JP7055546B2 - Lighting equipment for plant cultivation and plant cultivation method - Google Patents

Description

The present invention relates to a lighting fixture for plant cultivation and a method for cultivating a plant using the lighting fixture.

The lighting fixture for plant cultivation disclosed in Patent Document 1 below has a light emitting body and a shade having a U-shaped cross section covering the light emitting body. According to this conventional lighting equipment for plant cultivation, the light traveling from the illuminant in the direction not toward the plant is reflected by the shade and directed toward the plant, and the irradiation efficiency from the illuminant to the plant is improved. ..

However, the shades are integrally configured to always maintain a constant shape, and the shades cannot be easily removed from the support supporting the shades, and are irradiated with light regardless of the plant growth stage. The range was constant. Therefore, in this conventional lighting equipment for plant cultivation, depending on the growth stage of the plant, the efficiency of irradiating the light from the illuminant to the plant may decrease, or the entire plant may not be able to irradiate the light.

On the other hand, the plant cultivation device disclosed in Patent Document 2 below includes a cultivation panel in which a plant is planted, one or more individual light sources including a light emitting diode device, and a drive current for the one or more individual light sources. And one or more of the current supply means that refrain the light emitted from the one or more individual light sources so that each has a predetermined irradiation area in order to irradiate the plant planted in the cultivation panel. The cultivation panel is moved relative to the optical element and one or more irradiation areas of the one or more optical elements so that they are located within a wider light source range as the plant grows. It is equipped with a means of transportation to make it.

According to this conventional plant cultivation device, it is possible to set only the existing range of the plant and its vicinity as the light receiving range according to the growth of the plant, so that the light irradiation efficiency from the LED device to the plant is greatly improved. The ratio of light radiated to the cultivation panel is reduced, and energy can be effectively used.

Japanese Patent No. 5473430 Japanese Unexamined Patent Publication No. 2013-158317

However, in the conventional plant cultivation apparatus disclosed in Patent Document 2, each of the conventional plant cultivation apparatus has a predetermined irradiation area in order to irradiate the plants planted in the cultivation panel with the light emitted from the one or a plurality of individual light sources. Since one or more optical elements to be refracted to have are used, the cost of the one or more optical elements to be refracted must be relatively high, so that the overall cost also increases.

The present invention has been made in view of such circumstances, and is a lighting fixture for plant cultivation that can reduce costs even though the efficiency of irradiating light from a light emitting unit to a plant can be increased. , It is an object of the present invention to provide a method for cultivating a plant using this.

The following aspects are presented as means for solving the above problems. The luminaire for plant cultivation according to the first aspect includes a support member extending in the first direction, one or a plurality of light emitting portions supported by the support member and extending or arranging in the first direction. The support member is rotatable and displaceable relative to the support member about the axis of the first direction on one side and the other side in the second direction orthogonal to the first direction, respectively. The first and second reflective members are provided with a first and second reflective member retentably attached to a plurality of rotational displacement positions with respect to the support member, and the first and second reflective members extend in the first direction. The plurality of irradiation ranges in a plane orthogonal to the first direction of the light from the one or more light emitting parts by reflecting a part of the light from the one or more light emitting parts. The wide and narrow are set to different irradiation ranges according to the rotational displacement position.

According to this first aspect, the width of the irradiation range can be set by changing the rotational displacement positions of the first and second reflective members, so that the irradiation range can be set according to the growth of the plant. Can be set, the efficiency of irradiating the plant with light from the light emitting part can be increased, and the energy can be effectively used.

Further, according to the first aspect, since the first and second reflecting members extending in the first direction and forming separate members from each other are used, the optics for refracting the light from the light source unit are used. Compared with the case where the irradiation range is made variable by using an element, the cost can be reduced.

In addition, since the patent document 1 only discloses a shade integrally configured, the patent document 1 is a first and second reflection which are separate members as in the first aspect. It is neither disclosed nor suggested that the members be adopted or attached to the support members so that they can be rotatably displaced and held in multiple rotatably displaced positions, respectively.

In the luminaire for plant cultivation according to the second aspect, in the first aspect, the first and second reflective members are attached to the support member via a free stop hinge.

This second aspect gives an example of a mechanism for attaching the first and second reflective members to the support member. However, in the first aspect, such a mounting mechanism is not limited to the free stop hinge, and for example, a normal hinge is used to make the first and second reflective members rotatable, and the first and second reflecting members are rotatable. Any holding mechanism that holds the reflective member in a predetermined rotational displacement position may be adopted.

