JP2010165647A - Illuminating device - Google Patents

Illuminating device Download PDF

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Publication number
JP2010165647A
JP2010165647A JP2009009290A JP2009009290A JP2010165647A JP 2010165647 A JP2010165647 A JP 2010165647A JP 2009009290 A JP2009009290 A JP 2009009290A JP 2009009290 A JP2009009290 A JP 2009009290A JP 2010165647 A JP2010165647 A JP 2010165647A
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JP
Japan
Prior art keywords
housing
light emitting
support
lighting device
direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2009009290A
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Japanese (ja)
Inventor
Satoshi Fujiwara
Hiroshi Ito
Naoki Kataoka
Yukitoshi Kawai
Kiyoharu Nagata
Tami Shioda
廣 伊藤
多美 塩田
清治 永田
行利 河合
直紀 片岡
聡 藤原
Original Assignee
Momo Alliance Co Ltd
株式会社モモ・アライアンス
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Application filed by Momo Alliance Co Ltd, 株式会社モモ・アライアンス filed Critical Momo Alliance Co Ltd
Priority to JP2009009290A priority Critical patent/JP2010165647A/en
Publication of JP2010165647A publication Critical patent/JP2010165647A/en
Application status is Granted legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/27Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/90Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

A straight tube type LED lighting device that can be suitably realized as an LED lighting device that is long in the longitudinal direction.
A lighting device includes a support that supports a solid light emitting element and a support that is disposed in a hollow structure along a longitudinal direction, and at least emits light in a light emitting direction of the solid light emitting element. The support body 21 and a predetermined region of the inner wall surface of the hollow structure of the housing 3 are arranged in close contact with each other, and the predetermined region is at an arbitrary end surface perpendicular to the longitudinal direction of the housing 3. , Located on both sides symmetrical to the central axis.
[Selection] Figure 5

Description

  The present invention relates to an illuminating device, and more particularly to an illuminating device using a solid light emitting element as a light source.

  2. Description of the Related Art In recent years, solid-state light-emitting elements, particularly light-emitting diodes, have attracted attention as new light sources that replace lamps such as incandescent bulbs, fluorescent lamps, and mercury lamps, as environmental awareness increases. This is because a light emitting diode (hereinafter referred to as LED) is a light source that has a longer life than the light sources of the lamps described above, and does not contain harmful substances such as mercury and lead, that is, an environmentally friendly light source. It is.

  Among LEDs, a so-called high power LED having an input capacity of 1 W or more has a high emission intensity and is optimal for lighting applications. In addition, the light conversion efficiency of LEDs has been improving year by year, and in the future, illumination using LEDs as light sources is also expected to be energy-saving light sources.

  Here, in an illuminating device using LEDs (hereinafter referred to as an LED illuminating device), it is necessary to appropriately process (heat radiate) the heat generated as the LED driving loss. The LED has a characteristic that it has a long life as described above. However, in order to exhibit this, it is necessary to appropriately perform the heat dissipation and use it within a range where the temperature does not become too high. Because there is.

  In addition, the LED lighting device has a feature that its shape and the like can be designed with a high degree of freedom, but in order not to make the user feel uncomfortable with the illumination by the conventional fluorescent lamp, a straight tube type fluorescent lamp or the like Attention has also been focused on LED lighting devices simulating the shape.

  In view of this, Patent Literature 1 discloses a waterproof illumination device that is a straight tube type LED illumination device.

  In this waterproof illuminating device, heat generated as a loss from the LED inserted in the straight tube-type transparent cylindrical portion can be radiated by the heat radiating plate provided.

Utility Model Registration No. 3121894

  However, it is considered that the waterproof illumination device disclosed in Patent Document 1 is difficult to realize as an LED illumination device that is long in the longitudinal direction.

  For this reason, when the length of the waterproof lighting device disclosed in Patent Document 1 is long, the cylindrical portion corresponding to the straight pipe is naturally long. In this case, it becomes easy to warp based on the cylindrical portion becoming longer. Here, the waterproof illumination device disclosed in Patent Document 1 does not suggest a response to this warp. Therefore, when the warp occurs, the state where the warp occurs becomes the appearance of the waterproof illumination device. This may impair the aesthetic appearance and thus impair user convenience. Therefore, the waterproof illumination device disclosed in Patent Document 1 is difficult to realize as an LED illumination device that is long in the longitudinal direction.

