JP2011238413A - Lamp which uses solid light-emitting element as light source, and illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp to have a solid light-emitting element as a light source of which heat dissipating performance is improved for the size.SOLUTION: The lamp 100 uses the solid light-emitting element as the light source and is equipped with a cabinet 110, a light-emitting module 120, and a driving circuit 130. The cabinet 110 includes an outer wall part 111 corresponding to a side face in a columnar shape in which when a light-emitting face is the upper base, an arbitrary cross-section nearly parallel with the upper base has nearly the same shape, and a partitioning plate 112 nearly parallel with the upper base to divide the space surrounded by the outer wall part 111 into two partial spaces, and is made of metal. The light-emitting module 120 includes the solid light-emitting element 122, is arranged at a first partial space on the upper base side out of the two partial spaces, and installed at a face on the upper base side of the partitioning plate 112. The driving circuit 130 is arranged at a second partial space on a side opposing to the upper base out of the two partial spaces, and emits light by driving the solid light-emitting element 122. The partitioning plate 112 is formed at a position where the first partial space is narrower than the second partial space.

Description

  The present invention relates to a lamp having a built-in drive circuit and using a solid light emitting element such as an LED (Light Emitting Diode) or an EL (Electroluminescence) as a light source, and more specifically, in a small lamp. The present invention relates to a technique for further improving heat dissipation.

In recent years, with the improvement of semiconductor technology, there is an increasing demand for lamps that use solid-state light-emitting elements as light sources.
Since the lamp has a low power consumption and a long life, it greatly contributes to the promotion of energy saving, and is expected to become increasingly popular in the future.

Here, Patent Document 1 discloses a conventional light bulb type lamp using a light emitting element such as an LED as a light source and incorporating a drive circuit.
According to the light bulb type lamp of Patent Document 1, it is described that by providing a metal outer member, the temperature rise of the point light source can be effectively suppressed and further miniaturization can be realized.

JP 2006-313717 A

Solid light-emitting elements such as LEDs and EL tend to have lower luminous efficiency as the temperature rises, and improving heat dissipation is a problem.
On the other hand, from the viewpoints of improving convenience and reducing material costs, there is a demand for downsizing a lamp using a solid light emitting element as a light source.
However, it is difficult to say that the light bulb type lamp of Patent Document 1 sufficiently improves the heat dissipation for the degree of miniaturization due to the fact that the shape is limited to the light bulb type. There is a lot of space, and there is still room for improvement.

  Therefore, an object of the present invention is to provide a lamp using a solid light-emitting element as a light source, and an illuminating device, which has improved heat dissipation for its size. More specifically, in a lamp having a solid-state light-emitting element as a light source and a built-in drive circuit, it is intended to have a simple shape suitable for miniaturization, eliminate wasted space, and improve heat dissipation for its size. To do.

  The present invention is directed to a lamp using a solid light emitting element as a light source. In order to solve the above-described problem, a lamp using a solid light-emitting element as a light source of the present invention is a lamp using a solid light-emitting element as a light source, and includes a housing, a light-emitting module, and a drive circuit. The casing is surrounded by an outer wall portion corresponding to a side surface and an outer wall portion in a columnar shape in which the shape of an arbitrary cross section substantially parallel to the upper bottom is substantially the same when the light emitting surface is an upper bottom. It includes a partition plate that divides the space into two partial spaces and that is substantially parallel to the upper base, and is made of metal. The light emitting module includes a solid light emitting element, is disposed in the first partial space on the upper bottom side of the two partial spaces, and is installed on the surface on the upper bottom side of the partition plate. The drive circuit is disposed in the second partial space of the two partial spaces opposite to the upper base, and drives the solid light emitting element to emit light. The partition plate is formed at a position where the first partial space is narrower than the second partial space.

  In a lamp using a solid light emitting element as a light source, the outer wall portion and the partition plate may be integrally formed of the same metal material in the housing.

Moreover, the lamp using a solid light-emitting element as a light source may further include a connection terminal portion including at least one of various connection terminals that contribute to electrical connection with various external electric appliances.
Further, in a lamp using a solid light emitting element as a light source, the drive circuit includes one input connector that receives supply of power, and there are a plurality of types of connection terminal portions, each of which is one of various connection terminals. The plurality of types of connection terminal portions may include a common output connector that can be connected to the input connector with one touch without using a tool.

