10 m above the ground by the pole 2, the primary reflected light is collected at a height of about 7 m above the ground. Has been.

  The back surface of the ceramic substrate 6b is formed on the front surface 9a of a unit support plate 9 made of a metal rectangular flat plate such as aluminum shown in FIGS. 9, 11A, 11B, 12 and 13. It is fitted in the fitting opening 9k. In this fitted state, the front surface of the ceramic substrate 6b is elastically supported by the free ends of a pair of upper and lower leaf springs 8a and 8b, which is an example of a presser. One end opposite to the free ends of the leaf springs 8a and 8b is fixed to the unit support plate 9 by screws. That is, the ceramic substrate 6b is elastically sandwiched between the pair of upper and lower leaf springs 8a and 8b and the unit support plate 9 in the thickness direction.

  The upper and lower ends of the leaf springs 8a and 8b are fixed to the upper and lower ends of the bottom portion 6j of the reflecting tube 6i by screws. The inner end portions of these leaf springs 8a and 8b protrude on the front surface of the ceramic substrate 6b, and slits 8aa and 8ba extending in the vertical direction in FIG. Each of the slits 8aa and 8ba is formed and inserted into the slits 8aa and 8ba, respectively, by inserting vertically elongated engaging small projections 6ba and 6bb respectively protruding from the upper and lower ends of the front surface of the ceramic substrate 6b. I support it. In FIG. 10, reference numeral 6h denotes a power feeding connector that is electrically and detachably connected to the LED module 6a. The connector 6h is electrically connected to a power supply terminal in the electric chamber 3a by a lead wire l.

  As shown in FIGS. 9 and 13, the LED optical unit 6 has a plurality of heat radiation fins 9 c, 9 c,... Made of metal such as aluminum on the back surface 9 b of the unit support plate 9. The outward projecting lengths of the heat dissipating fins 9c, 9c,... May be the same, respectively, and as shown in FIGS.

  As shown in FIG. 9, a plurality of the LED optical units 6 configured as described above are detachably attached to the belt-like unit attachment plate 10 with bolts, screws Sa, or the like.

  That is, the unit mounting plate 10 has a rectangular insertion hole 10a through which the plurality of heat radiation fins 9c, 9c,. The support plate 9 of the LED optical unit 6 is detachably fixed to the unit mounting plate 10 with screws S in a state where a plurality of heat radiation fins 9c, 9c,... Are inserted into the insertion holes 10a. For example, two unit mounting plates 10 are arranged side by side in the inner LED optical unit 6in, and three units are arranged side by side in the outer LED optical unit 6out. These unit mounting plates 10 are fixed to required portions on the inner surface of the upper lid 4. That is, all the LED optical units 6, 6,... Are detachably fixed to the inner surface of the upper lid 4. At the time of fixing, at least a part of the unit support plate 9 of the LED optical units 6, 6,... Is brought into contact with the inner surface of the upper lid 4 directly or via a heat radiating body such as a metal plate or a heat pipe with high heat dissipation. The heat dissipation is improved. When a failure such as non-lighting occurs in a part of the LED optical units 6, 6,... Thus configured, the central axes O of the remaining LED optical units 6, 6,. Is provided with a plurality of power supply systems, for example, two systems electrically connected to the LED optical units 6, 6,...

  According to this, even if one power supply system is interrupted for some reason, the LED optical units 6, 6,... can do.

  Further, the plurality of power supply systems may be connected to the LED optical units 6, 6,... So as to maintain the left-right symmetry of lighting of the LED optical units 6, 6,. .

  For example, two power supply systems are provided, one of which is connected to four inner LED optical units 6in, 6in,... And the other system is connected to six outer LED optical units 6out, 6out,. May be. According to this, even if one system is cut off, one of the inner or outer LED optical units 6in, 6out,... Can be turned on, and the left-right symmetry at the time of lighting is maintained. Can do.

  The plurality of power lines are connected to the secondary side of the power terminal block in the electric chamber 3a of the case body 3, and a primary power line (not shown) is electrically connected to the primary side of the power terminal block. Connected. This primary side power line passes through the hollow pole 2 and is electrically connected to a power unit (not shown). The power supply device includes a lighting circuit for the LED optical units 6, 6,..., And a control device (not shown) for controlling the lighting. The power supply device is housed in a box-shaped case (not shown), and is disposed on the outer surface of the pole 2 at a height above the ground where workers can easily work on the ground.

  Next, the effect | action of this illuminating device 1 is demonstrated.

  When the LED modules 6a of the LED optical units 6, 6,... Are energized by a plurality of power supply lines, the LED modules 6a emit, for example, white light. The white light is reflected by the pair of upper and lower plane mirrors 6c and 6d and the pair of left and right side mirrors 6e and 6f, and is irradiated from the irradiation opening 6g to the light transmissive plate 5 side. Irradiated to the road.

