JP5912703B2 - LED lamp - Google Patents

Description

The present invention relates to an LED lamp used for example as a mercury lamp replacement.

  FIG. 25 shows an example of a conventional LED lamp (see, for example, Patent Document 1). The LED lamp 900 shown in the figure has a configuration in which a plurality of LED modules 902 are mounted on a substrate 901, and is intended to be used as an alternative to a mercury lamp, for example. The LED module 902 includes an LED chip 903 and a case 904. The LED chip 903 is mounted on the case 904. The case 904 is provided with a mounting electrode (not shown). The LED module 902 having such a configuration is heated up to a predetermined temperature in a reflow furnace in a state where the mounting electrode is temporarily bonded to a wiring pattern (not shown) of the substrate 901 via a solder paste, for example. By being processed, so-called surface mounting is performed.

  A mercury lamp is used by being attached to the ceiling of a building such as a gymnasium. In this case, what is illuminated is the floor of the gymnasium. The floor of the gymnasium has a relatively large area. When the LED lamp 900 is used for such an application, it is required to illuminate the floor of the gymnasium more uniformly and every corner. However, since the LED lamp 900 has a plurality of LED modules 902 arranged discretely, it is difficult to emit light uniformly.

JP 2011-154844 A

  The present invention has been conceived under the circumstances described above, and it is an object of the present invention to provide an LED lamp lens unit and an LED lamp capable of realizing an LED lamp capable of more uniform illumination. To do.

  The LED lamp lens unit provided by the first aspect of the present invention is characterized in that each has a plurality of lenses arranged in a matrix while transmitting and emitting light from the light source unit.

  In preferable embodiment of this invention, the said lens is a Fresnel lens and the whole shape is plate shape.

  In a preferred embodiment of the present invention, each has a plurality of partition regions each including the Fresnel lens.

  In a preferred embodiment of the present invention, the overall shape is rectangular.

  In a preferred embodiment of the present invention, each of the partition regions has a rectangular shape.

  In a preferred embodiment of the present invention, the lens is formed on the entire surface of the inwardly partitioned area surrounded by the plurality of other partitioned areas.

  In a preferred embodiment of the present invention, the center of the partition region located inward is coincident with the center of the lens included in the partition region.

  In a preferred embodiment of the present invention, the center of the partition region located outside having a portion not surrounded by the other plurality of partition regions is more than the center of the lens included in the partition region. Located outside.

  In a preferred embodiment of the present invention, the partition region located outside has a non-lens portion in which the lens is not formed on the outer portion.

  In a preferred embodiment of the present invention, a lens is formed on the entire surface of the partition region located outside.

  The LED lamp provided by the second aspect of the present invention includes an LED lamp lens unit provided by the first aspect of the present invention, each emitting one or more LED chips and light from the LED chip. A plurality of the light source units having an emission surface.

  In a preferred embodiment of the present invention, each of the exit surfaces is smaller than the lens.

  In a preferred embodiment of the present invention, the distance between each lens and each light source unit is smaller than the focal length of each lens.

  In preferable embodiment of this invention, it has a several light source board | substrate with which each one part of the said several light source unit was mounted in each.

  In a preferred embodiment of the present invention, the one or more LED chips are directly mounted on the light source substrate.

  In a preferred embodiment of the present invention, each of the light source units covers the one or more LED chips and is excited by the light from the one or more LED chips, and thus has a wavelength different from that of the light from the LED chips. A fluorescent resin containing a fluorescent material that emits the light of.

  In a preferred embodiment of the present invention, each light source unit has a rectangular shape.

  In a preferred embodiment of the present invention, each light source unit has a plurality of the LED chips arranged in a matrix.

  In a preferred embodiment of the present invention, each of the plurality of light source substrates has an elongated rectangular shape and is spaced apart from each other in parallel.

  In a preferred embodiment of the present invention, the plurality of LED chips included in each light source unit are connected in parallel, and the plurality of light source units mounted on each light source substrate are connected in series. Has been.

  In a preferred embodiment of the present invention, a heat transfer plate to which the plurality of light source substrates are attached is provided.

  In preferable embodiment of this invention, the housing | casing which supports the said heat-transfer plate is provided.

  In a preferred embodiment of the present invention, the housing has an attachment opening facing the opposite side of the heat transfer plate to the side on which the plurality of light source boards are attached. An attachment is attached to the opening.