  In the lamp using a solid light emitting element as a light source, the connection terminal portion includes a lighting rail plug connected to the lighting rail, and a plurality of the lamps are adjacent to each other and attached to the lighting rail to be integrated. Use as a light source.

  Further, in a lamp using a solid light emitting element as a light source, a plurality of the lamps may be adjacent to each other and attached to a plurality of rows of lighting rails so that an arbitrary range may be a substantially surface light source.

  Further, in a lamp using a solid light emitting element as a light source, the casing has a square, rectangular, rhombus, parallelogram, or regular hexagonal shape in an arbitrary cross section substantially parallel to the upper base, and an arbitrary range is substantially omitted. When the surface light source is used, it is preferable that all of the plurality of lamps are integrated by bringing one surface of the outer wall portion of the casing to face each other between adjacent lamps.

  Further, in a lamp using a solid light emitting element as a light source, the light emitting module has a solid light emitting element mounted on a substrate having a wiring pattern on the surface, and the lamp further includes: The part where the solid-state light-emitting element of the base is not mounted so that the light traveling in a direction different from the upper-bottom direction is reflected and directed toward the upper-bottom direction, and the light emitted from the solid-state light-emitting element does not hit the wiring pattern It is good to have a reflective sheet that hides.

  In order to solve the above problems, an illumination device according to the present invention includes a lamp having a solid light emitting element as a light source, and an electric appliance to which the lamp is attached and which supplies electric power from a commercial power source to the lamp. It is. The lamp includes a housing, a light emitting module, a drive circuit, and a connection terminal portion. The casing is surrounded by an outer wall portion corresponding to a side surface and an outer wall portion in a columnar shape in which the shape of an arbitrary cross section substantially parallel to the upper bottom is substantially the same when the light emitting surface is an upper bottom. It includes a partition plate that divides the space into two partial spaces and that is substantially parallel to the upper base, and is made of metal. The light emitting module includes a solid light emitting element, is disposed in the first partial space on the upper bottom side of the two partial spaces, and is installed on the surface on the upper bottom side of the partition plate. The drive circuit is disposed in the second partial space of the two partial spaces opposite to the upper base, and drives the solid light emitting element to emit light. The connection terminal portion is installed on the lower bottom or the side surface of the column shape and is connected to the lighting fixture. The partition plate is formed at a position where the first partial space is narrower than the second partial space.

As described above, in the lamp and the lighting device of the present invention, the heat generated by the light emitting module is, for example, in a columnar shape such as a cylinder or a prism via the partition plate of the housing where the light emitting module is installed. Heat can be radiated from the outer wall portion of the housing corresponding to the side surface. Here, one of the upper base and the lower base in the columnar shape is a light emitting surface, and all the remaining surfaces or all side surfaces are metal heat dissipation surfaces. Therefore, almost all of the side surfaces of the columnar shape corresponding to the full shape of the lamp can contribute to heat dissipation, so that heat dissipation can be improved to the maximum for its size.
In addition, since the first partial space in which the light emitting module is arranged is narrower than the second partial space in which the driving circuit is arranged, the length from the upper base to the lower base can be shortened for the size of the driving circuit. it can.

  Furthermore, in the lamp according to the present invention, for example, the outer wall portion and the partition plate are integrally formed of the same metal material by, for example, manufacturing the casing by a die casting method, so that the heat conduction between the outer wall portion and the partition plate is performed. In addition to being able to improve performance, it is possible to make it cheaper in terms of assembly man-hours. In particular, the smaller the size becomes, the more difficult the assembly becomes, so the integral molding is suitable for downsizing.

Furthermore, in the lamp of the present invention, since the connection terminal portion including at least one of the various connection terminals is provided, it is possible to use components other than the connection terminal portion as common parts and selectively use the connection terminal portion. it can. Therefore, it is possible to provide various types of lamps that can be connected to various electric appliances while suppressing the total number of parts.
Furthermore, in the lamp of the present invention, since the plurality of types of connection terminal portions include a common output connector, they can be easily attached, removed, and replaced.

  Furthermore, in the lamp of the present invention, a plurality of lamps are adjacent to each other and attached to one or a plurality of rows of lighting rails, so that an integrated light source can be obtained, and the luminance is increased for the installation space. be able to. Further, if the total illuminance is made equal by suppressing the brightness of each lamp, the lighting is gentle to the eyes and not dazzling, the temperature rise is suppressed, the luminous efficiency is improved, and the life is extended.

