JP6797617B2 - Lighting unit - Google Patents

Description

The present invention relates to a lighting unit that illuminates at least one indoor surface such as a ceiling surface, a wall surface, or a floor surface in a room.

Conventionally, a technique has been used in which a light source is made to emit light by supplying electric power from a power source to illuminate an indoor space. Here, when the light source is made to emit light, the light source generates heat. Various techniques for storing the heat generated by this light source are disclosed.

For example, in Patent Document 1, an LED light source arranged in a lamp chamber so as to illuminate a lamp chamber opened to the inner wall portion between the inner wall portion and the outer wall portion, and an LED light source are fixed and generated from the LED light source. A lighting unit including a heat storage unit made of a metal such as aluminum that stores heat and a heat radiation unit integrally formed with the heat storage unit is disclosed.

Further, in Patent Document 2, a light source including a light source which is attached to the ceiling surface of the room and illuminates the indoor surface including the floor surface and a light source which is arranged on the side opposite to the irradiation side of the light source and generates heat from the light source. A lighting unit provided with a latent heat storage material that stores heat is disclosed.

Japanese Unexamined Patent Publication No. 2011-29205 Japanese Unexamined Patent Publication No. 8-212826

The lighting unit according to Patent Document 1 dissipates heat generated from an LED light source from a heat radiating portion between an inner wall portion and an outer wall portion via a metal heat storage portion such as aluminum having high thermal conductivity. There is. However, since the lighting unit according to Patent Document 1 is arranged between the inner wall portion and the outer wall portion, the heat generated from the LED light source is hardly dissipated indoors.

Further, in the lighting unit according to Patent Document 2, since the latent heat storage material that stores the heat of the light source is arranged further outside the ceiling surface in the room, even in this case, the stored latent heat is generated. The heat of the heat storage material is hardly dissipated indoors.

The present invention has been made in view of these points, and an object of the present invention is to provide a lighting unit capable of storing heat generated from a light source and appropriately dissipating the stored heat indoors. To provide.

In view of the above problems, the lighting unit according to the present invention is a lighting unit that illuminates the room by reflecting light on at least one indoor surface such as a ceiling surface, a wall surface, or a floor surface of the room. The lighting unit is arranged on the space side of the room with respect to the indoor surface, and the lighting unit is arranged in the vicinity of the indoor surface that reflects light so as to illuminate the room by reflecting light on the indoor surface. It is characterized by including at least a light source and a heat storage member having a latent heat storage material that stores heat generated from the light source.

According to the present invention, since the lighting unit is arranged on the space side of the room rather than the indoor surface, the heat generated from the light source and radiated into the room can be stored by the latent heat storage material of the heat storage member. As a result, the heat generated by the light source can be temporarily stored by the latent heat storage material, and after the light of the light source is turned off, the heat stored by the latent heat storage material can be dissipated indoors as the temperature in the room decreases. As a result, it is possible to delay the decrease in the room temperature after the room is turned off.

Furthermore, since heat storage members are placed in the room, for example, in a situation where sunlight enters a room that is heated in winter and the temperature inside the room rises sharply, excess heat in the room (heat from sunlight, etc.) is generated. By absorbing heat (heat storage) with a latent heat storage material, it is possible to suppress a rapid rise in room temperature. After that, the heat stored when the solar radiation disappears can be dissipated from the latent heat storage material. In this way, the discomfort caused by the sudden rise in room temperature can be suppressed, and the heating cost can be saved. Since such a rapid temperature rise is likely to occur in a highly airtight and highly insulated house, the effect can be further exhibited by applying the lighting unit according to the present invention to a highly airtight and highly insulated house.

In a more preferred embodiment, the lighting unit includes the heat storage member and the support member that supports the light source in the room, and the support member is an indoor surface that reflects the light or an indoor surface adjacent thereto. Can be attached to.

According to this aspect, the light source can be easily arranged in the vicinity of the indoor surface that reflects light by the support member, and the heat stored by the latent heat storage material of the heat storage member can be transferred to the room through the support member. It is possible to dissipate heat efficiently.

In a more preferred embodiment, the support member is a support beam arranged so as to pass between facing wall surfaces or between adjacent wall surfaces, and the support beam is attached at both end portions of the support beam. It is attached to the wall surface via a member.

According to this aspect, since the support beam is attached to one wall surface of the indoor surface via the mounting member at both end portions of the support beam, the support beam is attached to one wall surface of the indoor surface without performing a large-scale remodeling work in the room. The lighting unit can be easily installed indoors. Further, by removing the mounting members from the ends of both ends of the support beam, the light source or the like arranged on the support beam can be easily repaired.

Here, the mounting structure of the support beam is not particularly limited as long as the support beam can be arranged so as to pass between the facing wall surfaces or the adjacent wall surfaces. In a more preferred embodiment, the mounting member supports the support beam from below, and the support beam is formed with a storage recess for accommodating the light source and the heat storage member. It is arranged so as to be exposed from the opening of the accommodating recess, and the heat storage member is arranged so as to come into contact with the inner wall surface of the accommodating recess.

According to this aspect, since the support beam is supported from below by the mounting member, the support beam can be easily mounted and removed from the mounting member. As a result, the lighting unit can be easily installed in the indoor space.

Further, since the light source accommodated in the accommodating recess of the support beam is exposed from the opening, the light of the light source can be applied to the ceiling surface through the opening. Further, since the heat storage member is in contact with the inner wall surface of the accommodating recess, the heat generated by the light source and stored by the heat storage member can be efficiently dissipated indoors via the support beam.