  In a preferred embodiment of the present invention, a protective plate is provided on the side opposite to the plurality of light source units with respect to the lens unit.

  According to such a configuration, the plurality of lenses are positioned in front of each of the plurality of light source units. Thereby, the light from the plurality of light source units is appropriately condensed by the plurality of lenses, and the emission state is not easily biased. Therefore, for example, the floor surface of a gymnasium can be illuminated more uniformly by the LED lamp.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the LED lamp based on 1st Embodiment of this invention. It is a perspective view which shows the LED lamp of FIG. It is a front view which shows the LED lamp of FIG. It is a bottom view which shows the LED lamp of FIG. It is a top view which shows the LED lamp of FIG. It is a principal part top view which shows the LED lamp of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is a top view which shows the lens plate of the LED lamp of FIG. It is a top view which shows the light source board | substrate of the LED lamp of FIG. It is a principal part enlarged plan view which shows the light source board | substrate of the LED lamp of FIG. It is a principal part enlarged plan view which shows the light source board | substrate of the LED lamp of FIG. It is a principal part expanded sectional view which follows the XII-XII line | wire of FIG. It is a circuit diagram which shows the light source board | substrate of the LED lamp of FIG. It is a top view which shows the high-intensity lighting state of the LED lamp of FIG. It is a top view which shows the low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the non-lighting state and low-intensity lighting state of the LED lamp of FIG. It is a top view which shows the other example of a lens plate. It is a top view which shows the LED lamp based on 2nd Embodiment of this invention. It is sectional drawing which shows an example of the conventional LED lamp.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 7 show an LED lamp according to a first embodiment of the present invention. The LED lamp 101 of the present embodiment includes a support member 200, a plurality of light source substrates 300, a plurality of light source units 500, a lens plate 701, a protective plate 750, and a resin frame 760. The LED lamp 101 has, for example, a plan view size of about 250 mm square, a height not including a stay 250 described later of about 90 mm, a weight of about 2 kg, a power consumption of about 95 W, and a total luminous flux of about 11000 lm. It is intended to be used as an alternative.

  The support member 200 includes a heat transfer plate 210 and a housing 220 and occupies most of the appearance of the LED lamp 101. The housing 220 includes a substantially rectangular shallow box-shaped accommodation recess 223 and a plurality of heat radiation fins 221. The housing recess 223 houses the plurality of light source substrates 300, the lens plate 701, the protection plate 750 and the resin frame 760. The plurality of heat dissipating fins 221 are radially arranged in a bottom view, and each has a mountain shape with a constricted shape as shown in FIGS. 2 and 3. In the present embodiment, the housing 220 is made of aluminum. As a material of the housing 220, aluminum is preferable for weight reduction and high heat dissipation, but it may be made of metal such as magnesium other than aluminum. Or you may comprise the housing | casing 220 by resin with comparatively high heat conductivity, and metal members, such as aluminum enclosed with this resin.

  The heat transfer plate 210 is attached to the housing 220 as shown in FIGS. 6 and 7, and in the present embodiment, has a substantially rectangular plate shape with a notch in part. In the present embodiment, the heat transfer plate 210 is made of aluminum. As a material of the heat transfer plate 210, aluminum is preferable for weight reduction and high heat dissipation, but it may be made of a metal such as magnesium other than aluminum.

  The support member 200 is not limited to the divided structure of the heat transfer plate 210 and the housing 220, and may be an integrally molded product having a portion corresponding to the heat transfer plate 210 and the housing 220, for example.

  In the present embodiment, a stay 250 is attached to the housing 220 of the support member 200. The stay 250 is formed by bending a metal plate, and is used for fixing the LED lamp 101 to a desired ceiling surface or wall surface.

  Further, the housing 220 of the present embodiment is formed with an opening 222 for attachment as shown in FIG. The attachment opening 222 opens on the side opposite to the side on which the housing recess 223 opens. An attachment 230 is attached to the attachment opening 222. The attachment 230 is used to attach the LED lamp 101 to a desired attachment target. The attachment 230 of the present embodiment is made of an insulating resin and has an annular portion that can be used to suspend the LED lamp 101. For example, when the LED lamp 101 is attached to a power supply portion to which an E39 type base compliant with the JIS standard is attached, an attachment 230 configured to conform to the E39 type standard may be attached to the housing 220.