Furthermore, in the lamp of the present invention, the cross-sectional shape of the casing is adjacent to each other as a square, rectangle, rhombus, parallelogram, or regular hexagon, and is attached to a plurality of rows of lighting rails so that the lamps are gathered between the lamps. An integrated surface light source having no gap can be configured.
Furthermore, in the lamp of the present invention, since the reflection plate hides the wiring pattern on the substrate surface so that light does not hit it, the light is not absorbed by the wiring pattern and the luminance is not lowered. Further, even when an opaque cover such as a diffusion plate is not used, the appearance is clear, the luminance is not attenuated by the diffusion plate, and the functional value is felt depending on the application, so that the commercial value is improved. In addition, the cost of parts can be reduced by the amount that does not require an opaque cover.

The figure which shows the external appearance of the lamp | ramp 100 which uses the solid light emitting element concerning 1st Embodiment as a light source. The figure which shows the external appearance of the cut model of the lamp | ramp 100 cut | disconnected in the dashed-dotted line in FIG. (A)-(c) is a figure which shows the specific example of the arrangement method of the LED element in the light emitting module 120. The figure which shows the lamp | ramp 200 provided with the connection terminal part which can be connected to the socket for light bulbs. The figure which shows the lamp | ramp 300 provided with the connection terminal part which can be connected to the power socket for general households The figure which shows the lamp | ramp 400 provided with the connection terminal part which can be connected to the power socket for general households The figure which shows the lamp | ramp 500 provided with the connection terminal part which can be connected to the socket for lighting rails. The figure which shows a mode that any one of the connection terminal 210 of the lamp | ramp 200, the connection terminal 310 of the lamp | ramp 300, and the connection terminal 510 of the lamp | ramp 500 is attached to the common component 180 which consists of components other than a connection terminal part. The figure which shows a mode that the several lamp 500 of the 1st modification was made to adjoin and was attached to the one lighting rail 600. FIG. The figure which shows a mode that the lamp 500 of the 1st modification was made to adjoin and it was attached to the lighting rail 600 of the adjoining several rows. The figure which shows the external appearance of the cylindrical lamp 700 The figure which shows the external appearance of the cut model of the lamp | ramp 700 cut | disconnected in the dashed-dotted line in FIG. The figure which shows the external appearance of the regular hexagonal column shaped lamp 800 The figure which shows the external appearance of the cut model of the lamp | ramp 800 cut | disconnected in the dashed-dotted line in FIG.

[First Embodiment]
<Overview>
The first embodiment is a lamp having a column shape such as a cylinder or a prism, and an outer wall portion corresponding to a side surface of the column shape, and a partition plate that bisects an internal space surrounded by the outer wall portion. The light emitting module is installed in the inner space on the upper bottom side, and the drive circuit is installed in the inner space on the lower bottom side. Here, the light emitting module includes a solid light emitting element, and is installed on the upper bottom surface of the partition plate. The partition plate is formed at a position closer to the upper bottom so that the inner space on the upper bottom side is narrower than the inner space on the lower bottom side.

With such a configuration, heat generated by the light emitting module is radiated from the outer wall portion of the housing via the partition plate.
Here, since the outer wall portion of the housing is almost the same as the outer shape of the lamp, almost all of the outer shape of the lamp contributes to heat dissipation, so that heat dissipation is improved to the maximum for its size.
In addition, since the inner space on the upper bottom side in which the light emitting module is disposed is narrower than the inner space on the lower bottom side in which the driving circuit is disposed, the length from the upper bottom to the lower bottom is small for the size of the driving circuit. Shorter.

<Configuration>
FIG. 1 is a diagram illustrating an appearance of a lamp 100 that uses the solid-state light emitting device according to the first embodiment as a light source. FIG. 2 is a diagram showing an appearance of a cut model of the lamp 100 cut along the one-dot chain line in FIG.
As shown in FIGS. 1 and 2, the lamp 100 according to the first embodiment is a rectangular prism-shaped lamp having a solid light-emitting element as a light source and a drive circuit built-in each side of about 15 to 30 mm. , A light emitting module 120, a drive circuit 130, a reflection sheet 140, a diffusion sheet 150, an insulating case 160, and a connection terminal portion 170.