The luminaire for plant cultivation according to the third aspect includes a support member extending in the first direction, and one or more light emitting portions supported by the support member and extending or arranging in the first direction. Removably attached to one side and the other side of the support member in a second direction orthogonal to the first direction, extending in the first direction and from the one or more light emitting portions. A first and second reflecting member that reflects a part of the light and sets an irradiation range of the light from the one or a plurality of light emitting portions in a plane orthogonal to the first direction is provided. It is an orthogonal one.

According to this third aspect, since the first and second reflective members are detachably attached to the support member, the irradiation is performed by attaching the first and second reflective members to the support member. The range can be relatively narrowed, the irradiation range can be relatively widened by removing the first and second reflective members from the support member, and the irradiation range is set according to the growth of the plant. It is possible to increase the efficiency of irradiating the plant with light from the light emitting portion, and it is possible to effectively utilize energy. Further, according to the third aspect, since the first and second reflective members are detachably attached to the support members, a plurality of sets of the first set in which the width and narrowness of the irradiation range are different for each set. And if the second reflective member is prepared, the wide and narrow of the irradiation range can be set by replacing the set of the first and second reflective members attached to the support member, so that the growth of the plant can be achieved. In addition, the irradiation range can be set, the efficiency of irradiating the plant with light from the light emitting portion can be increased, and the energy can be effectively used. In addition to replacing the set of the first and second reflective members, the irradiation range can be further set by removing the first and second reflective members of any set from the support member. You can also do it.

Further, according to the third aspect, since the first and second reflecting members extending in the first direction and forming separate members from each other are used, the optics for refracting the light from the light source unit are used. Compared with the case where the irradiation range is made variable by using an element, the cost can be reduced.

In the lighting apparatus for plant cultivation according to the fourth aspect, in the third aspect, the first reflecting member and the supporting member are provided with first and second engaging portions that engage with each other, respectively. The first engaging portion of the first reflecting member has a horizontal direction in the first direction and the second engaging portion with respect to the second engaging portion of the support member. It can be engaged from above and can be disengaged by moving the support member upward with respect to the second engaging portion, and can engage with the second reflective member and the support member. The third and fourth engaging portions are provided, respectively, and the third engaging portion of the second reflective member is in a state where the first direction and the second direction are horizontal. , The support member can be engaged with the fourth engaging portion from above, and can be disengaged by moving the support member upward with respect to the fourth engaging portion. It is a thing.

This fourth aspect gives an example of a removable attachment structure to the support member of the first and second reflective members. Then, in the fourth aspect, the first engaging portion can be engaged with the second engaging portion from above and can be disengaged by moving the first engaging portion upward, and the first engaging portion can be disengaged. Since the engaging portion of 3 can be engaged with the fourth engaging portion from above and can be disengaged by moving it upward, the first and second reflective members with respect to the support member can be disengaged. Is easy to install and remove.

In the lighting apparatus for plant cultivation according to the fifth aspect, in the third aspect, the first reflecting member and the supporting member are provided with first and second engaging portions that engage with each other, respectively. The first engaging portion of the first reflective member can engage with the second engaging portion of the support member from the end portion of the second engaging portion in the first direction. The engagement can be disengaged by moving the support member in the first direction with respect to the second engaging portion, and the first and second engaging portions engage with each other. In this state, the first engaging portion is restricted from moving relative to the second engaging portion in a direction other than the first direction, and the second reflective member and the said The support member is provided with third and fourth engaging portions that engage with each other, and the third engaging portion of the second reflective member is attached to the fourth engaging portion of the support member. On the other hand, the fourth engaging portion can be engaged from the end portion in the first direction and is moved in the first direction with respect to the fourth engaging portion of the support member. The engagement can be disengaged, and the third and fourth engagement portions are in a state of being engaged with each other, and the third engagement portion has the first engagement portion with respect to the fourth engagement portion. It regulates the movement so that it does not move relatively in directions other than the direction.

This fifth aspect cites another example of the removable attachment structure of the first and second reflective members to the support member. Then, in the fifth aspect, the attachment and detachment of the first and second reflective members to the support member is not as easy as in the fourth aspect, but the first and second engagements are made. The portions are restricted so that the first engaging portion does not move relative to the second engaging portion in a direction other than the first direction when they are engaged with each other. Since the third and fourth engaging portions are the same, the first and second reflective members are inadvertently disengaged from the support member due to vibration, contact, or the like, as compared with the fourth aspect. It becomes difficult to invite such a situation.