  As shown in FIGS. 6 and 9, the plurality of light source substrates 300 are mounted with a plurality of light source units 500 and supported by the heat transfer plate 210 of the support member 200. As shown in FIGS. 9 to 12, the light source substrate 300 has a rectangular shape in plan view, and includes a base material 310, an insulating layer 311, a wiring pattern 320, and a resist layer 330. The base material 310 is made of aluminum, for example. The insulating layer 311 covers at least one surface of the substrate 310 and is made of, for example, an insulating resin or aluminum oxide film. The wiring pattern 320 is used to supply power to the light source unit 500 and is formed on the insulating layer 311. The resist layer 330 covers most of the base 310, the insulating layer 311 and the wiring pattern 320 that are exposed from the light source unit 500. In the present embodiment, the resist layer 330 is made of a white insulating resin. In the present embodiment, the four light source substrates 300 are arranged in parallel to each other. Each light source substrate 300 is fixed to the heat transfer plate 210 with screws.

  The plurality of light source units 500 are mounted on the light source substrate 300, and each includes a plurality of LED chips 510, a fluorescent resin 520 and a weir 530. In the present embodiment, four light source units 500 are arranged on each light source substrate 300 in a line along the longitudinal direction of the light source substrate 300. Thus, 16 light source units 500 are arranged in a matrix of 4 rows and 4 columns. In the present embodiment, the light source unit 500 has a rectangular shape in plan view, and has a rectangular emission surface 501. For example, white light is emitted from the emission surface 501. The dimension of the emission surface 501 is about 16 mm square, for example.

  The plurality of LED chips 510 are directly mounted on the light source substrate 300, are made of, for example, a GaN-based semiconductor, and emit blue light. The LED chip 510 of this embodiment is a so-called two-wire type, and is electrically connected to the wiring pattern 320 of the light source substrate 300 by two wires. The LED chip 510 is not limited to a two-wire type, and may be a so-called one-wire type or a flip-chip type. In the present embodiment, 30 LED chips 510 are provided in one light source unit 500. These 30 LED chips 510 are arranged in a matrix of 5 rows and 6 columns.

  The fluorescent resin 520 is made of a material in which a fluorescent material is mixed into a transparent resin, for example, and each covers the plurality of LED chips 510. In the present embodiment, the fluorescent material emits yellow light when excited by blue light from the LED chip 510. The light source unit 500 emits white light by mixing these blue light and yellow light. Of the fluorescent resin 520, the surface from which the white light is emitted is the emission surface 501 described above. The fluorescent resin 520 is surrounded by the weir 530. The weir 530 is a rectangular ring made of, for example, a white silicone resin, and is used to define a liquid resin material for forming the fluorescent resin 520 in a desired rectangular shape when the fluorescent resin 520 is formed.

  Each light source substrate 300 is provided with a connector 340. The connector 340 is electrically connected to the plurality of LED chips 510 via the wiring pattern 320. A cable 350 extends from the connector 340. The cable 350 connects the connectors 340 of the adjacent light source substrates 300. Further, some of the cables 350 extend to the bottom surface side of the housing 220 via cable grooves 224 formed in the housing 220 as shown in FIG.

  FIG. 13 is a circuit diagram of the light source substrate 300. In each light source unit 500, 30 LED chips 510 are connected in parallel to each other. The four light source units 500 are connected in series with each other. Further, the four light source substrates 300 are connected to each other in series. Thereby, the 16 light source units 500 are connected in series.

  The lens plate 701 is an example of a lens unit referred to in the present invention, and is disposed in front of the plurality of light source units 500 as shown in FIG. In the present embodiment, the lens plate 701 is a square plate of about 220 mm square made of a transparent material, and has 16 partition regions 710 as shown in FIGS. 5, 6, and 8. Each partition area 710 has a rectangular shape and is arranged in a matrix of 4 rows and 4 columns. The four partition regions 710 located inwardly surrounded by the other 12 partition regions 710 have a 41 mm square shape. The twelve partition regions 710 located outside that surround these four partition regions 710 located inward have portions that are not adjacent to the other partition regions 710. Of these twelve partition regions 710 located outside, the four partition regions 710 located at the four corners have a square shape of 55 mm square, and the four corners among the twelve partition regions 710 located outside. The eight partition regions 710 not located in the shape of 41 mm × 55 mm are rectangular.