  By the way, the light reflected by the pair of upper and lower plane mirrors 6c and 6d is arranged substantially in parallel with each other because the pair of upper and lower plane mirrors 6c and 6d are arranged substantially parallel to each other, and mainly in the longitudinal direction of the road. Irradiated. On the other hand, the white light reflected by the pair of left and right side curve mirrors 6e and 6f is mainly irradiated in the width direction of the road because the side curve mirrors 6e and 6f are expanded in the width direction of the road. The Therefore, the irradiation angle irradiated in the width direction of the road can be controlled by the spread angle of the pair of left and right side curved mirrors 6e and 6f.

  That is, since this illumination device 1 can control the irradiation angle in the width direction of the road for each LED optical unit 6, the light distribution in the road width direction as leakage light is distributed for each LED optical unit 6. Light leakage can be reduced by appropriate control. Thereby, the illumination rate of the illuminated area can be improved and the target illuminance can be obtained with low power.

  Further, the primary reflected light reflected by the side curve mirrors 6e and 6f is condensed within the width of the road by appropriately adjusting the shape and the spread angle of the side curve mirrors 6e and 6f of the LED optical unit 6. Can do. Moreover, when the ground height of the illuminating device 1 is installed at a height of, for example, 10 m above the ground by the height of the pole 2, the primary reflected light can be condensed within a range of 7 m above the ground.

  Further, the irradiation points in the road width direction of the plurality of LED optical units 6, 6,... Can be made the same, and the irradiation directions can be distributed so as to have an even luminance distribution in the road longitudinal direction.

  As shown in FIG. 8, the illumination apparatus includes both the inner LED optical units 6in, 6in,... For near illumination and the LED optical units 6out, 6out,. Both near and far 1 can be illuminated. Moreover, as shown in FIG. 1, LED optical units that form a pair of near-distance and far-distance LED optical units 6, 6,... On the left and right of the symmetry axis (center axis O) (up and down in FIG. 1). 6, 6... Are arranged to form two sets, and these two sets are arranged symmetrically, and as shown in FIG. Since they are inclined and face each other, the light distribution of the light emitted from the translucent plate 5 to the outside can be expanded in the shape of a letter C, the illumination area can be enlarged, and in the vicinity below the translucent plate 5, Since the irradiation light is crossed, the brightness of the near irradiation can be improved.

  Further, the LED optical units 6in, 6in,... For proximity illumination are arranged above the LED optical units 6out, 6out,. Are heated by the heat radiation of the LED optical units 6out, 6out,... For distant illumination and become higher than the outer LED optical units 6out, 6out,. The impact is small. Moreover, since the irradiation lights of the left and right LED optical units 6, 6,... Intersect each other, the brightness of the vicinity is originally high, so that the light output of the LED module 6a of the proximity irradiation LED optical units 6in, 6in is increased by the temperature rise. Even if it falls, the influence of the reduction of near irradiation light is still lower.

  On the other hand, the LED optical units 6out, 6out,... For distant illumination that require high light output are located below the LED optical units 6in, 6in,. The degree of heating by the heat radiation of the units 6in, 6in,. For this reason, the fall of light output can be suppressed low by temperature rising.

  Further, as shown in FIG. 1, the LED optical units 6, 6,... Are arranged side by side so that a pair of upper and lower plane mirrors 6c, 6d in FIG. The length of the light distribution irradiated in the longitudinal direction can be increased.

  Further, the near-illumination LED optical units 6in, 6in,... And the far-distance LED optical units 6out, 6out,... Are arranged in two upper and lower stages. Can be achieved. Furthermore, since a small, light, and high output LED is used as the light source, it is possible to achieve a small size, light weight, and high output.

  Further, when rain, snow, dust, dust, dead leaves, etc. fall on the upper surface of the upper lid 4, these are the downward curved surface in the front-rear direction of the upper lid 4 and the width direction as indicated by arrows in FIG. 3. Since it slides down due to the downward curved surface, accumulation of these can be reduced. For this reason, maintenance can be reduced.

  Furthermore, since the upper lid 4 is formed with a pair of ridges 4c, 4d and a curved recess 4e, the surface area is increased, so that heat dissipation can be improved. Further, the light source chamber 3 in the upper lid 4

The natural convection in c can be promoted to improve heat dissipation.

  In addition, although the said embodiment demonstrated the case where 10 LED optical units 6, 6, ... were provided, this invention is not limited to the number, The number of 10 or more may be sufficient. . Furthermore, the distribution of the number of units arranged on the left and right of the symmetry axis O is not limited to five to five, but it is desirable that the units be arranged symmetrically.