The method for cultivating a plant according to the sixth aspect is to cultivate a plant by irradiating the plant with light from the one or more light emitting parts using the lighting equipment for plant cultivation according to the first or second aspect. In the method of cultivating a plant, the first and first stages are such that the irradiation range is relatively narrowed in the relative pre-stage of the plant growth as compared with the relative post-stage of the plant growth. It sets the rotation position of the reflective member of 2.

According to this sixth aspect, the irradiation range can be set according to the growth of the plant, the irradiation efficiency of the light from the light emitting portion to the plant can be increased, and the energy can be effectively used. Can be done.

The method for cultivating a plant according to the seventh aspect is to irradiate the plant with light from the one or more light emitting parts by using the lighting equipment for plant cultivation according to any one of the third to fifth aspects. In the method of cultivating a plant for cultivating the plant, the first and second reflective members are attached to the support member in the relative pre-stage of the growth of the plant, and in the relative post-stage of the growth of the plant. , The first and second reflective members are removed from the support member.

According to this seventh aspect, the irradiation range can be set according to the growth of the plant, the irradiation efficiency of the light from the light emitting portion to the plant can be increased, and the energy can be effectively used. Can be done.

The method for cultivating a plant according to the eighth aspect is to irradiate the plant with light from the one or more light emitting parts by using the lighting equipment for plant cultivation according to any one of the third to fifth aspects. In the method of cultivating a plant for cultivating a plant, a plurality of sets of the first and second reflective members having different irradiation ranges for each set are prepared, and in a relative pre-stage of the growth of the plant, The set of the first and second reflective members having a relatively narrow irradiation range is selectively attached to the support member, and the irradiation range is relatively wide at a relative later stage of the growth of the plant. The set of the first and second reflective members is selectively attached to the support member.

According to this eighth aspect, the irradiation range can be set according to the growth of the plant, the irradiation efficiency of the light from the light emitting portion to the plant can be increased, and the energy can be effectively used. Can be done.

According to the present invention, a lighting fixture for plant cultivation that can reduce costs even though the efficiency of irradiating light from a light emitting portion to a plant can be increased, and a plant cultivation method using the same. Can be provided.

It is a schematic cross-sectional view which shows the state which narrowed the irradiation range of the lighting equipment for plant cultivation by 1st Embodiment of this invention. It is a schematic right side view which shows the same state as FIG. 1 of the lighting equipment for plant cultivation by 1st Embodiment of this invention. It is a schematic cross-sectional view which shows the state which expanded the irradiation range of the lighting equipment for plant cultivation by 1st Embodiment of this invention. It is a schematic cross-sectional view which shows the state which removed the 1st and 2nd reflective members of the lighting equipment for plant cultivation by 2nd Embodiment of this invention. It is a schematic cross-sectional view which shows the state which attached the 1st and 2nd reflective members which make the irradiation range relatively narrow of the lighting equipment for plant cultivation by 2nd Embodiment of this invention. It is a schematic cross-sectional view which shows the state which attached the 1st and 2nd reflective members which relatively widen an irradiation range of the lighting equipment for plant cultivation by 2nd Embodiment of this invention. It is a schematic cross-sectional view which shows the state which removed the 1st and 2nd reflective members of the lighting equipment for plant cultivation according to 3rd Embodiment of this invention. It is a schematic cross-sectional view which shows the state which attached the 1st and 2nd reflective members which make the irradiation range relatively narrow of the lighting equipment for plant cultivation by the 3rd Embodiment of this invention. It is a schematic cross-sectional view which shows the state which attached the 1st and 2nd reflective members which relatively widen an irradiation range of the lighting equipment for plant cultivation according to 3rd Embodiment of this invention. It is a figure which shows typically the use example of the lighting equipment for plant cultivation by the comparative example. It is a figure which shows typically the use example of the lighting equipment for plant cultivation by this invention.

Hereinafter, a lighting fixture for plant cultivation according to the present invention and a method for cultivating a plant using the same will be described with reference to the drawings.