  The casing 110 is surrounded by an outer wall portion and an outer wall portion 111 corresponding to a side surface in the shape of a quadrangular prism when the light emitting surface (in FIG. 1 and FIG. 2, the upper surface into which the diffusion plate 150 is fitted) is the upper base. It includes a partition plate 112 that divides the space into two partial spaces and is substantially parallel to the upper base, and is formed of a metal having thermal conductivity such as aluminum. Of the two partial spaces divided by the partition plate 112, when the upper bottom side is a first partial space and the opposite side of the upper base is a second partial space, the partition plate 112 is The space is formed at a position closer to the upper bottom so as to be narrower than the two partial spaces. Further, the partition plate 112 is provided with a through-hole for wiring for connecting the light emitting module 120 and the drive circuit 130. Here, the housing 110 has a shape of “H” in any cross-sectional shape that vertically cuts the main surface of the diffusion sheet 150.

  Here, the outer wall portion 111 and the partition plate 112 may be formed after being separately formed with the same or different metal members, or may be formed in combination, for example, the same metal member such as an aluminum alloy, a zinc alloy, and a magnesium alloy. May be integrally formed by die casting. In particular, when the outer wall portion 111 and the partition plate 112 are integrally formed, the thermal conductivity between the outer wall portion and the partition plate can be increased, and the overall cost can be reduced considering the number of assembly steps. As the assembly becomes smaller, the assembly becomes more difficult. Therefore, the integral molding of the outer wall portion 111 and the partition plate 112 is suitable for downsizing.

  The shape of the housing 110 is a quadrangular prism shape in the present embodiment, but is not limited to this, and the column shape is such that all cross-sectional shapes substantially parallel to the upper base are substantially the same shape. If it is. As representative examples of the columnar shape, a cylinder whose cross-sectional shape is a circle or an ellipse, a quadrangular column whose cross-sectional shape is a square such as a square, a rectangle, a rhombus, and a parallelogram, and a shape of the cross-section. A hexagonal column having a hexagonal shape is conceivable.

  The light emitting module 120 is an illumination module in which one or a plurality of solid state light emitting elements such as LEDs and ELs that are driven by the drive circuit 130 to emit light are united, and is formed on a base 121 having a wiring pattern on the surface. One or more solid state light emitting devices 122 are mounted. The light emitting module 120 is disposed in the first partial space described above, and is installed on the upper bottom surface of the partition plate 112.

  In addition, the light emitting module 120 may be a unitized LED or EL that emits a single color such as red, green, or blue, or a combination of these LEDs or EL of each color as appropriate, and may be white or any other arbitrary color. It may emit light of any color. Further, the light emitting module 120 may be a module that emits white light or any other color by molding a fluorescent material around the LED. For example, the light emitting module 120 may be a module that emits white light by molding a fluorescent material that converts blue into a complementary color of blue around an LED that emits blue light.

In addition, the light emitting module 120 may have a form in which a wavelength conversion member is mounted on a module substrate on which LED elements are primarily mounted, and a form in which a package made of LED elements and phosphors is secondarily mounted on a module substrate.
It is also possible to combine white LEDs having different color temperatures as appropriate. It is also possible to perform toning on the black body locus.
Note that the reflection sheet 140 and the diffusion plate 150 can be eliminated by increasing the diffusion effect of the phosphor particles in the light emitting module 120.
In addition to the light emitting module 120, a member containing phosphor particles may be disposed at the position of the reflection sheet 140 or the diffusion plate 150 to obtain a diffusion effect.

FIGS. 3A to 3C are diagrams illustrating a specific example of a method for arranging LED elements in the light emitting module 120.
As shown in FIG. 3A, for example, the light emitting module 120 has three high-luminance LEDs 123 arranged in a triangle at intervals of about 5 to 15 mm. As shown in FIG. 3B, for example, the light emitting module 120 has 22 LEDs 124 with slightly high luminance arranged two-dimensionally. As shown in FIG. 3C, for example, in the light emitting module 120, 72 small LEDs 125 are two-dimensionally densely arranged in a square of about 10 to 15 mm square.

The drive circuit 130 is an electronic circuit that outputs electric power suitable for lighting the light emitting module 120, includes a circuit component 131 and a circuit board 132, and is arranged in the second partial space.
The reflection sheet 140 has a shape like a truncated pyramid having a square bottom surface, and reflects light traveling in a direction different from the direction toward the upper base out of the light emitted from the solid state light emitting device 122, toward the upper base. In addition, the portion of the base 121 where the solid light emitting element 122 is not mounted is hidden so that the light emitted from the solid light emitting element 122 does not hit the wiring pattern on the base 121.