  Further, each LED optical unit 6 is unitized by assembling the LED module 6a, the plane mirrors 6c and 6d and the side curved mirrors 6e and 6f, the ceramic substrate 6b, the unit support plate 9, and the heat sinks 9c and 9c to form a unit. Since each LED optical unit 6 can be replaced, it can be replaced. For this reason, even when a defect occurs in a part of the LED optical unit 6, the cost can be reduced as compared with the case where the entire lighting device 1 is replaced. Moreover, various light distribution requirements can be easily met by changing the shapes of the plane mirrors 6c and 6d and the side curve mirrors 6e and 6f. Further, since each of the LED optical units 6, 6,... Has the heat sinks 9c, 9c, the heat dissipation of the heat generated by the LED chip can be improved. Furthermore, since these heat sinks 9c and 9c are in contact with the inner surface of the upper lid 4 so as to be able to transfer heat, heat can be radiated from the upper lid 4 to the outside, so that further improvement in heat dissipation can be achieved.

  Furthermore, since the LED module 6a is housed in the housing recess of the ceramic substrate 6b having high heat conductivity, the heat dissipation against heat generation of the LED module 6a can be improved. Further, since the fragile ceramic substrate 6b is elastically supported by the pair of leaf springs 8a and 8b without being screwed, damage to the ceramic substrate 6b can be reduced. Further, the light emitting surface 6aa of the LED module 6a is substantially flush or slightly in front of the front surface bc (front surface) of the ceramic substrate 6b, or the front surface 6bc of the ceramic substrate 6b and the front surface 9a of the unit support plate 9 are almost flush with each other. Therefore, the light emission of the LED module 6a can be reflected by the front surface of the white ceramic substrate 6b and the side curved mirrors 6e and 6f, and thus the reflection efficiency can be improved accordingly.

  Then, as shown in FIG. 3, the outer surface shape of the upper lid 4 is formed in a streamline shape that can reduce the air resistance against the airflow that flows in the width direction and the longitudinal direction on the outer surface. The wind pressure of the apparatus 1 can be reduced. As a result, it is possible to improve both the strength of the poles 2 and 2a themselves supporting the lighting device 1 and the support strength of the embedded foundation. One of the pole insertion horizontal hole 3d and the pole insertion vertical hole 3d is sealed by a blocking plate (not shown) when not in use.

  FIG. 15 is a bottom view of the lighting apparatus 1A according to the second embodiment of the present invention. This illuminating device 1A is a road lamp that is preferably used for roads such as a cross intersection, and each LED optical unit 6 in the illuminating device 1 according to the first embodiment is replaced with a second LED optical unit 6A. It has the main features at the point of replacement.

  The second LED optical unit 6A replaces the flat mirrors 6c and 6d and the side curve mirrors 6e and 6f with the four-surface reflecting mirrors 6Ac6Ad, 6Ae and 6Af shown in FIG. On the other hand, it has a main feature in that it includes a front irradiation LED optical unit 6F shown in FIG. 21 and a rear irradiation LED optical unit 6B shown in FIG. Therefore, in FIGS. 15 to 23, the same or corresponding parts are denoted by the same reference numerals, and a part of the description is omitted.

  That is, as shown in FIG. 15, the plurality of second LED optical units 6A, 6A,... Are accommodated in a plurality of rows, for example, 4 rows in FIG.

  The second LED optical units 6A, 6A,... Have left and right (up and down in FIG. 15) with a center axis O passing through the center of the four rows in the front-rear direction (left and right direction in FIG. 15) of the case body 3 ) The required number, for example, 5 units are arranged symmetrically.

  The second LED optical units 6A, 6A,... On each one side are arranged in a required number, for example, two in parallel in the axial direction of the central axis O, for example, inside the array in (the central axis O side). The required number, for example, three units are arranged side by side in the axial direction of the central axis O on the outside out. These LED optical units 6A, 6A,... Arranged on the left and right are irradiated from the second LED optical units 6A, 6A,. Light crosses underneath.

  Further, as shown in FIG. 23, by joining the upper lid 4 and the case body 3, the internal space is formed in the light source accommodating portion 7 that accommodates the plurality of second LED optical units 6A, 6A,. In the unit 7, the inner LED optical units 6in are arranged above the LED optical units 6out in the outer arrangement, that is, at a higher position (upper stage), and the inner and outer LED optics arranged on the left and right in FIG. The units 6in and 6out are arranged in the shape of a wide-angled Suehiro toward the lower side in the figure and arranged in the shape of a cross, and the irradiation light of the LED optical units 6in and 6out in the left and right inner and outer arrays Cross at the bottom in the figure. Each inner LED optical unit 6in irradiates the vicinity so that the optical axis La of the irradiated light is at a required angle θa (for example, 50 °) with respect to the upper surface in FIG. Fixed in an inclined state. Each of the outer LED optical units 6out is inclined so that the optical axis Lb of the irradiated light is at a required angle θb (for example, 60 °) with respect to the upper surface in FIG. It is fixed in the state.