In a more preferred embodiment, the accommodating recess is provided with a pressing member that presses the inner wall surface of the accommodating recess via the heat storage member. According to this aspect, since the pressing member presses the inner wall surface of the accommodating recess through the heat storage member, the generation of a gap between the heat storage member and the inner wall surface is suppressed, and the heat from the heat storage member is transferred through the support beam. Heat can be dissipated more efficiently in the room.

In a more preferable embodiment of the pressing member arranged in the accommodating recess, the pressing member is made of a metal material at least in a portion in contact with the heat storage member. According to this aspect, since the portion of the pressing member is made of a metal material, heat from the light source can be uniformly transferred to the heat storage member via the portion of the pressing member made of the metal material.

In another more preferred embodiment when the support member is a support beam, the support beam is formed with a cavity portion for accommodating the light source and the heat storage member along the longitudinal direction of the support beam. The support beam is formed with an opening for exposing the light source from the cavity, the light source is arranged so as to be exposed from the opening, and the heat storage member is formed in the cavity. It is arranged so as to be in contact with the inner wall surface, and the mounting member is fixed to the support beam and the wall surface in a state of being inserted from both sides of the cavity portion.

According to this aspect, the mounting member for attaching the support beam to the wall surface is fixed to the support beam and the wall surface in a state of being inserted from both sides of the cavity portion of the support beam, so that the mounting member fits in the cavity portion. As a result, it is possible to prevent the mounting member from being exposed in the room and enhance the aesthetic appearance of the room. Further, since the support beam is attached to the wall surface via the attachment member, the support beam can be easily attached and detached. As a result, the lighting unit can be easily installed in the indoor space.

Further, since the light source accommodated in the accommodating recess of the support beam is exposed from the opening, the light of the light source can be applied to the ceiling surface through the opening. Further, since the heat storage member is in contact with the inner wall surface of the cavity, the heat generated by the light source and stored by the heat storage member can be efficiently dissipated indoors via the support beam.

In a more preferred embodiment, a pressing member that presses the inner wall surface of the cavity via the heat storage member is arranged in the cavity. According to this aspect, since the pressing member presses the inner wall surface of the cavity through the heat storage member, the generation of a gap between the heat storage member and the inner wall surface is suppressed, and the heat from the heat storage member is transferred through the support beam. It is possible to dissipate heat more efficiently in the room.

In a more preferable embodiment of the pressing member arranged in the cavity portion, the pressing member is made of a metal material at least in a portion in contact with the heat storage member. According to this aspect, since the portion of the pressing member is made of a metal material, heat from the light source can be uniformly transferred to the heat storage member via the portion of the pressing member made of the metal material.

In another preferred embodiment, the lighting unit further includes a panel material arranged so as to face the room, and the heat storage member is arranged between the panel material and the room surface.

According to this aspect, since the heat storage member is arranged between the panel material and the indoor surface, the heat stored in the latent heat storage material of the heat storage member can be dissipated into the room through the panel material. Further, when a gap corresponding to the thickness of the heat storage member is formed between the panel material and the indoor surface, the heat stored by the latent heat storage material of the heat storage member is dissipated in the space forming the gap. can do.

In a more preferred embodiment, the light source is an LED light source, the lighting unit includes a converter that converts an alternating current into a direct current, and the LED light source is supplied with the direct current from the converter. As such, it is connected to the converter, and the converter is arranged in the heat storage member.

According to this aspect, since the LED light source is used as the light source, not only the indoor surface can be illuminated with low power, but also if the latent heat storage material melts, the wiring of the LED light source is short-circuited by the latent heat storage material. However, sparks are unlikely to occur. Further, in this aspect, the heat generated from the converter can be stored by the latent heat storage material of the heat storage member.

Further, the life of the LED element of the LED light source is shortened by using it for a long time in a high temperature environment. However, according to the present invention, the latent heat storage material absorbs the heat generated from the LED light source. The life of the LED can be extended. Here, when the converter is arranged adjacent to the LED light source, the LED element adjacent to the converter is easily exposed to a high temperature environment due to the heat of the converter. However, in this aspect, since the heat generated from the converter can be absorbed by the latent heat storage material of the heat storage member, even if the LED light source is arranged adjacent to the converter, the LED element adjacent to the converter Deterioration can be suppressed.

According to the present invention, the heat generated from the light source can be stored, and the stored heat can be suitably dissipated indoors.

(A) is a schematic perspective view of a state in which the lighting unit according to the first embodiment of the present invention is attached to the ceiling surface, and (b) is a schematic perspective view of a main part of the lighting unit. It is a schematic cross-sectional view of the state which the lighting unit is attached to the ceiling surface as shown in FIG. 1A. It is a schematic sectional view for demonstrating the light source of the lighting unit shown in FIG. 1B. (A) to (d) are schematic cross-sectional views according to the first to fourth modified examples of the lighting unit shown in FIG. It is a schematic cross-sectional view of the state where the lighting unit shown in FIG. 2 is attached to a wall surface. It is a schematic perspective view of the state which the lighting unit which concerns on 2nd Embodiment of this invention is attached to a wall surface. It is a schematic disassembled perspective view for demonstrating the mounting structure of the lighting unit shown in FIG. It is a schematic cross-sectional view along the arrow view of the line AA of FIG. (A) and (b) are schematic cross-sectional views according to the first and second modification of the lighting unit shown in FIG. It is a schematic perspective view of the state which the lighting unit which concerns on the further modification of 2nd Embodiment of this invention is attached to the wall surface. It is a schematic disassembled perspective view for demonstrating the mounting structure of the lighting unit shown in FIG. It is a schematic cross-sectional view along the arrow view of the line BB of FIG. (A) and (b) are schematic cross-sectional views according to the first and second modification of the lighting unit shown in FIG. (A) is a schematic cross-sectional view of a state in which the lighting unit according to the third embodiment of the present invention is mounted on a wall surface, and (b) is a schematic diagram showing a modified example of the lighting unit shown in (a). It is a sectional view.