  One Fresnel lens 711 is formed in each partition region 710. The Fresnel lens 711 is an aggregate of a large number of circular and annular lens surfaces, and functions to improve the directivity of light from the light source unit 500. In the present embodiment, the focal length of the Fresnel lens 711 is 50 mm. In plan view, the center of the four partitioned regions 710 located inward coincides with the center of the Fresnel lens 711 included therein. The centers of the Fresnel lenses 711 included in the twelve partition regions 710 located outside are shifted inward. As shown in FIGS. 5, 6 and 8, the centers of the 16 Fresnel lenses 711 and the centers of the 16 light source units 500 coincide with each other. Thereby, the 16 Fresnel lenses 711 are arranged in a matrix with an equal pitch. Further, the Fresnel lens 711 is larger than the light source unit 500 in plan view. The twelve partition regions 710 located outside have non-lens portions 712. The non-lens portion 712 is a portion sandwiched between the outer edge of the partition region 710 and the outer edge of the Fresnel lens 711 and is a portion that does not perform the lens function.

  The protection plate 750 is made of a transparent material, and is disposed on the opposite side of the light source unit 500 with respect to the lens plate 701. In FIG. 5, the protective plate 750 is omitted for convenience of understanding. The protection plate 750 is for protecting the lens plate 701. The resin frame 760 is a frame-shaped member made of an opaque resin, and fixes the protection plate 750 and the lens plate 701 to the housing 220.

  FIG. 14 is an image in a state where the LED lamp 101 is lit with high luminance. At this time, the LED lamp 101 has an appearance that the entire protective plate 750 emits light. FIG. 15 is an image in a state where the LED lamp 101 is lit with low luminance. From the figure, it can be clearly seen that the light from each light source unit 500 is emitted through the Fresnel lens 711 in each partition region 710. 14 and 15, the distance between the lens plate 701 and the light source unit 500 (distance H1 in FIG. 7) is 20 mm. In this case, the light distribution angle (half-value width) from the LED lamp 101 is about 55 ° on both sides, and about 58% of the light flux from the plurality of light source units 500 is emitted.

  16 to 22 are external images of the LED lamp 101 when the distance H1 between the Fresnel lens 711 and the light source unit 500 is changed. 16 to 22, the left image is in a non-lighting state, and the right image is in a low-luminance lighting state. 16 to 22, the protective plate 750 and the resin frame 760 are omitted for convenience of changing the distance H1 as appropriate.

  Table 1 shows the distance H1, the light distribution angle θ, and the emission ratio η of the LED lamp 101 shown in FIGS. The light distribution angle θ is obtained by measuring the half-value angle of light emitted from the LED lamp 101. The emission ratio η is the ratio of the luminous flux emitted from the LED lamp 101 through the lens plate 701 out of the luminous flux from the light source unit 500. It can be seen that as the distance H1 is shorter than the focal length (50 mm) of the Fresnel lens 711, the light distribution angle θ increases and the emission ratio η increases. When the LED lamp 101 is desired to be used in a state where the light distribution angle θ is large and the emission ratio η is high, it can be seen that the distance H1 may be made smaller than the focal length of the Fresnel lens 711. On the other hand, by narrowing the light distribution angle θ, it is understood that the distance H1 should be close to the focal length of the Fresnel lens 711 when it is desired to illuminate a limited portion of the illumination target in a concentrated manner.

  Next, the operation of the lens plate 701 and the LED lamp 101 will be described.

  According to the present embodiment, the plurality of Fresnel lenses 711 are positioned in front of each of the plurality of light source units 500. Thereby, the light from the plurality of light source units 500 is appropriately condensed by the plurality of Fresnel lenses 711, and the emission state is not easily biased. Therefore, for example, the floor surface of a gymnasium can be illuminated more uniformly by the LED lamp 101.

  By arranging the plurality of Fresnel lenses 711 in a matrix, light from the plurality of light source units 500 can be emitted more uniformly. Since the emission surface 501 of the light source unit 500 is smaller than the Fresnel lens 711 in plan view, more light emitted from the emission surface 501 can be incident on the Fresnel lens 711 located in front of the light emission unit 501. When a plurality of Fresnel lenses 711 are arranged as in the LED lamp 101, when light from the light source unit 500 in front of the adjacent Fresnel lens 711 enters a certain Fresnel lens 711, this light is appropriately collected. Not lighted. Such uncollected light travels in unintended directions and can undesirably illuminate areas that are not desired to be illuminated. Therefore, it is preferable for more light from each light source unit 500 to enter the Fresnel lens 711 positioned in front of the LED lamp 101 to uniformly illuminate the intended region.