  As shown in FIG. 18, each LED optical unit 6A includes an LED (light emitting diode) module 6a that is an example of a light emitting unit, a ceramic substrate 6b that is an example of a support substrate thereof, and four reflections on the outer peripheral four sides of the ceramic substrate 6b. It is enclosed in a rectangular shape by mirrors 6Ac, 6Ad, 6Ae, 6Af. These reflecting mirrors 6Ac, 6Ad, 6Ae, 6Af are formed of aluminum sheet metal or the like, and each inner surface is formed on a reflecting surface by mirror finishing.

  As shown in FIG. 19, the reflecting mirrors 6Ac to 6Af have different shapes and heights. For example, one of 6Ac and 6Ae, 6Ad and 6Af, and 6Ae and 6Af are lower than the other 6Ac and 6Ad. (6Ae> 6Ac, 6Af> 6Ad) By irradiating the upper part of the light reflected by one of the reflecting mirrors 6Ac, 6Ad, which is high, without reflecting again by the opposing reflecting mirrors 6Ac, 6Ad, Light is emitted farther away.

  For this reason, as shown in FIGS. 15 and 16, each second LED optical unit 6A is substantially parallel to the central axis O (symmetry axis) and is located on the central axis O side in each LED optical unit 6A. The reflecting surface 6Ac is the highest reflecting mirror 6Ac among the reflecting mirrors 6Ac to 6Ad.

For this reason, in FIGS. 15 and 16, light can be emitted farther outward in the left-right direction.

  The LED module 6a shown in FIG. 18 is configured as a blue-yellow pseudo white light emitting diode by, for example, COB (Chip On Board). That is, the LED module 6a arranges, for example, a required number (for example, 196) of blue light emitting LED (light emitting diode) bare chips in a matrix of required columns (for example, 14 rows and 14 columns) on a printed circuit board on which a circuit is formed. Then, a resin containing a yellow-emitting phosphor is applied onto these LED bare chips, sealed with a silicone resin, and fixed on the substrate with, for example, a silicone resin.

  The ceramic substrate 6b is fixed to the front surface of the LED module 6a by an adhesive silicone resin with the light emitting surface 6aa slightly protruding forward from the front surface of the ceramic substrate 6b and exposed to the outside. Further, the light emitting surface 6aa of the LED module 6a is configured to protrude slightly forward from the front surface of the white ceramic substrate 6b in this fixed state.

  As shown in FIG. 18, in the second LED optical unit 6A, the LED module 6a is decentered toward the lower reflection mirror 6Ae facing the reflection mirror 6Ac having the highest height. This is because the LED module 6a, which is the light source, is moved away from the highest reflection mirror 6Ac that can irradiate reflected light farther than the low reflection mirror 6Ae, thereby reducing the reflection angle at the reflection mirror 6Ac, and the reflection by the reflection mirror 6Ac. The light irradiation distance can be extended.

  FIG. 20 is a schematic diagram showing the reflecting action of the reflecting mirror 6Ac having a high height of the LED optical unit 6A and the reflecting mirror 6Ae facing and facing the reflecting mirror 6Ac. As shown in FIG. 20, when the light of the LED module 6a of the light emitting unit is reflected by the reflection mirror 6Ae having a low height, the reflected light is reflected again by the reflection mirror 6Ac having a high height facing the reflection mirror 6Ae, 4 is irradiated relatively near the inner side (in) in the width direction (left-right direction in FIG. 20). In this near irradiation, the light emission of the LED module 6a is reflected twice by the low reflection mirror 6Ae and the high reflection mirror 6Ac, so that the light flux is slightly reduced due to the reflection loss, but the vicinity is irradiated because it is irradiated in the vicinity. As a result, the intensity is sufficient.

  On the other hand, when the light from the LED module 6a is reflected by the reflection mirror 6Ac having a high height, the reflection mirror 6Ac having a high height is located farther from the LED module 6a than the one reflection mirror 6Ae. Therefore, the incident angle of light incident on the high reflection mirror 6Ac is reduced. For this reason, the reflection mirror 6Ac reflects the light with a small reflection angle and irradiates the outer side of the upper lid 4 in the width direction. In this case, since the reflection at the reflection mirror 6Ac is performed once, the luminous flux due to the reflection is stronger than that in the vicinity irradiation, and it is possible to irradiate to that distance.

  The plurality of LED optical units 6A are arranged symmetrically in the figure with respect to the center axis in the width direction extending in the longitudinal direction (front and back direction in the drawing of FIG. 20) in the width direction in the upper lid 4. Therefore, the uniformity of the illuminance on the horizontal plane immediately below the upper lid 4 in FIG. 20 can be improved.