Hereinafter, the lighting unit according to the present invention will be described with reference to FIGS. 1 to 14 according to three embodiments.

[First Embodiment]
FIG. 1A is a schematic perspective view of a state in which the lighting unit 1A according to the first embodiment of the present invention is attached to the ceiling surface T, and FIG. 1B is a schematic view of a main part of the lighting unit 1A. It is a perspective view. FIG. 2 is a schematic cross-sectional view showing a state in which the lighting unit 1A shown in FIG. 1A is attached to the ceiling surface T. FIG. 3 is a schematic cross-sectional view for explaining the light source of the lighting unit 1A shown in FIG. 1 (b).

As shown in FIG. 1, the lighting unit 1A according to the present embodiment is a lighting unit for cornice lighting that indirectly illuminates the ceiling surface (indoor surface) T of the room R by reflecting light. As shown in the present embodiment, the lighting unit 1A is arranged on the space side of the room R with respect to the ceiling surface T which is the room surface.

As shown in FIG. 2, the lighting unit 1A includes a light source 2, a heat storage member 3 that stores heat generated by the light source 2, and a support member 4 that supports the light source 2 together with the heat storage member 3. In the present embodiment, the light source 2 is an LED light source, and is arranged in the vicinity of the ceiling surface T that reflects light so as to illuminate the room R by reflecting light on the ceiling surface (indoor surface) T. Specifically, in the present embodiment, the light source 2 is arranged at a position facing the ceiling surface T.

As described above, the light source 2 is an LED light source (LED module) and is a surface-mounted LED. In the present embodiment, the lighting unit 1A further includes a converter (AC adapter) 5 that converts an alternating current into a direct current. Specifically, the converter 5 is connected to a commercial power source and converts 100 V AC from the commercial power source into 24 V DC or 12 V DC. The LED light source is connected to the converter 5 so that the direct current converted by the converter 5 is supplied.

The light source 2 includes a plurality of LED elements 21 on one side of the elongated substrate 22 (the side on which the light source 2 emits light), and the plurality of LED elements 21 are arranged in series along the longitudinal direction of the substrate 22. Have been placed. As shown in FIG. 3, the substrate 22 and the LED element 21 are connected by a bonding wire 23. As a result, the current (electric power) from the substrate 22 connected to the power source (not shown) via the converter 5 is supplied to the LED element 21 through the bonding wire 23, and the LED element 21 can emit light.

Further, a reflector 24 is arranged on one surface of the substrate 22, and the LED element 21 is housed in a recess 25 formed by the substrate 22 and the reflector 24. A transparent resin 26 is sealed in the recess 25 with the LED element 21 housed therein. In this way, a part of the light emitting LED element can reflect the reflector 24 via the resin 26 to illuminate the ceiling surface T.

In the present embodiment, a general surface-mounted LED has been described as an example, but for example, a lamp-type LED may be used as long as it can illuminate an indoor surface such as a ceiling surface T. In this way, by using the LED light source for the light source 2, not only the ceiling surface T can be illuminated with low power, but also the wiring of the light source 2 is tentatively made by the latent heat storage material when the latent heat storage material described later is melted. Sparks are unlikely to occur even if a short circuit occurs.

The heat storage member 3 is arranged on the other side surface of the substrate 22 of the light source 2 (the back surface on the side where the light source 2 emits light), and has a latent heat storage material that stores heat generated from the light source 2. The converter 5 is arranged (mounted) on one end side of the heat storage member 3 at a position adjacent to the light source 2. The heat storage member 3 may be, for example, a tube-shaped body in which both ends are sealed containing the latent heat storage material. For example, the latent heat that becomes gel-like on a base material such as wood or a porous material at a phase change temperature or higher. It may be impregnated with a heat storage material.

The material of the latent heat storage material is not particularly limited as long as the heat generated from the LED element 21 and the substrate 22 constituting the light source 2 can be stored. The phase change temperature of the latent heat storage material from the liquid phase to the solid phase is preferably 18 to 25 ° C., and when a gel-like latent heat storage material is used, it preferably has a heat resistance of 80 ° C. or higher. ..

Examples of the material of such a latent heat storage material include n-hexadecane, n-heptadecane, n-octadecane, n-nanodecane and the like, and aliphatic hydrocarbons such as n-paraffin and paraffin wax composed of a mixture thereof. Long-chain fatty acids composed of octanoic acid, caprylic acid, lauric acid, myristic acid, etc. and mixtures thereof, polyether compounds such as esters of the above fatty acids and polyethylene glycol, sodium sulfate hydrate, calcium chloride hydrate, etc. Can be mentioned.

Here, the heat storage member 3 contains an amount of latent heat storage material corresponding to the power consumption of the light source 2. For example, in the case of the light source 2 (LED light source) for 10 tatami mats, the power consumption is 60 W / h, and when the lighting time of the light source 2 is 5 hours, a latent heat storage material that stores a capacity of about 300 W is used. , It is contained in the heat storage member 3. Further, when the converter 5 generates more heat than the light source 2, the size of the heat storage member 3 arranged in the converter 5 may be larger than that of other parts. As a result, the heat radiated in the vicinity of the converter 5 can be stored, and the heat can be suppressed from escaping to the light source 2.