  By adopting the Fresnel lens 711 as a lens referred to in the present invention and configuring the lens unit referred to in the present invention as a plate-shaped lens plate 701, the LED lamp 101 can be thinned. For example, as a method for realizing the LED lamp 101 in the state shown in FIG. 22, a method in which the distance H1 remains 20 mm and the focal length of the Fresnel lens 711 is about 20 mm can be employed. Thereby, thickness reduction of the LED lamp 101 can be achieved. Further, if a lens having a different focal length is used as the Fresnel lens 711, for example, it is not necessary to remake the housing 220, and the cost can be reduced.

  By making the LED lamp 101, the lens plate 701, the plurality of partition regions 710, and the plurality of light source units 500 rectangular, the plurality of partition regions 710 and the plurality of light source units 500 do not have an undue gap between them. Can be reasonably arranged. This contributes to uniform illumination by the LED lamp 101.

  By making the center of each Fresnel lens 711 coincide with the center of the light source unit 500, the light from the light source unit 500 can be appropriately condensed. By making the centers of the four partitioned areas 710 positioned inward and the centers of the Fresnel lenses 711 included therein coincide with each other, light can be emitted uniformly from these partitioned areas 710. On the other hand, by shifting the center of the Fresnel lens 711 included therein with respect to the centers of the twelve partition regions 710 located outward, the sixteen light source units 500 (exit surfaces 501) are shifted inward. The center and the center of the 16 Fresnel lenses 711 are configured to coincide with each other. This is preferred for uniform illumination. In addition, by shifting the center of the Fresnel lens 711 included therein to the center of the twelve partition regions 710 located outward, the center of the light source unit 500 spreads outward to some extent. The Fresnel lens 711 is also located in the region. Thereby, more light from the plurality of light source units 500 can be made incident on the plurality of Fresnel lenses 711.

  By arranging the plurality of light source substrates 300 apart from each other, for example, a cost reduction can be achieved as compared with a configuration in which one light source substrate having a size equivalent to the lens plate 701 is employed. Since each light source unit 500 includes the plurality of LED chips 510, more uniform light can be emitted from the entire emission surface 501. Arranging the plurality of LED chips 510 in a matrix is suitable for emitting more uniform light from the entire emission surface 501. Further, according to the research by the inventors, it has been found that when the pitch of the plurality of LED chips 510 is unbalanced, so-called color separation occurs in the light from such an LED lamp. In the LED lamp 101, since the pitch of the plurality of LED chips 510 is substantially uniform both vertically and horizontally, color separation can be avoided.

  By directly mounting the LED chip 510 on the light source substrate 300, heat from the LED chip 510 can be quickly transferred to the light source substrate 300. By forming the base material 310 of the light source substrate 300 from aluminum, heat dissipation from the LED chip 510 can be promoted. By attaching the plurality of light source substrates 300 to the heat transfer plate 210 and attaching the heat transfer plate 210 to the housing 220, the heat from the plurality of LED chips 510 is appropriately transferred to the housing 220 through the heat transfer plate 210. I can tell you. The plurality of heat radiation fins 221 of the housing 220 is preferable for promoting heat radiation.

  23 and 24 show another embodiment of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  FIG. 23 shows another example of the lens unit according to the present invention. The lens plate 702 shown in the figure has a Fresnel lens 711 formed on the entire area of each partition region 710 and does not have the non-lens portion 712 in the above-described embodiment. According to such a configuration, more light from the light source unit 500 can be collected and emitted to the illumination target.

  FIG. 24 shows an LED lamp according to a second embodiment of the present invention. The LED lamp 102 of this embodiment is circular in plan view. In this figure, the protective plate 750 is omitted for convenience of understanding. The LED lamp 102 includes a lens plate 703. The lens plate 703 has a circular shape in plan view. The lens plate 703 has a plurality of partition regions 710. In the present embodiment, each partition region 710 has a regular hexagonal shape. The plurality of partition regions 710 are arranged at equal pitches with no gaps therebetween. Each partition region 710 has a Fresnel lens 711 formed on the entire area. The plurality of light source units 500 are arranged in a matrix so that the centers of the plurality of Fresnel lenses 711 coincide with each other. Also in this embodiment, the plurality of light source units 500 are separately mounted on the plurality of light source substrates 300. The plurality of light source substrates 300 are spaced apart from each other and arranged in parallel.