  The plurality of LED optical units 6A, 6A respectively disposed on one side with respect to the central axis in the width direction of the upper lid 4 are arranged in two upper and lower stages in the figure, and are adjacent to each other in the width direction of the upper lid 4. Since the units 6A and 6A have steps, it is possible to prevent or reduce the occurrence of shadows by the irradiation light emitted from the LED optical units 6A and 6A being blocked by the one LED optical unit 6A.

  This schematic diagram shows the reflecting action of the reflecting mirrors 6Ac and 6Ae. Similarly, the reflecting mirrors 6Ad and 6Ad of the LED optical unit 6A are also irradiated with back (far) illumination by reflecting mirrors having different heights. Back (near) irradiation can be performed.

  When the back surface of the ceramic substrate 6b is disposed in the fitting opening 6k formed on the front surface 9a of the unit support plate 9 made of a rectangular metal plate such as aluminum shown in FIG. The front surface 6bc is elastically supported by a pair of upper and lower leaf springs 8a and 8b which are an example of a presser screwed to the unit support plate 9. That is, the ceramic substrate 6b is elastically sandwiched between the pair of upper and lower leaf springs 8a and 8b and the unit support plate 9 in the thickness direction.

  The upper and lower ends of these leaf springs 8a and 8b are fixed to the upper and lower ends of the unit support plate 9 by screws. A plurality of the LED optical units 6 configured as described above are detachably attached to the belt-like unit attaching plate 10 by bolts, screws Sa, or the like. For the second inner LED optical unit 6Ain (upper stage), for example, two unit mounting plates 10 are arranged side by side, and for the outer LED optical unit 6Aout (lower stage), for example, three units are arranged side by side. ing. These unit mounting plates 10 are fixed by screws to mounting bosses that are integrally projected on the inner surface of the upper lid 4 and are fixed at required positions. That is, all the second LED optical units 6A, 6A,... Are detachably fixed to the inner surface of the upper lid 4. At the time of fixing, at least a part of the unit support plate 9 of the second LED optical unit 6A, 6A,... Is directly on the inner surface of the upper lid 4 or a heat radiating body such as a metal plate or a heat pipe having high heat dissipation. Contact is made to improve heat dissipation.

  A plurality of power supply systems, for example, two systems, are provided for the second LED optical units 6A, 6A,. In other words, a plurality of power supply systems may be provided separately on the left and right sides of the second LED optical units 6A, 6A,. According to this, even if there is a failure in one system, if there is no failure in the other system, one of the left and right second LED optical units 6A, 6A,. Can be prevented.

  The second LED optical unit 6A includes a front irradiation LED optical unit 6F shown in FIG. 21 and a rear irradiation LED optical unit 6B shown in FIG. As shown in FIG. 21, the front-illuminated LED optical unit 6F has a wedge-like shape that inclines the light emitting surface 6aa of the LED module 6a and the front surface 6bc of the ceramic substrate 6b toward the front F, that is, the opposite side of the pole 2 of the column. A front spacer 11 is provided. The spacer 11 is preferably a material having excellent heat dissipation, such as aluminum die casting.

  As shown in FIGS. 15 and 16, the front-illuminated LED optical unit 6F is arranged in two stages on the upper and lower sides (inner and outer) in the rear part of the case body 3, and four pairs on the left and right, that is, a total of eight units are arranged. ing.

  On the other hand, as shown in FIG. 22, the back-illuminated LED optical unit 6B has a wedge-shaped rear spacer 12 made of aluminum die casting or the like that inclines the light emitting surface 6aa of the LED module 6a and the front surface 6bc of the ceramic substrate 6b toward the rear B. It has. The back-illuminated LED optical unit 6B is provided in a pair at the front in the case body 3 as shown in FIGS.

  FIG. 24 shows light distribution characteristics when one lighting device 1A according to the second embodiment configured as described above is erected outside the corner of a cross road intersection, for example. The lighting device 1A is erected with its head facing the center OA of the road intersection.

  The light distribution characteristic of the lighting device 1A is that the left and right rear light distributions when the left and right rear illumination LED optical units 6B and 6B arranged at the front part of the case body 3 are irradiated in the left and right directions, respectively. 13a and 13b, and four pairs of left and right arranged at the rear of the case body 3, and a front light distribution 14 when irradiated to the front F by a total of eight front irradiation LED optical units 6F, 6F,.

  Therefore, the light distribution of the lighting device 1A is a substantially elliptical combined light distribution 15 in which the substantially triangular front light distribution 14 and the rear light distributions 13a and 13b are combined. This combined light distribution 15 can illuminate in a substantially oval shape around one corner of the intersection road where the lighting device 1 is erected, and the two crossing pavements 16a, which are provided with the intersection center OA and the lighting device 1A, The area containing 16b can also be illuminated.