[First Embodiment]

FIG. 1 is a schematic cross-sectional view showing a state in which the irradiation range of the lighting fixture 1 for plant cultivation according to the first embodiment of the present invention is relatively narrowed. FIG. 2 is a schematic right side view showing the same state as in FIG. 1 of the lighting fixture 1 for plant cultivation shown in FIG. FIG. 1 corresponds to a schematic cross-sectional view taken along the line Z1-Z2 in FIG. FIG. 3 is a schematic cross-sectional view showing a state in which the irradiation range of the lighting fixture 1 for plant cultivation shown in FIG. 1 is relatively widened. In FIGS. 1 and 3, the state of a part of the light rays from the LED 12 is shown by a alternate long and short dash line. This point is the same for FIGS. 4 to 9 described later.

For convenience of explanation, as shown in FIGS. 1 to 3, X-axis, Y-axis, and Z-axis that are orthogonal to each other are defined. Of the X-axis directions, the direction of the arrow is called the + X direction or the + X side, and the opposite direction is called the −X direction or the −X side, and the same applies to the Y-axis direction and the Z-axis direction. This point is the same for each figure described later.

The lighting fixture 1 for plant cultivation according to the present embodiment is installed in a plant factory or the like so that the X-axis direction and the Y-axis direction are the horizontal direction, the + Z direction is the upward direction, and the −Z direction is the downward direction. Although not shown in the drawing, the lighting fixture 1 for plant cultivation according to the present embodiment irradiates a plurality of cultivated plants arranged in a row in the Y-axis direction at predetermined intervals below the lighting fixture 1. ing. A plurality of lighting fixtures 1 for plant cultivation according to the present embodiment are installed as needed in a plant factory or the like.

The lighting fixture 1 for plant cultivation according to the present embodiment has a support member 11 extending in the Y-axis direction (first direction) and a plurality of light emitting portions supported by the support member 11 and arranged in the Y-axis direction. LED 12, a first reflective member 13A, a second reflective member 13B, a printed substrate 14 on which the LED 12 is mounted, and a window plate 15 made of translucent glass, acrylic, or the like.

In the present embodiment, the plurality of LEDs 12 are arranged in one row in the Y-axis direction, but may be arranged in two or more rows. Further, in the present invention, instead of the plurality of LEDs 12, for example, a straight tube fluorescent lamp or a straight tube type LED lamp may be used as one light emitting unit extending in the Y-axis direction.

In the present embodiment, as shown in FIGS. 1 and 3, the support member 11 is configured to have a U-shaped cross section that opens on the −Z side, and the opening is closed by the window plate 15. The window plate 15 is attached to the support member 11 by fitting the + X side portion and the −X side portion into the grooves formed in the + X side portion 11a and the −X side portion 11b of the support member 11, respectively. There is. The printed circuit board 14 on which the LED 12 is mounted is fixed to the inner surface of the support member 11 parallel to the XY plane so that the LED 12 faces the −Z side. The light emitted from the LED 12 is emitted to the outside through the window plate 15. In the present embodiment, the support member 11 and the window plate 15 constitute a housing for accommodating the printed circuit board 14 on which the LED 12 is mounted.

In the present embodiment, the first and second reflective members 13A and 13B are in the Y-axis direction (first direction) on the + X side and the −X side of the support member 11 in the X-axis direction (second direction), respectively. ) Is attached so as to be relatively rotatable with respect to the support member 11 and holdable at a plurality of rotational displacement positions with respect to the support member 11. Then, as shown in FIGS. 1 and 3, the first and second reflecting members 13A and 13B extend in the Y-axis direction and reflect a part of the light from the LED 12, and the light from the LED 12 is reflected. The irradiation range in the plane parallel to the XZ plane is set to an irradiation range in which the width and narrowness are different from each other according to the plurality of rotational displacement positions.

Specifically, in the present embodiment, the first reflective member 13A is attached to the + X side portion 11a of the support member 11 via the free stop hinge 16A. The free stop hinge 16A includes a shaft portion 16Aa extending in the Y-axis direction, a hinge piece 16Ab fixed to the + X side portion 11a of the support member 11, and a hinge piece 16Ac fixed to the first reflective member 13A. It has, and the opening angle between the shaft portions 16Aa and 16Ab around the shaft portion 16Aa can be set to an arbitrary angle to hold the angle.

Further, the second reflective member 13B is attached to the −X side portion 11b of the support member 11 via the free stop hinge 16B. The free stop hinge 16B includes a shaft portion 16Ba extending in the Y-axis direction, a hinge piece 16Bb fixed to the −X side portion 11b of the support member 11, and a hinge piece 16Bc fixed to the second reflective member 13B. The opening angle between the shaft portions 16Ba and 16Bb around the shaft portion 16Ba can be set to an arbitrary angle to maintain the angle.