  Also according to this embodiment, for example, the floor surface of a gymnasium can be illuminated more uniformly using the LED lamp 102. Further, as can be understood from the present embodiment, the matrix-like arrangement referred to in the present invention is not limited to the rectangular arrangement, but means a regular and discrete arrangement on a certain plane.

  The LED lamp lens unit and the LED lamp according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the LED lamp according to the present invention can be varied in design in various ways.

  The lens referred to in the present invention is preferably a Fresnel lens 711, but is not limited to this. For example, a general convex lens may be employed. The lens unit referred to in the present invention is typically a lens plate 701 to 703 having a plurality of Fresnel lenses 711, but is not limited thereto, and may be configured to include a plurality of lenses referred to in the present invention.

  The light source unit referred to in the present invention is preferably configured to include a plurality of LED chips 510 mounted directly on the light source substrate 300, but is not limited thereto. For example, the light source unit includes one or more LED chips and is mounted on the light source substrate 300. A so-called LED module having a terminal may be used. In this case, the surface of the part emitted from the LED module corresponds to the emission surface referred to in the present invention.

101, 102 LED lamp 200 Support member 210 Heat transfer plate 220 Housing 221 Radiation fin 222 Mounting opening 223 Housing recess 224 Cable groove 230 Attachment 250 Stay 300 Light source substrate 310 Base material 311 Insulating layer 320 Wiring pattern 330 Resist layer 340 Connector 350 Cable 500 Light source unit 501 Output surface 510 LED chip 520 Fluorescent resin 530 Weir 701, 702, 703 Lens plate (lens unit)
710 Partition area 711 Fresnel lens 712 Non-lens portion 750 Protection plate 760 Resin frame

Claims (16)

A plurality of light source units each having one or more LED chips and an emission surface for emitting light from the LED chips;
With each be emitted through the light from the light source unit includes a lens unit for plate-shaped LED lamp, a having a plurality of Fresnel lenses arranged in a matrix,
The LED lamp lens unit has a rectangular shape as a whole, and each has a plurality of rectangular partition regions each including the Fresnel lens.
The plurality of partitioned areas are composed of a plurality of first partitioned areas and a plurality of second partitioned areas surrounding the plurality of first partitioned areas,
The first partition region has a square shape, and the Fresnel lens is formed on the entire surface thereof.
2. The LED lamp according to claim 1, wherein the second partition region has a long rectangular shape and has a non-lens portion where the Fresnel lens is not formed on an outer portion thereof . 2. The LED lamp according to claim 1 , wherein a center of the first partition region coincides with a center of the Fresnel lens included in the partition region. On SL center of the second partition region is located outward from the center of the Fresnel lens included in the partition area, LED lamp according to claim 1 or 2. 4. The LED lamp according to claim 1, wherein each of the emission surfaces is smaller than the Fresnel lens. The LED lamp according to claim 1, wherein a distance between each Fresnel lens and each light source unit is smaller than a focal length of each Fresnel lens. One by a part of the plurality of light source units has a plurality of light source substrates mounted, LED lamp according to any one of claims 1 to 5. The LED lamp according to claim 6 , wherein the one or more LED chips are directly mounted on the light source substrate. Each light source unit covers the one or more LED chips and is excited by light from the one or more LED chips to emit a light having a wavelength different from that of the light from the LED chips. The LED lamp according to claim 7 , comprising: The LED lamp according to claim 8 , wherein each of the light source units has a rectangular shape. Each said light source unit is an LED lamp of Claim 9 which has several said LED chip arrange | positioned at matrix form. 11. The LED lamp according to claim 10 , wherein each of the plurality of light source substrates has an elongated rectangular shape and is spaced apart from each other in parallel. The plurality of LED chips included in each light source unit are connected in parallel,
Each light source substrate a plurality of light source units each other mounted on are connected in series, LED lamp according to any one of claims 7 to 11. The plurality of light source substrates are provided with a heat transfer plate which is attached, LED lamp according to any one of claims 6 to 12. The LED lamp according to claim 13 , further comprising a housing that supports the heat transfer plate. The housing has an opening for mounting facing the opposite side of the heat transfer plate to the side on which the plurality of light source substrates are attached,
The LED lamp according to claim 14 , comprising an attachment attached to the attachment opening. The LED lamp according to any one of claims 1 to 15 , further comprising a protection plate positioned on an opposite side of the plurality of light source units with respect to the lens unit.