  FIG. 25 shows the combined light distribution 17 when four lighting devices 1A, 1A,... According to this combined light distribution 17, it is possible to illuminate within the radius including slightly behind the four illumination devices 1A, 1A,... From the intersection center OA, and illuminate all of the four transverse pavements 16a to 16d at the intersection. it can.

  FIG. 26 is a bottom view of a lighting apparatus 1C according to the third embodiment of the present invention. This illuminating device 1C is an illuminating device used as a road lamp or the like on, for example, a highway or a general road. The LED optical unit 6 in the illuminating device 1 according to the first embodiment is replaced with a third optical unit. It is characterized in that it is replaced with 6C.

  As shown in FIG. 29, in the third optical unit 6C, an LED (light emitting diode) module 6aC, which is an example of a light emitting unit, is integrally mounted on a ceramic substrate 6bC, which is an example of a support substrate.

  Similar to the first optical unit 6 shown in FIG. 10, the LED module 6aC is configured as a blue-yellow pseudo white light emitting diode by, for example, COB (Chip On Board). That is, in the LED module 6aC, for example, a required number (for example, 196) of blue light emitting LED (light emitting diode) bare chips is arranged in a matrix of required columns (for example, 14 rows and 14 columns) on a printed circuit board on which a circuit is formed. Then, a resin containing a yellow-emitting phosphor is applied onto these LED bare chips, sealed with a silicone resin, and fixed on the substrate with, for example, a silicone resin.

  That is, as shown in FIG. 30, the white rectangular flat plate-like ceramic substrate 6bC has the LED module 6aC fixed to the center of the front surface (upper surface in FIG. 30) with silicone resin. For this purpose, the light emitting surface 6aaC of the LED module 6aC is formed so as to slightly protrude above the front surface 6bcC (upper surface in FIG. 30) of the ceramic substrate 6bC.

  The ceramic substrate 6bC is integrally formed in advance on the front surface 6bcC by fixing the bottom surface in the figure of the deformed lens 20 covering almost the entire front surface (upper surface) of the LED module 6aC with a silicone resin. The optical unit 6C is configured. That is, the deformed lens 20 has a concave portion 20a that accommodates almost the entire LED module 6aC on the opposing surface (bottom surface) facing the LED module 6aC, and the outer peripheral edge portion (bottom surface) of the concave portion 20a is formed on the ceramic substrate 6bC. It is fixed on top with silicone resin.

  As shown in FIGS. 26 to 30, the deformed lens 20 has a spherical lens portion 20 c that protrudes integrally on a substantially central portion of a lens base 20 b having a light-transmitting planar plate having a rectangular flat plate shape. The spherical lens portion 20c is formed in a substantially oval shape in plan view, and a pair of hemispherical sphere portions 20ca and 20cb are integrally formed at both ends in the major axis direction, for example. A lens concave portion 20cc having a required height lower than that of the top of the spherical portions 20ca and 20cb is integrally formed in the middle portion in the longitudinal direction of the spherical lens 20 portion c which is a joint portion of the both spherical portions 20ca and 20cb. In FIG. 28, as indicated by arrows, the light emission of the LED module 6aC is mainly emitted outward in the longitudinal direction of the spherical lens portion 20c, and is also emitted in the lateral direction. In FIG. 30, l is a lead wire of the third optical unit 30.

  As shown in FIGS. 26 and 27, a plurality of third optical units 6 </ b> C configured in this way are fixed to a unit mounting plate 10 </ b> C made of, for example, an aluminum rectangular flat plate. That is, as shown in FIG. 29, the unit mounting plate 10C has a plurality of mounting step portions 10Cb, 10Cb,... Mounted on the surface 10Ca for mounting the plurality of third optical units 6C, respectively. These mounting steps 10Cb, 10Cb,... Are integrally projected so as to protrude toward the front surface 10Ca by pressing or the like from the back side of the unit mounting plate 10C. These mounting step portions 10Cb, 10Cb,... Are formed at inclination angles α1, α2, α3, α4 that are inclined downward from the rear R side to the front F side of the unit mounting plate 10C. These inclination angles α1 to α4 are arranged in a substantially arc shape in the width direction of the unit mounting plate 10C, for example, the three mounting step portions 10Cb, 10Cb,... Are all equal, and from the rear R side toward the front F side. For example, they are formed at 11 ° (α1), 9 ° (α2), 7 ° (α3), and 5 ° (α4), respectively.

  As shown in FIG. 30, each of the mounting step portions 10Cb is formed with an accommodation recess 10Cc for accommodating the ceramic substrate 6bC of each third optical unit 6C. Since each of the receiving recesses 10Cc has a depth substantially equal to the thickness of the ceramic substrate 6bC, the front surface bcC of the ceramic substrate 6bC when the ceramic substrate 6bC is received in the receiving recess 10Cc. (The upper surface in FIG. 30) is substantially flush with the upper surface in the drawing of the mounting step portion 10Cb.