In the present invention, the attachment mechanism of the first and second reflective members 13A and 13B to the support member 11 is not limited to the free stop hinges 16A and 16B, and for example, the first and second reflective members 13A and 13B are attached using ordinary hinges. The reflective members 13A and 13B of the above may be made rotatable, and an arbitrary holding mechanism for holding the first and second reflective members 13A and 13B at predetermined rotational displacement positions may be adopted.

The first and second reflective members 13A and 13B can be manufactured, for example, by extrusion molding of aluminum or an aluminum alloy and a resin. The surface on the −X side of the first reflective member 13A and the surface on the + X side of the second reflective member 13B are reflective surfaces. In the present embodiment, the reflective surface is a curved curved surface as shown in FIGS. 1 and 2, but it may be another curved surface or a flat surface. A desired reflective layer may be formed on the reflective surface, if necessary, in order to further increase the reflectance.

When a plant is cultivated by irradiating the plant with light from the LED 12 using the luminaire 1 for plant cultivation according to the present embodiment, the relative pre-stage of the growth of the plant is the growth of the plant. The rotation positions of the first and second reflecting members 13A and 13B are set so that the irradiation range is relatively narrowed as compared with the relative posterior stage. For example, until the plant grows to some extent, the rotation positions of the first and second reflective members 13A and 13B are set to narrow the irradiation range as shown in FIG. 1, and then shown in FIG. As described above, the rotation positions of the first and second reflective members 13A and 13B are set so as to widen the irradiation range. The irradiation range is not limited to two stages, and may be changed to more stages according to the growth of the plant.

According to the present embodiment, the wide and narrow of the irradiation range can be set by changing the rotational displacement positions of the first and second reflective members 13A and 13B, so that the irradiation can be performed according to the growth of the plant. The range can be set, the efficiency of irradiating the plant with light from the LED 12 can be increased, and the energy can be effectively used.

FIG. 10 is a diagram schematically showing an example of using a lighting fixture for plant cultivation according to a comparative example compared with the present invention. In this comparative example, since the light irradiation range is constant regardless of the plant growth stage, as shown in FIG. 10, wasteful light that is not irradiated to the plant increases, and the light irradiation efficiency to the plant is improved. It will drop. On the other hand, FIG. 11 schematically shows how the irradiation range is expanded as the plant grows as described above, as an example of using the lighting equipment for plant cultivation according to the present invention. In the present invention, as shown in FIG. 11, the irradiation range can be set according to the growth of the plant, the irradiation efficiency of the light from the LED 12 to the plant can be increased, and the energy can be effectively used. be able to.

Further, according to the present embodiment, since the first and second reflective members 13A and 13B extending in the Y-axis direction and forming separate members from each other are used, the optics for refracting the light from the light source unit are used. Compared with the case where the irradiation range is made variable by using an element, the cost can be reduced.

[Second Embodiment]

FIG. 4 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B of the lighting fixture 21 for plant cultivation according to the second embodiment of the present invention are removed. FIG. 5 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B, which relatively narrow the irradiation range, are attached to the lighting fixture 21 for plant cultivation according to the second embodiment of the present invention. be. FIG. 6 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B, which relatively widen the irradiation range, are attached to the lighting fixture for plant cultivation according to the second embodiment of the present invention. ..

In FIGS. 4 to 6, the same or corresponding elements as the elements in FIGS. 1 to 3 are designated by the same reference numerals, and the overlapping description thereof will be omitted.

The difference between the plant cultivation lighting fixture 21 according to the present embodiment and the plant cultivation lighting fixture 1 according to the first embodiment is that the plant cultivation lighting fixture 1 according to the first embodiment has the first and second embodiments. The second reflective members 13A and 13B are attached to the + X side portion 11a and the −X side portion 11b of the support member 11 via the free stop hinges 16A and 16B, respectively, whereas the plant cultivation according to the present embodiment is used. In the lighting fixture 21, the first and second reflective members 13A and 13B are detachably attached to the + X side portion 11a and the −X side portion 11b of the support member 11, respectively.