The support member 4 is a member that supports the light source 2 via the heat storage member 3 in the room R, and is attached to the ceiling surface T via the metal fitting 91. The material of the support member 4 may be wood, resin, metal, or the like as long as the appearance of the interior R is not impaired.

The support member 4 is composed of channels having an L-shaped cross section, and extends in a direction orthogonal to the mounting portion 41 via a flat plate-shaped mounting portion 41 on which the light source 2 is mounted together with the heat storage member 3 and a bent portion 42. It is provided with a light shielding unit 43 that shields the light of the light source toward the room R. By providing the light-shielding portion 43, the room R can be indirectly illuminated.

When mounting the lighting unit 1A on the ceiling surface T, the heat storage member 3 and the light source 2 are mounted in order on the mounting portion 41 of the support member 4 via an adhesive, and an L-shaped metal fitting for fixing is mounted. It is fixed to the ceiling surface T by the fixture 92 via the 91.

According to the present embodiment, as shown in FIG. 1, since the lighting unit 1A is arranged on the space side of the room R with respect to the ceiling surface T, the light source 2 and the light source 2 arranged so as to irradiate the ceiling surface T The heat generated from the converter 5 melts the latent heat storage material of the heat storage member 3 arranged on the other side of the substrate 22. As a result, the heat of the light source 2 and the converter 5 can be stored by the latent heat storage material.

The heat generated by the light source 2 and the converter 5 is temporarily stored by the latent heat storage material of the heat storage member 3, and after the light of the light source 2 is turned off, the heat stored by the latent heat storage material is stored in the room as the temperature of the room R decreases. It can dissipate heat to R. The heat stored from the latent heat storage material is dissipated until the molten latent heat storage material solidifies. As a result, for example, after turning off the indoor R at night and before going to bed, the temperature of the indoor R does not immediately decrease, and the temperature decrease of the indoor R can be delayed.

Further, in an environment where sunlight enters a room heated in winter and the room temperature rises sharply, excess heat in the room can be absorbed by the latent heat storage material of the heat storage member 3, so that the room temperature Can suppress the rapid rise of. As a result, the heating cost can be suppressed by utilizing the heat from the latent heat storage material of the heat storage member 3 while suppressing the discomfort caused by the sudden rise in the room temperature. In particular, it is effective to apply the lighting unit 1A according to the present embodiment in a highly airtight and highly insulated house whose indoor temperature is likely to change due to heat generated by solar radiation and heating equipment.

Further, in the present embodiment, since the light source 2 and the heat storage member 3 can be arranged in the space of the room R by using the support member 4, the heat stored by the latent heat storage material of the heat storage member 3 is supported. Heat can be efficiently dissipated by the indoor R via the member 4.

By the way, when an LED light source is used as the light source 2, the life of the LED element 21 is shortened by using it for a long time in a high temperature environment. In particular, when the light source 2 is used as indirect lighting as in the present embodiment, the light source 2 is housed in the space formed between the support member 4 and the ceiling surface (indoor surface) T, so that this space. The heat of the light source 2 tends to be trapped inside.

However, in the present embodiment, since the latent heat storage material of the heat storage member 3 absorbs the heat generated from the light source 2 in the space formed by the support member 4 and the ceiling surface T, the LED element 21 is in a high temperature environment for a long time. You will not be exposed to the bottom. As a result, the life of the LED element 21 can be extended. Further, since the heat generated from the converter 5 can be absorbed by the heat storage member 3, even if the light source 2 is arranged adjacent to the converter 5, the deterioration of the LED element 21 adjacent to the converter 5 is suppressed. be able to.

4 (a) to 4 (d) are schematic cross-sectional views according to the first to fourth modified examples of the lighting unit 1A shown in FIG. For example, in the first modification shown in FIG. 4A, the heat storage member 3A is formed so as to spread from the back surface of the light source 2 toward the mounting portion 41 of the support member 4. As a result, the contact area between the heat storage member 3A and the mounting portion 41 can be increased, and the heat stored in the heat storage member 3A can be dissipated more efficiently via the mounting portion 41.

Further, as shown in FIG. 4B, in the second modification, a plurality of concave grooves 31 are formed on the side surface of the heat storage member 3B. As a result, fins for radiating heat from the heat storage member 3B are formed on the side surface of the heat storage member 3B. As a result, when the light source 2 is turned on, the heat of the light source is absorbed from the substrate 22 of the light source 2, and when the light source 2 is turned off, the heat of the heat storage member 3B can be dissipated more efficiently.

Further, as shown in FIG. 4C, in the third modification, the fins 44 may be formed on the surface of the mounting portion 41 of the support member 4 facing the room R. As a result, the heat radiated from the heat storage member 3 can be efficiently radiated to the room R via the fins 44 of the mounting portion 41.

Further, as shown in FIG. 4D, in the fourth modification, a metal layer 45 made of aluminum foil or the like is formed between the heat storage member 3 and the mounting portion 41 of the support member 4. .. As a result, the heat radiated from the heat storage member 3 is uniformly transferred to the mounting portion 41 of the support member 4 via the metal layer 45. As a result, the heat radiated from the heat storage member 3 can be efficiently radiated to the room R via the mounting portion 41.