  26 and 27, the plurality of mounting step portions 10Cb, 10Cb,... Are arranged on the unit mounting plate surface 10Ca, for example, in approximately 3 rows and 3 columns (however, the middle row is 4 columns). The case body 3 and the unit mounting plate 10C are arranged in a zigzag pattern, not in a straight line, in the width direction (short direction), that is, in the longitudinal direction of the road.

  Each optical unit 6C has screw insertion holes formed at, for example, a plurality of corners of the lens base portion 20b, and the unit mounting plate 10C is tightened by a plurality of fastening screws 21 and 21 inserted through these screw insertion holes. Are detachably mounted on each mounting step 10Cb.

  Therefore, as shown in FIGS. 26 and 27, the third optical units 6C, 6C,... Are staggered along the width direction (short direction) of the case body 3 and the unit mounting plate 10C, that is, along the longitudinal direction of the road. Arranged in a shape. For this reason, the light irradiated from the optical units 6C, 6C,... In the width direction (short direction) of the case body 3, that is, the longitudinal direction of the road,

The light shielding by the other adjacent optical units 6C, 6C,... Can be reduced, and an improvement in irradiation efficiency can be expected.

  As shown in FIG. 27, the unit mounting plate 10C is integrally provided with a flange 10Cd having a required width rising at a required height on the outer peripheral edge of the surface 10Ca. The flange 10Cd has a flange 10Cd as shown in FIG. Attaching insertion holes 22a, 22a through which the upper end portions of the plurality of columnar mounting bosses 22, 22,... Formed in the corner portion of the lower end portion of the case main body 3 forming one end portion of the apparatus main body A are inserted. Are formed at predetermined intervals in the circumferential direction.

  As shown in FIG. 31, the upper end portions of the mounting bosses 22, 22,... Are inserted through the mounting insertion holes 22a, 22a,. The unit mounting plate 10 </ b> C can be fixed to the case body 3 by tightening the set screws 23 in the screw holes. The side surface of the unit mounting plate 10C is in contact with the inner side surface of the case body 3, and heat generated by the third optical units 6C, 6C,... Is transmitted to the case body 3 through the unit mounting plate 10C. The heat is dissipated from the outside to the outside air. A translucent plate 5 made of tempered glass is fitted into the irradiation side opening 3 </ b> K of the case body 3.

  The case body 3 is configured in the same manner as the case body 2 according to the first and second embodiments, and the case body 3 is

An apparatus main body A is constructed by attaching an aluminum die-cast upper lid 4 on the upper open end 3d of the case body 3 by screwing or the like. The outer shape and configuration of the upper lid 4 are also formed in the same manner as the upper lid 4 according to the first and second embodiments.

  As shown in FIG. 31, the upper lid 4 has a power supply including a lighting circuit (not shown) that controls turning on / off the third optical units 6C, 6C,... A device 24 is attached. The power supply line and the control line (not shown) connected to the power supply device 24 are connected at the output side to the lead wire l shown in FIG. 28 of each optical unit 6C, 6C,. Is extended to the electrical chamber 3a at the rear end on the rear R side of the, and is connected to a power supply terminal and a control terminal (not shown).

  The power supply device 24 is configured by attaching a plurality of electrical components 24b and 24b constituting a lighting circuit, a power supply circuit, and the like to at least one surface of a substrate 24a made of an aluminum rectangular flat plate having heat dissipation and rigidity.

  The substrate 24a has a plurality of insertion holes through which the lower end portions in FIG. 31 of the plurality of columnar mounting bosses 25, 25,... Projecting from the inner surface of the upper lid 4 are inserted. The lower ends of the bosses 25, 25,... Are inserted, and the setscrews 26, 26,.

  When the LED modules 6aC, 6aC,... Of the third optical units 6C, 6C,... Are energized by the power line, the LED modules 6aC, 6aC,. This white light has an inclination angle α1 to α2 at which the mounting step portions 10Cb, 10Cb,... Of the unit mounting plate 10C fixing the third optical units 6C, 6C,. Since it is formed, it is irradiated mainly toward the front F, that is, the front in the road width direction.

  In addition, since the mounting step portions 10Cb, 10Cb,... Are gradually reduced in inclination angles α1 to α4 from the rear B side toward the front F, the third optical units 6C, 6C adjacent in the front-rear direction are disposed. ,... Can be reduced from light shielding.

  Further, these third optical units 6C, 6C,... Emit white light emitted from the LED modules 6aC, 6aC,... In the longitudinal direction of the deformed lens 20, that is, the width (short) direction of the case body 3, that is, the road. However, since the third optical units 6C, 6C,... Are arranged in a staggered manner in the road longitudinal direction, the third optical units 6C, 6C,. Can reduce the shading.