In the present embodiment, the + Z side portion of the first reflective member 13A and the + X side portion 11a of the support member 11 are provided with a first engaging portion 13Aa and a second engaging portion 11aa that engage with each other, respectively. ing. In the present embodiment, the first engaging portion 13Aa of the first reflecting member 13A is attached to the second engaging portion 11aa of the support member 11 in a state where the Y-axis direction and the X-axis direction are horizontal. On the other hand, it can be engaged from above and can be disengaged by moving it upward with respect to the second engaging portion 11aa of the support member 11. In the present embodiment, specifically, the second engaging portion 11aa is configured as a hook portion, and the first engaging portion 13Aa is configured as a hooking portion to be hooked on the hook portion.

Further, in the present embodiment, the third engaging portion 13Ba and the fourth engaging portion 11ba that engage with each other are attached to the + Z side portion of the second reflective member 13B and the −X side portion 11b of the support member 11. Each is provided. In the present embodiment, the third engaging portion 13Ba of the second reflecting member 13B is attached to the fourth engaging portion 11ba of the support member 11 in a state where the Y-axis direction and the X-axis direction are horizontal. On the other hand, it can be engaged from above and can be disengaged by moving it upward with respect to the fourth engaging portion 11ba of the support member 11. In the present embodiment, specifically, the fourth engaging portion 11ba is configured as a hook portion, and the third engaging portion 13Ba is configured as a hooking portion to be hooked on the hook portion.

Also in this embodiment, the first and second reflective members 13A and 13B can be manufactured by, for example, extruding aluminum or an aluminum alloy and a resin.

In the present embodiment, for example, the set of the first and second reflective members 13A and 13B shown in FIG. 5 in which the irradiation range is relatively narrow, and the first and second and 13B in FIG. 6 in which the irradiation range is relatively wide. A set of the second reflective members 13A and 13B is prepared in advance.

When a plant is cultivated by irradiating a plant (not shown) with light from the LED 12 using the plant cultivation lighting device 21 according to the present embodiment, the relative pre-stage of the growth of the plant is performed. Then, the set of the first and second reflective members 13A and 13B shown in FIG. 5, which has a relatively narrow irradiation range, is selectively attached to the support member 11 to narrow the irradiation range, and the plant grows. In the relative subsequent step of, the pair of the first and second reflective members 13A and 13B shown in FIG. 6, which has a relatively wide irradiation range, is selectively attached to the support member 11 to widen the irradiation range. After that, the set of the first and second reflective members 13A and 13B shown in FIG. 6 may be left attached to the support member 11, but when the plant grows to a certain extent, FIG. 4 shows. As shown, the first and second reflective members 13A and 13B may be removed from the support member 11 to further expand the irradiation range.

It should be noted that three or more sets of the first and second reflective members 13A and 13B having different widths of the irradiation range for each set are prepared, and these sets are selected from the set having a narrow irradiation range according to the growth of the plant. It may be sequentially selected and exchanged. In addition, only one set of the first and second reflective members 13A and 13B (for example, the set of the first and second reflective members shown in FIG. 5) is prepared, and the first and the second reflective members 13A and 13B are prepared until the plant grows to some extent. The first and second reflective members 13A and 13B may be attached to the support member 11, and then the first and second reflective members 13A and 13B may be removed from the support member 11 to widen the irradiation range.

According to the present embodiment, the width of the irradiation range can be set by attaching / detaching the first and second reflective members 13A and 13B, so that the irradiation range is set according to the growth of the plant. Therefore, the efficiency of irradiating the plant with light from the LED 12 can be increased, and the energy can be effectively used.

Further, according to the present embodiment, since the first and second reflective members 13A and 13B extending in the Y-axis direction and forming separate members from each other are used, the optics for refracting the light from the light source unit are used. Compared with the case where the irradiation range is made variable by using an element, the cost can be reduced.

Further, according to the present embodiment, the first engaging portion 13Aa can be engaged with the second engaging portion 11aa from above and can be disengaged by moving the first engaging portion 13Aa upward. Since the third engaging portion 13Ba can be engaged with the fourth engaging portion 11ba from above and can be disengaged by moving it upward, the first and second engaging portions 11 with respect to the support member 11 can be disengaged. The reflective members 13A and 13B can be easily attached and detached.

[Third Embodiment]

FIG. 7 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B of the lighting fixture 31 for plant cultivation according to the third embodiment of the present invention are removed. FIG. 8 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B, which relatively narrow the irradiation range, are attached to the lighting fixture 31 for plant cultivation according to the third embodiment of the present invention. be. FIG. 9 is a schematic cross-sectional view showing a state in which the first and second reflective members 13A and 13B, which relatively widen the irradiation range, are attached to the lighting fixture 31 for plant cultivation according to the third embodiment of the present invention. be.