FIG. 5 is a schematic cross-sectional view of the lighting unit 1A shown in FIG. 2 attached to the wall surface W. In the first embodiment described above, the lighting unit 1A is attached to the ceiling surface T forming the indoor R. For example, as shown in FIG. 5, the lighting unit 1A is attached to the wall surface W forming the indoor R. May be good. In this case, the support member 4 and the mounting portion 41 are fixed to the wall surface W by using the metal fitting 91 and the fixture 92.

[Second Embodiment]
The lighting unit 1B according to the second embodiment will be described below. FIG. 6 is a schematic perspective view of a state in which the lighting unit 1B according to the second embodiment of the present invention is attached to the wall surface W, and FIG. 7 is for explaining the attachment structure of the lighting unit 1B shown in FIG. It is a schematic disassembled perspective view. FIG. 8 is a schematic cross-sectional view taken along the line AA of FIG.

The difference between the lighting unit 1B according to the second embodiment and that of the first embodiment is that, as shown in FIG. 6, the support member 4 is a support beam 4A that passes between the wall surfaces, and the support beam 4A is The point is that it is mounted on the wall surface via the mounting member 8A. Hereinafter, members having the same function as the members according to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 6, in the present embodiment, the support member 4 is a support beam 4A arranged so as to pass between the facing wall surfaces W and W, and the support beam 4A has end portions 4a on both sides thereof. In 4a, it is attached to the wall surfaces W, W via the attachment members 8A, 8A. The lighting unit 1B mounted between the wall surfaces W and W is supplied with electric power from the ceiling outlet C arranged on the ceiling surface T.

In the present embodiment, the support beams 4A are attached to the wall surfaces W and W via the mounting members 8A and 8A so as to pass between the facing wall surfaces W and W. For example, the adjacent wall surfaces W and W are attached. The support beam 4A may be attached to the wall surfaces W, W via the attachment members 8A, 8A so as to pass between the two.

In the present embodiment, the mounting member 8A supports the support beam 4A from below, and as shown in FIG. 7, the mounting member 8A is formed with a housing portion 81 for accommodating the end portion 4a of the support beam 4A. Has been done. Specifically, the accommodating portion 81 is composed of a mounting portion 82 on which the end portion 4a of the support beam 4A is placed and a pair of side wall portions 83, 83 that prevent horizontal movement of both sides of the support beam 4A. It is formed.

As a result, in a state where the end portion 4a of the support beam 4A is accommodated in the accommodating portion 81, each end portion 4a of the support beam 4A is mounted on the mounting portion 82 of the mounting member 8A, and the light source 2 and the heat storage member 3 are placed. The load of the accommodated support member 4 can be received from below by the mounting members 8A and 8A. Further, the pair of side wall portions 83, 83 of each mounting member 8A can suppress the movement of the support beam 4A in the horizontal direction.

The support beam 4A is attached to the wall surface W via a fixture 92 such as a nail or a screw. Further, in the present embodiment, the end portions 4a on both sides of the support beam 4A are mounted on the mounting member 8A without being fixed by a fixture or the like. As a result, the support beam 4A can be easily removed from the mounting member 8A by lifting the support beam 4A, and the light source 2 and the like can be repaired.

Further, since the support beam 4A may be mounted on the mounting member 8A, the support beam 4A can be easily mounted on the mounting member 8A, and the lighting unit 1B can be easily installed. In particular, even when the lighting unit 1B is attached in the remodeling, the lighting unit 1B can be easily installed without changing the structure of the ceiling, which is difficult to understand, and without reinforcing the ceiling with respect to the weight of the lighting unit 1B. Can be attached.

The support beam 4A has a length corresponding to the distance between the wall surfaces W and W, and has a channel 41A having an L-shaped cross section orthogonal to the longitudinal direction and a channel so as to form a housing recess 43A in the support beam 4A. It includes a cover 42A attached to the 41A. The accommodating recess 43A is open upward (ceiling side). In the present embodiment, the support beam 4A is a separate body of the channel 41A and the cover 42A in order to facilitate the attachment / detachment of the light source 2 and the heat storage member 3 in the accommodating recess 43A. For example, the support beam 4A is one. It may be formed from a member. Further, a decorative material or the like may be arranged on the surface of the support beam 4A, and the surface may be patterned by printing or the like.

As described above, the light source 2 and the heat storage member 3 are housed in the housing recess 43A formed in the support beam 4A. The light source 2 is arranged so as to be exposed upward from the opening 43a of the accommodating recess 43A (see FIG. 8). As a result, the light from the light source 2 can be applied to the ceiling surface T through the opening 43a. The light source 2 is supplied with electric power from the plug 51 inserted into the ceiling outlet C via the wiring 52.

On the other hand, the heat storage member 3 is arranged so as to come into contact with the bottom surface (inner wall surface) 43b of the accommodating recess 43A. As a result, since the heat storage member 3 is in contact with the bottom surface (inner wall surface) 43b of the accommodating recess 43A, the heat generated by the light source 2 and stored in the heat storage member 3 is transferred to the indoor R via the support beam 4A. It is possible to dissipate heat efficiently. Further, in the present embodiment, the light source 2 is placed on the upper surface of the heat storage member 3. As a result, the light source 2 can be brought into contact with the heat storage member 3, so that the heat from the light source 2 can be efficiently stored in the heat storage member 3.