  The diffusing plate 150 is a translucent resin or glass cover on which a diffusion film for reducing unevenness in luminance is formed by changing the traveling direction of light passing through to different directions and diffusing it. The light emitted from the element 122 and the light that has been reflected by the reflection sheet 140 and diffused are diffused. The diffusion plate 150 is a plate having a shape similar to the shape of the upper bottom of the housing 110, and is smaller by several mm than the upper bottom by the amount of the frame. In the present embodiment, since the casing 110 has a quadrangular prism shape, the shape of the diffusion plate 150 is a rectangular plate similar to the shape of the upper base. Note that the diffuser plate 150 is not necessary when used in applications where uneven brightness is not a problem or when the light emitting module 120 is surface emitting as shown in FIG.

The insulating case 160 is a non-conductive material such as a resin disposed on the inner surface of the second partial space so that unintended electrical contact does not occur between the drive circuit 130 and the housing 110. The container.
It should be noted that the insulation case 160 is not necessary when measures are taken on the drive circuit 130 side to prevent electrical contact with the housing 110.
Further, in the present embodiment, the second partial space of the housing 110 has a substantially quadrangular prism shape, whereas the outer shape of the insulating case 160 is cylindrical, and a space is provided between the housing 110 and the insulating case 160. This makes it difficult for heat from the housing 110 to be transmitted to the drive circuit 130, reduces the heat load on the drive circuit 130, and improves the durability of the drive circuit 130. Further, the insulating case 160 may be made of a material having a particularly low thermal conductivity, or bubbles or cavities may be provided inside the insulating case 160 to make it difficult to transfer the heat of the housing 110 to the drive circuit 130. it can.

The connection terminal portion 170 includes at least one of various connection terminals that contribute to electrical connection with various external electric appliances, and includes a connector 171 for wiring connection, which is a type of connection terminal, various connection terminals, and a circuit board. And a back cover 173 that closes a portion corresponding to the lower bottom of the housing 110. Here, various external electric appliances include, for example, pendant type lighting fixtures equipped with connectors for wiring connection, sockets for light bulbs, wall-fixed type lighting fixtures such as lighting rails, and power sockets for general households. It is. Details of other various connection terminals will be described in the first to third modifications.
Here, components other than the connection terminal portion 170 can be used as common parts, and various connection terminal portions can be selectively used. By doing in this way, many kinds of lamps which can be connected to various electric appliances can be manufactured for the total number of parts without increasing the number of parts so much.

[First Modification]
In a 1st modification, the detail of a connection terminal part provided with various connection terminals is shown. In addition, the same number is attached | subjected to the component similar to the lamp | ramp 100 of 1st Embodiment here, and the description is abbreviate | omitted.
FIG. 4 is a diagram showing a lamp 200 including a connection terminal portion that can be connected to a socket for a light bulb.
As shown in FIG. 4, the lamp 200 includes a connection terminal portion 210 instead of the connection terminal portion 170 of the lamp 100, and the connection terminal portion 210 includes a general light bulb in which the connector 171 for wiring connection is connected. This is a replacement for the base 211 for use.

As described above, since the lamp 200 includes the connection terminal portion 210 including a cap for a light bulb, it can be easily replaced as a substitute for a conventional incandescent light bulb or a light bulb type fluorescent lamp, and its utility value is high.
Although the lamp 200 has a quadrangular prism and the connection terminal portion 210 is screwed, the stop position in the rotational direction is not determined and the appearance may be deteriorated. Therefore, a mechanism capable of adjusting the angle in the rotation direction by 90 degrees or more may be provided between the connection terminal portion 210 and the housing 110 so that the stop position in the rotation direction can be finely adjusted. Further, if the outer shape of the lamp 200 is formed in a shape that does not cause a problem in the rotation direction, such as a cylindrical shape, it is not necessary to finely adjust the stop position in the rotation direction.
The lamp 200 is provided with a base for a general light bulb, but may be provided with a base for another light bulb such as a halogen light bulb.

FIGS. 5 and 6 are diagrams showing lamps 300 and 400 each having a connection terminal portion that can be connected to a power socket for general household use.
As shown in FIG. 5, the lamp 300 includes a connection terminal portion 310 (not shown) instead of the connection terminal portion 170, and the connection terminal portion 310 includes a connector 171 for wiring connection in the connection terminal portion 170. The plug 311 is replaced with a general household plug 311.
The lamp 400 includes a connection terminal portion 410 (not shown) instead of the connection terminal portion 170. The connection terminal portion 410 includes a connector 171 for wiring connection in the connection terminal portion 170 and a plug for general household use. The plug 411 is replaced.