In FIGS. 7 to 9, the same or corresponding elements as those in FIGS. 4 to 6 are designated by the same reference numerals, and the overlapping description thereof will be omitted.

The difference between the luminaire 31 for plant cultivation according to the present embodiment and the luminaire 21 for plant cultivation according to the second embodiment is that the first engaging portion 13Aa and the support member 11 of the first reflective member 13A are different. In the engagement state between the second engaging portion 11aa and the engagement state between the third engaging portion 13Ba of the second reflective member 13B and the fourth engaging portion 11ba of the support member 11. be. That is, in the present embodiment, the first engaging portion 13Aa of the first reflecting member 13A is in the Y-axis direction of the second engaging portion 11aa with respect to the second engaging portion 11aa of the support member 11. It is possible to engage from the end of the support member 11 and to disengage it by moving it with respect to the second engaging portion 11aa of the support member 11 in the Y-axis direction. The portions 13Aa and 11aa are restricted so that the first engaging portion 13Aa does not move relative to the second engaging portion 11aa in a direction other than the Y-axis direction when the portions 13Aa and 11aa are engaged with each other. The third engaging portion 13Ba of the second reflecting member 13B engages with the fourth engaging portion 11ba of the support member 11 from the end portion of the fourth engaging portion 11ba in the Y-axis direction. In addition to being able to engage, the support member 11 can be disengaged by moving it in the Y-axis direction with respect to the fourth engaging portion 11ba, and the third and fourth engaging portions 13Ba and 11ba are In a state of being engaged with each other, the third engaging portion 13Ba is restricted from moving relative to the fourth engaging portion 11ba in a direction other than the Y-axis direction.

In the present embodiment, the first reflecting member 13A is a connecting portion that connects the reflecting portion 13Ab and the first engaging portion 13Aa in addition to the reflecting portion 13Ab and the first engaging portion 13Aa. It has 13Ac. The second reflecting member 13B has, in addition to the reflecting portion 13Bb and the third engaging portion 13Ba, a connecting portion 13Bc that connects the reflecting portion 13Bb and the third engaging portion 13Ba. Also in this embodiment, the first and second reflective members 13A and 13B can be manufactured, for example, by extrusion molding of aluminum or an aluminum alloy and a resin.

The plant cultivation lighting fixture 31 according to the present embodiment is the same as the second embodiment by using the same as the plant cultivation lighting fixture 21 according to the second embodiment when cultivating a plant. You can get the benefits.

Further, according to the present embodiment, the attachment and detachment of the first and second reflective members 13A and 13B to the support member 11 is not as easy as in the second embodiment, but the first and second reflective members 13A and 13B are not as easy as those in the second embodiment. In the state where the engaging portions 13Aa and 11aa of 2 are engaged with each other, the first engaging portion 13Aa does not move relative to the second engaging portion 11aa in a direction other than the Y-axis direction. The same applies to the third and fourth engaging portions 13Ba and 11ba. Therefore, as compared with the second embodiment, the first and second reflecting members 13A and 13B are caused by vibration, contact or the like. Is less likely to cause a situation in which the support member 11 is inadvertently detached from the support member 11.

Although each embodiment of the present invention has been described above, the present invention is not limited to these embodiments.

For example, in the first embodiment, the rotational displacement positions of the first and second reflective members 13A and 13B are manually changed, but in the present invention, the first and second reflecting members 13A and 13B are changed according to the growth of the plant. The rotational displacement positions of the reflective members 13A and 13B may be automatically changed.