9 (a) and 9 (b) are schematic cross-sectional views according to the first and second modified examples of the lighting unit 1B shown in FIG. In the modified example shown in FIG. 9A, the heat storage member 3 is formed on the bottom surface (inner wall surface) 43b of the accommodating recess 43A and the inner surface surfaces (inner wall surface) 43c and 43c that continuously rise from both sides of the bottom surface 43b. Are in contact. Further, in the accommodating recess 43A, a pressing member 7A that presses the inner side surface (inner wall surface) 43c, 43c of the accommodating recess 43A via the heat storage member 3 is arranged. The light source 2 is in contact with the pressing member 7A and is arranged on the heat storage member 3 via the pressing member 7A.

In the state shown in FIG. 9A, the pressing member 7A has a channel shape, and the heat storage member 3 is elastically deformed so as to press the inner side surfaces 43c and 43c of the accommodating recess 43A, and is arranged in the accommodating recess 43A. There is. As a result, in the pressing member 7A, the side wall portion 71, which is elastically deformed inward, is forced to return to its original shape (restoring force that the side wall portion 71 tries to spread outward). At 71, the heat storage member 3 is urged. In the present embodiment, the pressing member 7A urges the heat storage member 3 in the longitudinal direction of the heat storage member 3. With this urging force, the heat storage member 3 presses the inner side surfaces 43c and 43c.

As a result, since the pressing member 7A presses the inner side surfaces 43c and 43c of the accommodating recess 43A via the heat storage member 3, the generation of a gap between the heat storage member 3 and the inner side surface 43c is suppressed, and the heat storage member 3 The heat can be efficiently dissipated by the indoor R via the support beam 4A.

Here, the material of the pressing member 7A is not particularly limited as long as it can be elastically deformed as described above, and examples thereof include a resin material and a metal material. However, in the present embodiment, the pressing member 7A may be used. 7A is made of a metal material such as aluminum or steel. As a result, the heat generated from the light source 2 can be suitably transferred to the pressing member 7A in contact with the light source 2, and the heat transferred to the pressing member 7A can be uniformly transferred to the surface of the heat storage member 3. ..

In addition to this, the pressing member 7A may be a main body made of a resin material coated with a metal film. Even in this case, the heat from the light source 2 can be uniformly transferred to the heat storage member 3 through the metal film of the pressing member 7A via the metal film of the pressing member 7A.

Further, as shown in the modified example of FIG. 9B, the pressing member 7B may be made of an elastic body such as resin, rubber, or a foam thereof. In this case, the pressing member 7B is arranged in the accommodating recess 43A in a state in which the heat storage member 3 is compression-elastically deformed so as to press the inner side surfaces 43c and 43c of the accommodating recess 43A. Further, the surface 72 of the pressing member 7B may be coated with a metal film. As a result, the heat from the light source 2 can be uniformly transferred to the heat storage member 3 via the metal film on the surface 72 of the pressing member 7B.

FIG. 10 is a schematic perspective view of a state in which the lighting unit 1B according to a further modification of the second embodiment of the present invention is attached to the wall surface W, and FIG. 11 shows an attachment structure of the illumination unit 1B shown in FIG. It is a schematic disassembled perspective view for demonstrating. FIG. 12 is a schematic cross-sectional view taken along the line BB of FIG.

The difference between the lighting unit 1B according to the further modification of the second embodiment and that shown in FIG. 6 is that the mounting member 8B is not exposed to the room R as shown in FIG. Hereinafter, members having the same functions as the members according to the second embodiment shown in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 10, also in this modified example, the support beam 4B is a support beam 4B arranged so as to pass between the facing wall surfaces W and W, and the cavity portions 43B formed on both sides of the support beam 4B. The mounting members 8B and 8B are housed in the wall surfaces W and W. The lighting unit 1B mounted between the wall surfaces W and W is supplied with electric power from the ceiling outlet C arranged on the ceiling surface T.

The support beam 4B is formed with a cavity 43B for accommodating the light source 2 and the heat storage member 3 along the longitudinal direction of the support beam 4B. Specifically, the support beam 4B has a length corresponding to the distance between the wall surfaces W and W, and the channel 41B having a U-shaped cross section orthogonal to the longitudinal direction and the opening formed in the channel 41B. It is provided with a cover 42B that covers 41a. In the present embodiment, the hollow portion 43B can be formed in the support beam 4B by covering the opening 41a of the channel 41B with the cover 42B.

In this modified example, the support beam 4B is a separate body of the channel 41B and the cover 42B, but for example, a tubular support beam 4B in which a hollow portion is formed can be obtained by bending at the time of construction. If there is, the support beam 4B may be formed from one member.

The cover 42B constituting the support beam 4B is formed with an opening 43a that exposes the light source 2 from the cavity 43B. The light source 2 is arranged so as to be exposed from the opening 43a. As a result, the light from the light source 2 can be applied to the ceiling surface T through the opening 43a.

The heat storage member 3 is arranged so as to come into contact with the bottom surface 43b of the cavity 43B and the pair of inner side surfaces 43c and 43c. As a result, since the heat storage member 3 is in contact with the bottom surface 43b of the cavity 43B and the pair of inner side surfaces 43c and 43c, the heat generated by the light source 2 and stored in the heat storage member 3 is transferred via the support beam 4B. , It is possible to efficiently dissipate heat indoors. Further, also in this modified example, the light source 2 is placed on the upper surface of the heat storage member 3. As a result, the light source 2 can be brought into contact with the heat storage member 3, so that the heat from the light source 2 can be efficiently stored in the heat storage member 3.