Here, the difference between the lamp 300 and the lamp 400 is only at the place where the plug is attached. The lamp 300 has the plug 311 arranged on the bottom, and the lamp 400 has the plug 411 arranged on the side. is doing. Here, the lower bottom of the lamp 300 is a non-conductive member such as a resin at least around the insertion plug 311. In addition, of the side surfaces of the lamp 400, the periphery of the insertion plug 411 is replaced with a non-conductive member 412 such as a resin without being made of metal.
As described above, since the lamps 300 and 400 can be directly connected to a household power socket, they can be attached to a power socket installed on the wall surface of the room and used as a foot lamp or indirect lighting. It is. Moreover, if a commercially available extension socket is used, lighting can be easily installed anywhere and its utility value is very high.

FIG. 7 is a diagram showing a lamp 500 including a connection terminal portion that can be installed directly on the lighting rail.
As shown in FIG. 7, the lamp 500 includes a connection terminal portion 510 (not shown) instead of the connection terminal portion 170, and the connection terminal portion 510 includes a connector 171 for wiring connection in the connection terminal portion 170. It replaces the direct mounting bracket 511 for the writing rail.
As described above, since the lamp 500 includes the direct mounting bracket 511 for the lighting rail, the lamp 500 can be compactly installed on the lighting rail, and is excellent in convenience and design.
For example, each of the lamps 200, 300, and 500 includes each connection terminal portion including at least one of various connection terminals. Since the components other than the connection terminal portion are the same, this is used as a common component. May be used selectively.
FIG. 8 is a diagram illustrating a state in which any one of the connection terminal 210 of the lamp 200, the connection terminal 310 of the lamp 300, and the connection terminal 510 of the lamp 500 is attached to the common component 180 including components other than the connection terminal portion. is there.
When the connection terminal portion is selectively used, as shown in FIG. 8, the drive circuit 130 in the common component 180 includes one input connector 181 that receives power supply, and the connection terminals 210, 310, 510 are connected. However, it is possible to employ a configuration including a common output connector 182 that can be connected to the input connector 181 with a single hand without using a tool. By adopting such a configuration, it is easy to attach, remove, and replace the connection terminal portion.
Therefore, it is possible to provide various types of lamps that can be connected to various electric appliances while suppressing the total number of parts.

[Second Modification]
In the second modified example, a plurality of lamps are adjacent to each other and attached to one lighting rail.
FIG. 9 is a diagram illustrating a state in which a plurality of lamps 500 according to the first modification are adjacent to each other and attached to one lighting rail 600.
As shown in FIG. 9, by attaching a plurality of lamps 500 adjacent to the lighting rail 600, a linearly integrated light source can be formed, and the brightness can be easily increased for the installation space. it can.
Further, if the total illuminance is made equal by suppressing the brightness of each lamp, the illumination is gentle to the eyes and the glare is suppressed, the temperature rise is suppressed, the luminous efficiency is improved, and the life of the lamp itself is extended.

[Third Modification]
In the third modified example, a plurality of lamps are adjacent to each other and attached to a plurality of rows of lighting rails.
FIG. 10 is a diagram illustrating a state in which a plurality of lamps 500 according to the first modification are adjacent to each other and attached to adjacent rows of lighting rails 600.
As shown in FIG. 10, a plurality of lamps 500 are adjacent to each other and attached to a plurality of adjacent adjacent lighting rails 600, and one surface of the outer wall portion of the housing faces each other between the adjacent lamps 500. By making them close to each other, it is possible to form a light source in which all of the plurality of lamps 500 are integrated into a plane without leaving a uniform gap, and almost all of the installation space can be used as an irradiation surface.

  In this modification, the shape of the upper base is a square prism, but the shape of the upper base is square even if the shape of the upper base is a rectangle, rhombus, parallelogram, or regular hexagon. As in the case of a certain case, it is possible to form a light source in which all of the plurality of lamps 500 are integrated in a plane without leaving a uniform gap, and almost all of the installation space can be used as an irradiation surface. .