  Further, as shown in FIG. 31, since the side surface of the unit mounting plate 10C to which the plurality of third optical units 6C, 6C,... Are attached is in contact with the inner surface of the case body 3, the third optical unit 6C. , 6C,..., The heat generated in the LED module 6aC can be conducted to the case body 3 through the unit mounting plate 10C. For this reason, since heat can be radiated from the outer surface of the case body 3 to the outside air, it is possible to reduce the increase in temperature caused by the heat generated in the case body 3. As a result, the luminous efficiency of the LED module 6aC can be reduced by heat, and the deterioration of the life characteristics can be reduced.

  Further, the third optical units 6C, 6C,... That generate heat are disposed in the case body 3 on the lower side in FIG. 31 of the apparatus main body A, while the power supply device 24 that generates heat is disposed on the upper side in FIG. Since the power supply device 24 is arranged in the upper lid 4 and spaced apart in the vertical direction, the power source device 24 is also provided with the third optical units 6C, 6C,. The temperature rise temperature of 3 can be reduced.

  Further, when rain, snow, dust, dust, dead leaves, etc. fall on the upper surface of the upper lid 4, these are the downward curved surface in the front-rear direction of the upper lid 4 and the width direction as indicated by arrows in FIG. 3. Since it slides down due to the downward curved surface, accumulation of these can be reduced. For this reason, maintenance can be reduced.

  Furthermore, since the upper lid 4 is formed with a pair of ridges 4c, 4d and a curved recess 4e, the surface area is increased, so that heat dissipation can be improved. Moreover, natural convection in the light source chamber 3 in the upper lid 4 can be promoted to improve heat dissipation.

  In the above embodiment, the case where ten third optical units 6C, 6C,... Are provided has been described. However, the present invention is not limited to the number, and may be ten or more. But you can.

  Further, each third optical unit 6C is unitized by assembling the LED module 6aC, the ceramic substrate 6bC, and the deformed lens 20 integrally in advance, and is detachably attached to a unit mounting plate 10C disposed in the case body 3. Since it is provided, each optical unit 6C can be replaced. For this reason, even when a malfunction occurs in a part of the plurality of LED optical units 6B, 6B,..., The cost can be reduced as compared with the case where the entire lighting device 1C is replaced.

  Furthermore, since the LED module 6aC is supported by the highly heat-conductive ceramic substrate 6bC, it is possible to improve the heat dissipation against the heat generation of the LED module 6aC. Further, since the generally fragile ceramic substrate 6bC is fixed to the deformed lens 20 with silicone resin without being screwed, damage to the ceramic substrate 6bC can be reduced.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1, 1A, 1C ... Illuminating device, 2, 2a ... Pole (support | pillar), 3 ... Case main body (a part of apparatus main body), 3a ... Electric chamber, 3d ... Horizontal hole for pole insertion, 3h ... Vertical hole for pole insertion 3k ... opening, 4 ... upper lid (part of the apparatus main body), 4a ... top part, 4c, 4d ... a pair of protrusions, 4h ... curved concave part, 5 ... translucent plate, 6, 6A ... LED optical unit, 6a, 6aC ... LED module, 6aa, 6aaC ... LED module light-emitting surface, 6c, 6d ... plane mirror, 6e, 6f ... side curve mirror, 6Ac-6Ae ... reflection mirror, 6B ... back-illuminated LED optical unit, 6C ... third Optical unit, 6F: Front irradiation LED optical unit, 6in ... Inner LED optical unit, 6out ... Outer LED optical unit, 7 ... Light source housing, 8a, 8b ... A pair of leaf springs (pressers), 9 ... Unit Supporting plate, 9c, 9c ... radiation fins, 10,10C ... unit mounting plate 20 ... anomalous lens, A ... apparatus body.

Claims (1)

An illumination device for road lighting arranged along the longitudinal direction of the road,
A light emitting part having a light emitting element;
A lens base portion having a rectangular planar shape and a lens portion that is integrally formed so that two spherical lenses partially overlap in the longitudinal direction of the lens base portion and covers the light emitting portion;
A plurality of optical units having the light emitting part and the lens part;
A plurality of optical units are attached in such a manner that the longitudinal directions of the lens units of the optical units in adjacent rows are not overlapped in a plurality of rows in a direction in which the central axis in the front-rear direction and the longitudinal direction of the lens portions are orthogonal to each other, An apparatus main body provided with an irradiation unit having an opening for irradiating light from the optical unit to the outside;
Equipped with,
The lens portions of the plurality of optical units are arranged such that a longitudinal direction of the lens portions is arranged along a longitudinal direction of the road, and an interval between the adjacent lens portions on a straight line along the width direction of the road is the road. The illumination device is smaller than the interval between the adjacent lens portions on a straight line along the longitudinal direction .

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