Further, in this modification, the two mounting members 8B and 8B are fixed to the support beam 4B and the wall surface W in a state of being inserted from both sides of the cavity portion 43B. In FIG. 11, the mounting member 8B is mounted on the wall surface W by a fixture (not shown), and the fixture is arranged at a position invisible from the room when it is housed in the cavity 43B. Further, the channels 41B and the mounting member 8B constituting the support beam 4B are formed with holes 41d and 8d for fixing them with the fixture 92. When attaching the support beam 4B, for example, after fixing the channel 41B and the attachment member 8B via the fixture 92, the cover 42B is attached to the channel 41B.

According to this modification, the mounting member 8B for attaching the support beam 4B to the wall surface W is fixed to the support beam 4B and the wall surface W in a state of being inserted from both sides of the cavity 43B of the support beam 4B, and thus is mounted. The member 8B fits in the cavity 43B. As a result, it is possible to prevent the mounting member 8B from being exposed to the interior R and enhance the aesthetic appearance of the interior R. Further, since the support beam 4B is attached to the wall surface W via the attachment member 8B, the support beam 4B can be easily attached and detached. As a result, the lighting unit 1B can be easily installed in the indoor space.

13 (a) and 13 (b) are schematic cross-sectional views according to the first and second modified examples of the lighting unit 1B shown in FIG. In the modified example shown in FIG. 13A, the heat storage member 3 has the bottom surface (inner wall surface) 43b of the cavity 43B and the inner surface surfaces (inner wall surface) 43c and 43c that continuously rise from both sides of the bottom surface 43b. (Inner wall surface) is in contact with a part of 43d. Further, in the cavity portion 43B, a pressing member 7A that presses these inner side surfaces (43b, 43c, 43d) of the cavity portion 43B via the heat storage member 3 is arranged. The light source 2 is arranged on a part of the pressing member 7A and a part of the heat storage member 3.

The pressing member 7A is elastically deformed so as to press the inner wall surfaces via the portions of the heat storage members 3 in contact with the inner wall surfaces (43b, 43c, 43d), and is arranged in the cavity portion 43B. .. In this modification, since the support beam 4B has a tubular shape and a cavity 43B is formed inside, a wide range of the inner wall surface forming the cavity 43B is pressed by the pressing member 7A via the heat storage member 3. It is possible.

The elastic deformation of the pressing member 7A is the same as that described with reference to FIG. 9A. As a result, the heat storage member 3 presses each inner wall surface (43b, 43c, 43d) of the cavity 43B with the pressing member 7A, so that the gap between the heat storage member 3 and the inner wall surface (43b, 43c, 43d) The generation can be suppressed, and the heat from the heat storage member 3 can be efficiently dissipated by the indoor R via the support beam 4A.

Here, the material of the pressing member 7A is the same as that described with reference to FIG. 9A, and is preferably made of a metal material such as aluminum or steel. As a result, the heat generated from the light source 2 can be suitably transferred to the pressing member 7A in contact with the light source 2, and the heat transferred to the pressing member 7A can be uniformly transferred to the surface of the heat storage member 3. ..

Further, as shown in the modified example of FIG. 13B, the pressing member 7B may be made of an elastic body such as resin, rubber, or a foam thereof. In this case, the pressing member 7B is arranged in the cavity 43B in a state in which the heat storage member 3 is compressively elastically deformed so as to press the inner wall surface (43b, 43c, 43d) of the cavity 43B. Further, the surface 72 of the pressing member 7B may be coated with a metal film. As a result, the heat from the light source 2 can be uniformly transferred to the heat storage member 3 via the metal film on the surface 72 of the pressing member 7B.

[Third Embodiment]
The lighting unit 1C according to the third embodiment will be described below. FIG. 14A is a schematic cross-sectional view of a state in which the lighting unit 1C according to the third embodiment of the present invention is attached to the wall surface W. The difference between the lighting unit 1C according to the third embodiment and that of the first embodiment is that a support member is not used as shown in FIG. 14A, and the panel material 7 is further provided. That is the point. Hereinafter, members having the same function as the members according to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 14A, the lighting unit 1C according to the present embodiment includes a plate-shaped heat storage member 3C. The heat storage member 3C is a plate in which a porous material or wood is impregnated with a latent heat storage material, or a latent heat storage material or a plate-shaped porous material or a wood impregnated with a latent heat storage material is incorporated into a frame or the like. Some are shaped like this. When the latent heat storage material or the like is incorporated in the frame, the nails or screws are fixed to the frame, so that the latent heat storage material hardly leaks from the heat storage member 3C.

Further, a light source 2 similar to that of the first embodiment is arranged along the end face of the heat storage member 3C. Further, although not shown, the converter is arranged at a position adjacent to the light source 2 as in the first embodiment, and in the present embodiment, it is arranged on the end face of the heat storage member 3C as in the light source 2. The lighting unit 1B further includes a panel material 7 arranged so as to face the room R. The panel material 7 is attached to the heat storage member 3C so as to form a light-shielding portion 73 that shields the light of the light source 2 toward the room R. With the lighting unit 1C attached to the wall surface W, the heat storage member 3C is arranged between the panel material 7 and the wall surface (indoor surface) W.

In the present embodiment, when the lighting unit 1C is attached to the wall surface W, the lighting unit 1C is fixed to the wall surface W from the panel material 7 side with a fixture 92 such as a nail or a screw, and is attached to the surface of the panel material 7. Paste the decorative material 74 or the like. In the present embodiment, the lighting unit 1B is attached to the wall surface by the fixture 92, but for example, a mounting bracket may be attached to the heat storage member 3C and attached to the wall surface W via the mounting bracket.