[Fourth Modification]
In the first embodiment, the shape of the lamp 100 is a quadrangular prism, but may be any other shape as long as the shape of an arbitrary cross section substantially parallel to the upper base is substantially the same. . In the fourth modification, examples of a cylindrical lamp 700 and a regular hexagonal lamp 800 are shown. In addition, the same number is attached | subjected to the component similar to the lamp | ramp 100 of 1st Embodiment here, and the description is abbreviate | omitted.
FIG. 11 is a view showing the appearance of a cylindrical lamp 700. As shown in FIG. FIG. 12 is a view showing the appearance of a cut model of the lamp 700 cut along the one-dot chain line in FIG.
As shown in FIGS. 11 and 12, the configuration of the cylindrical lamp 700 is the same as that of the lamp 100 in the first embodiment except that the outer shape is a cylinder.

Specifically, the casing 110 of the lamp 100 is replaced with the casing 710, the reflection sheet 140 of the lamp 100 is replaced with the reflection sheet 740, and the diffusion plate 150 of the lamp 100 is replaced with the diffusion plate 850.
The casing 710 is surrounded by an outer wall portion and an outer wall portion 711 corresponding to a side surface in a columnar shape when the light emitting surface (in FIG. 11, 12, the upper surface into which the diffusion plate 750 is fitted) is the upper bottom. And a partition plate 712 that is substantially parallel to the upper base and divides the space into two partial spaces. Here, features other than the shape of the housing 710 are the same as those of the housing 110.
The reflection sheet 740 has a shape like a truncated cone having a circular bottom surface, and features other than the shape are the same as those of the reflection sheet 140.
The diffuser plate 750 has a circular plate shape, and features other than the shape are the same as those of the diffuser plate 150.

FIG. 13 is a view showing the appearance of a regular hexagonal prism-shaped lamp 800. FIG. 14 is a diagram showing the appearance of a cut model of the lamp 800 cut along the one-dot chain line in FIG.
As shown in FIG. 13, the configuration of a regular hexagonal prism-shaped lamp 800 is the same as that of the lamp 100 in the first embodiment except that the outer shape is a regular hexagon.
Specifically, the casing 110 of the lamp 100 is replaced with the casing 810, the reflection sheet 140 of the lamp 100 is replaced with the reflection sheet 840, and the diffusion plate 150 of the lamp 100 is replaced with the diffusion plate 850.

The casing 810 is surrounded by an outer wall portion and an outer wall portion 811 corresponding to a side surface in a columnar shape when the light emitting surface (in FIG. 13, 14, the upper surface into which the diffusion plate 850 is fitted) is the upper base. A partition plate 812 that divides the space into two partial spaces and that is substantially parallel to the upper base. Here, features other than the shape of the housing 810 are the same as those of the housing 110.
The reflective sheet 840 has a shape like a truncated pyramid having a hexagonal bottom surface, and features other than the shape are the same as those of the reflective sheet 140.
The diffuser plate 850 has a hexagonal plate shape, and features other than the shape are the same as those of the diffuser plate 150.

<Summary>
As described above, according to the lamps of the first embodiment and the first to fourth modified examples, the heat generated by the light emitting module is radiated from the outer wall portion of the housing via the partition plate. Can do.
Here, since the outer wall portion of the housing is almost the same as the outer shape of the lamp, almost all of the outer shape of the lamp can contribute to heat dissipation, so that heat dissipation is improved to the maximum for its size. be able to.

In addition, since the inner space on the upper bottom side where the light emitting module is arranged is narrower than the inner space on the lower bottom side where the driving circuit is arranged, the length from the upper base to the lower bottom is set for the size of the driving circuit. Can be shortened.
Therefore, heat dissipation can be improved for the size.
As long as there is no contradiction, the first embodiment and the first to fourth modifications may be appropriately combined.

  Since the lamp of the present invention can maximize heat dissipation for its size, it can be applied to all lighting devices such as general household lighting and outdoor lights. In particular, the lamp of the present invention dissipates the heat generated by the light emitting module to the outside from the columnar outer wall portion of the casing via the partition plate of the casing, so that the shape of the lamp is full. Almost all of the aspects can contribute to heat dissipation, and its industrial utility value is extremely high.