1,21,31 Lighting equipment for plant cultivation 11 Support member 12 LED
13A, 13B Reflective member 16 Free stop hinge 11aa, 13Aa, 11ba, 13Ba Engagement part

Claims (6)

A support member extending in the first direction and
One or more light emitting parts supported by the support member and extending or arranging in the first direction.
A plurality of sets of first and second reflective members selectively attached to the support member for each set, and
Equipped with
The first and second reflective members of each set are detachably attached to one side and the other side of the support member in a second direction orthogonal to the first direction, respectively, in the first direction. The irradiation range of the light from the one or more light emitting parts in the plane orthogonal to the first direction is extended and reflected a part of the light from the one or more light emitting parts. Set,
The width of the irradiation range differs depending on the set of the first and second reflective members.
Lighting equipment for plant cultivation that is characterized by that. A support member extending in the first direction and
One or more light emitting parts supported by the support member and extending or arranging in the first direction.
Removably attached to one side and the other side of the support member in a second direction orthogonal to the first direction, extending in the first direction and from the one or more light emitting portions. A first and second reflecting member that reflects a part of the light and sets an irradiation range of the light from the one or more light emitting portions in a plane orthogonal to the first direction.
Equipped with
The first reflective member and the support member are provided with first and second engaging portions that engage with each other, respectively.
The first engaging portion of the first reflective member with respect to the second engaging portion of the support member in a state where the first direction and the second direction are horizontal. It can be engaged from above and can be disengaged by moving it upward with respect to the second engaging portion of the support member.
The second reflective member and the support member are provided with third and fourth engaging portions that engage with each other, respectively.
The third engaging portion of the second reflective member with respect to the fourth engaging portion of the support member in a state where the first direction and the second direction are horizontal. It can be engaged from above and can be disengaged by moving it upward with respect to the fourth engaging portion of the support member.
Lighting equipment for plant cultivation that is characterized by that. A support member extending in the first direction and
One or more light emitting parts supported by the support member and extending or arranging in the first direction.
Removably attached to one side and the other side of the support member in a second direction orthogonal to the first direction, extending in the first direction and from the one or more light emitting portions. A first and second reflecting member that reflects a part of the light and sets an irradiation range of the light from the one or more light emitting portions in a plane orthogonal to the first direction.
Equipped with
The first reflective member and the support member are provided with first and second engaging portions that engage with each other, respectively.
The first engaging portion of the first reflective member engages with the second engaging portion of the support member from the end of the second engaging portion in the first direction. It is possible, and the engagement can be disengaged by moving the support member in the first direction with respect to the second engaging portion.
When the first and second engaging portions are engaged with each other, the first engaging portion is relative to the second engaging portion in a direction other than the first direction. Regulate not to move to
The second reflective member and the support member are provided with third and fourth engaging portions that engage with each other, respectively.
The third engaging portion of the second reflective member engages with the fourth engaging portion of the support member from the end of the fourth engaging portion in the first direction. It is possible and can be disengaged by moving the support member in the first direction with respect to the fourth engaging portion.
In a state where the third and fourth engaging portions are engaged with each other, the third engaging portion is relative to the fourth engaging portion in a direction other than the first direction. Regulate not to move to
Lighting equipment for plant cultivation that is characterized by that. A method for cultivating a plant by irradiating the plant with light from the one or more light emitting portions using the lighting equipment for plant cultivation according to claim 2 or 3.
In the relative pre-stage of plant growth, the first and second reflective members are attached to the support member, and in the relative posterior stage of plant growth, the first and second reflective members are attached. A method for cultivating a plant, which comprises removing it from the support member. A support member extending in the first direction, one or more light emitting portions supported by the support member and extending or arranging in the first direction, and orthogonal to the first direction of the support member. Detachably attached to one side and the other side in the second direction, the one extends in the first direction and reflects a part of the light from the one or more light emitting portions. Alternatively, using a plant cultivation lighting device provided with first and second reflecting members for setting an irradiation range of light from a plurality of light emitting units in a plane orthogonal to the first direction, the above 1 It is a cultivation method of a plant that cultivates a plant by irradiating the plant with light from one or more light emitting parts.
A plurality of sets of the first and second reflective members having different irradiation ranges for each set are prepared.
In the relative pre-stage of the plant growth, the set of the first and second reflective members having a relatively narrow irradiation range is selectively attached to the support member, and the relative post-growth of the plant. The step is a method for cultivating a plant, which comprises selectively attaching a set of the first and second reflective members having a relatively wide irradiation range to the support member. A method for cultivating a plant by irradiating the plant with light from the one or more light emitting portions using the lighting equipment for plant cultivation according to claim 2 or 3.
A plurality of sets of the first and second reflective members having different irradiation ranges for each set are prepared.
In the relative pre-stage of the plant growth, the set of the first and second reflective members having a relatively narrow irradiation range is selectively attached to the support member, and the relative post-growth of the plant. The step is a method for cultivating a plant, which comprises selectively attaching a set of the first and second reflective members having a relatively wide irradiation range to the support member.

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