FIG. 14B is a schematic cross-sectional view showing a modified example of the lighting unit 1C shown in FIG. 14A. In this modification, the lighting unit 1C'does not include the panel material 7. That is, the lighting unit 1C'according to the modified example includes the light source 2 and the heat storage member 3C.

When the lighting unit 1C'is attached, the heat storage member 3C is arranged on the wall surface W, and the heat storage member 3C is fixed to the wall surface W by the fixture 92. After that, the panel material 7 is attached to the heat storage member 3C.

As described above, in the second embodiment, since the heat storage member 3C is arranged between the panel material 7 and the wall surface W, the heat stored by the latent heat storage material of the heat storage member 3C is transferred to the room through the panel material 7. It can dissipate heat to R. Further, since a gap corresponding to the thickness of the heat storage member 3C is formed between the panel material 7 and the wall surface W, heat is radiated by the latent heat storage material of the heat storage member 3C in the space forming the gap. be able to.

Although the embodiments of the present invention have been described in detail above, the specific configuration is not limited to this embodiment, and even if there are design changes within the scope of the gist of the present invention, they are the present invention. It is included in the invention.

The lighting unit according to the first to third embodiments is attached to the ceiling surface or wall surface of the room via a support member, but may be attached to another indoor surface such as a floor surface via the support member, for example. .. Further, when the indoor surface that reflects the light from the light source is the ceiling surface, the lighting unit may be attached to the wall surface adjacent to the ceiling surface via a support member, and when the indoor surface is the wall surface, the lighting unit may be attached. The unit may be attached to a ceiling surface or a floor surface adjacent to a wall surface via a support member.

1A, 1B, 1C, 1C': Lighting unit 2: Light source, 21: LED element, 22: Substrate, 23: Bonding wire, 24: Reflector, 25: Recess, 26: Resin, 3,3A, 3B, 3C: Heat storage member, 31: concave groove, 4: support member, 4A, 4B: support beam, 41: mounting part, 42: bent part, 43: light-shielding part, 43A: accommodating recess, 43B: cavity part, 44: fin, 45: Metal layer, 5: Converter, 7: Panel material, 73: Light-shielding part, 74: Decorative material, 7A, 7B: Pressing member, 8A, 8B: Mounting member, 91: Metal fitting, 92: Fixture, F: Floor surface, T: ceiling surface, R: indoor, W: wall surface.

Claims (6)

A lighting unit that illuminates a room by reflecting light on at least one room surface such as a ceiling surface, a wall surface, or a floor surface of the room.
The lighting unit is arranged on the space side of the room with respect to the room surface.
The lighting unit includes a light source arranged in the vicinity of the indoor surface that reflects light so as to reflect light on the indoor surface to illuminate the room.
At least a heat storage member having a latent heat storage material that stores heat generated from the light source is provided.
The lighting unit includes the heat storage member and the support member that supports the light source in the room.
The support member is attached to an indoor surface that reflects the light or an indoor surface adjacent thereto.
The support member is a support beam arranged so as to pass between facing wall surfaces or between adjacent wall surfaces, and the support beam is the support beam at both end portions of the support beam via a mounting member. It is mounted on the wall and
The mounting member supports the support beam from below, and supports the support beam from below.
The support beam is formed with a storage recess for accommodating the light source and the heat storage member.
The light source is arranged so as to be exposed from the opening of the accommodating recess.
The heat storage member is arranged so as to come into contact with the inner wall surface of the accommodating recess.
The lighting unit is characterized in that a pressing member that presses the inner wall surface of the storage recess via the heat storage member is arranged in the storage recess . The lighting unit according to claim 1 , wherein at least a portion of the pressing member in contact with the heat storage member is made of a metal material. A lighting unit that illuminates a room by reflecting light on at least one room surface such as a ceiling surface, a wall surface, or a floor surface of the room.
The lighting unit is arranged on the space side of the room with respect to the room surface.
The lighting unit includes a light source arranged in the vicinity of the indoor surface that reflects light so as to reflect light on the indoor surface to illuminate the room.
It is provided with at least a heat storage member having a latent heat storage material that stores heat generated from the light source.
The lighting unit includes the heat storage member and the support member that supports the light source in the room.
The support member is attached to an indoor surface that reflects the light or an indoor surface adjacent thereto.
The support member is a support beam arranged so as to pass between facing wall surfaces or between adjacent wall surfaces, and the support beam is the support beam at both end portions of the support beam via a mounting member. It is mounted on the wall and
A cavity portion for accommodating the light source and the heat storage member is formed in the support beam along the longitudinal direction of the support beam.
The support beam is formed with an opening for exposing the light source from the cavity.
The light source is arranged so as to be exposed from the opening.
The heat storage member is arranged so as to come into contact with the inner wall surface of the cavity.
It said mounting member is in a state of being inserted from opposite sides of said cavity, lighting unit, characterized in that it is fixed to the wall and the support beam. The lighting unit according to claim 3 , wherein a pressing member for pressing the inner wall surface of the cavity through the heat storage member is arranged in the cavity. The lighting unit according to claim 4 , wherein at least a portion of the pressing member in contact with the heat storage member is made of a metal material. The light source is an LED light source.
The lighting unit includes a converter that converts an alternating current into a direct current.
The LED light source is connected to the converter so that the direct current is supplied from the converter.
The lighting unit according to any one of claims 1 to 5 , wherein the converter is arranged in the heat storage member.

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