DESCRIPTION OF SYMBOLS 100 Lamp 110 Housing | casing 111 Outer wall part 112 Partition plate 120 Light emitting module 121 Base 122 Solid light emitting element 123, 124, 125 LED
DESCRIPTION OF SYMBOLS 130 Drive circuit 131 Circuit component 132 Circuit board 140 Reflection sheet 150 Diffusion plate 160 Insulation case 170 Connection terminal part 171 Connector for wiring connection 172 Connection cable 173 Back cover 180 Common part 181 Input connector 182 Output connector 200 Lamp 210 Connection terminal part 211 Cap for general light bulb 300 Lamp 310 Connection terminal portion 311 Plug plug 400 Lamp 410 Connection terminal portion 411 Plug 412 Non-conductive member 500 Lamp 510 Connection terminal portion 511 Direct attachment bracket for lighting rail 600 Lighting rail 700 Lamp 710 Housing 711 Outer wall portion 712 Partition plate 740 Reflective sheet 750 Diffuser plate 800 Lamp 810 Housing 811 Outer wall portion 812 Partition plate 840 Reflective sheet 850 Diffuser plate

Claims (9)

A lamp using a solid light emitting element as a light source,
When the light emitting surface is an upper base, an outer wall portion corresponding to a side surface and a space surrounded by the outer wall portion in a columnar shape in which an arbitrary cross section substantially parallel to the upper base is substantially the same shape A metal housing including a partition plate that is substantially parallel to the upper base, and is divided into partial spaces;
A light-emitting module including the solid-state light-emitting element, disposed in the first partial space on the upper bottom side of the two partial spaces, and installed on a surface on the upper bottom side of the partition plate;
A driving circuit that is arranged in a second partial space on the opposite side of the upper bottom of the two partial spaces and that drives the solid-state light emitting element to emit light;
The lamp is characterized in that the partition plate is formed at a position where the first partial space is narrower than the second partial space. In the housing,
The lamp according to claim 1, wherein the outer wall portion and the partition plate are integrally formed of the same metal material. The lamp further includes
The lamp according to claim 1, further comprising a connection terminal portion including at least one of various connection terminals that contribute to electrical connection with various external electric appliances. The drive circuit is
Including one input connector to receive power supply,
The connection terminal portion is
There are multiple types, each including one of the various connection terminals,
4. The lamp according to claim 3, wherein the plurality of types of connection terminal portions include a common output connector that can be connected to the input connector with one touch without using a tool. The connection terminal portion includes a lighting rail plug connected to the lighting rail,
The lamp according to claim 3, wherein a plurality of the lamps are adjacent to each other and attached to the lighting rail to form an integrated light source.   6. The lamp according to claim 5, wherein a plurality of the lamps are adjacent to each other and attached to a plurality of rows of lighting rails so that an arbitrary range is used as a substantially surface light source. The casing has a shape of an arbitrary cross section substantially parallel to the upper base is a square, a rectangle, a rhombus, a parallelogram, or a regular hexagon,
When an arbitrary range is used as a substantially surface light source, between the adjacent lamps, one surface of the outer wall portion of the housing faces each other and comes close to each other, so that all of the plurality of the lamps become an integrated light source. The lamp according to claim 6. The light emitting module has the solid light emitting element mounted on a substrate having a wiring pattern on the surface,
The lamp further includes
Of the light emitted from the solid state light emitting device, the light reflected in the direction different from the upper base direction is reflected and directed toward the upper base direction, and the light emitted from the solid state light emitting device does not hit the wiring pattern. The lamp according to claim 1, further comprising a reflective sheet that hides a portion where the solid light emitting element of the base is not mounted. A lighting device comprising a lamp having a solid light-emitting element as a light source, and an electric appliance to which the lamp is attached and supplies electric power from a commercial power source to the lamp,
The lamp is
When the light emitting surface is the upper base, the outer wall portion corresponding to the side surface and the space surrounded by the outer wall portion in the columnar shape whose arbitrary cross section substantially parallel to the upper base is substantially the same shape A metal housing including a partition plate that is substantially parallel to the upper base, and is divided into partial spaces;
A light-emitting module including the solid-state light-emitting element, disposed in the first partial space on the upper bottom side of the two partial spaces, and installed on a surface on the upper bottom side of the partition plate;
A drive circuit disposed in a second partial space on the opposite side of the upper bottom of the two partial spaces, and driving the solid-state light emitting element to emit light;
It is installed on the bottom or side surface of the columnar shape, and includes a connection terminal portion connected to the lighting fixture,
The said partition plate is formed in the position where the said 1st partial space becomes narrower than the said 2nd partial space, The illuminating device characterized by the above-mentioned.

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