  The present invention has been made in view of the above circumstances, and is an LED lighting device that can avoid the influence of warping of a straight tube, and can be suitably realized particularly as an LED lighting device that is long in the longitudinal direction. An object of the present invention is to provide an LED lighting device.

  In order to achieve the above object, an illuminating device according to the present invention is an illuminating device using a solid-state light-emitting element, wherein the solid-state light-emitting element is supported in a hollow structure along a longitudinal direction. And a housing means having translucency in at least the light emitting direction of the solid state light emitting device, wherein the supporting means and a predetermined region of the inner wall surface of the hollow structure are arranged in close contact with each other, and the housing means In any end face perpendicular to the longitudinal direction, the predetermined region is located on both side faces symmetrical to the central axis of the arbitrary end face.

  With this configuration, the force for generating warp in the casing means is generated symmetrically with respect to the central axis on the end surface in the direction perpendicular to the longitudinal direction of the casing means. For this reason, these forces cancel each other, and the occurrence of warpage of the casing means can be suppressed. Thereby, the illuminating device using the straight tube | pipe type solid light emitting element long in a longitudinal direction can be provided.

  Here, the housing means is further provided on the inner wall surface of the hollow structure and on both side surfaces in the light emitting direction of the solid state light emitting device, and is integrated with the housing means along the longitudinal direction of the housing means. A first support plate to be formed; an inner wall surface of the hollow structure; and a non-light-emitting direction of the solid light emitting element, and a first support plate formed integrally with the casing means along a longitudinal direction of the casing means. 2 support plates, and the support means may be disposed between the first support plate and the second support plate so as to be fitted with the housing means.

  With this configuration, there is an effect that the close contact between the casing means and the support means can be always maintained. This leads to always maintaining the heat dissipation of the lighting device.

  Here, the housing means includes the predetermined region, and includes a first region provided in a non-light-emitting direction of the solid-state light emitting element, and a second region constituting a region other than the first region, The first region may be made of a material having a linear expansion coefficient reduced from that of the second region. Further, the second region may be composed of a flame retardant polycarbonate, and the first region may be composed of a material in which glass fiber or glass powder is mixed in the flame retardant polycarbonate constituting the second region. Good.

  With this configuration, there is an effect that it is possible to reduce the force that causes warping.

  Here, the casing means is further provided on the inner wall surface of the hollow structure and on both side surfaces in the light emitting direction of the solid state light emitting element supported on one surface of the supporting means, and the longitudinal direction of the casing means A third support plate formed integrally with the housing means along the direction, and an inner wall surface of the hollow structure and on both side surfaces of the solid-state light emitting element supported by the other surface of the support means in the light emitting direction. And a fourth support plate formed integrally with the housing means along the longitudinal direction of the housing means, wherein the support means includes the third support plate and the fourth support plate. By being located in between, the housing means may be fitted and arranged.

  With this configuration, even if the lighting device emits light in two directions, it is possible to always maintain the close contact between the casing means and the support means.

  According to the present invention, it is an LED illumination device that can avoid the influence of a straight tube warp, and can be suitably realized as an LED illumination device that is particularly long in the longitudinal direction, and provides a straight tube type LED illumination device. it can.

It is a top view which shows the external appearance of the illuminating device 1 which concerns on Embodiment 1 of this invention. It is the top view of the illuminating device 1 seen from the A1 direction of FIG. It is a top view of the illuminating device 1 seen from the A2 direction of FIG. It is an end view which shows the structure of the A3-A4 surface in FIG. It is an end view which shows the structure of the A5-A6 surface in FIG. FIG. 6 is a diagram for explaining a warp of the housing 3. FIG. 6 is a diagram for explaining slackening of the housing 3. It is a top view which shows the external appearance of the illuminating device 101 which concerns on Embodiment 2 of this invention. It is a top view of the illuminating device 101 seen from B1 direction of FIG. It is an end elevation which shows the structure of the B5-B6 surface in FIG. It is a top view which shows the external appearance of the illuminating device 151 which concerns on Embodiment 3 of this invention. It is the top view of the illuminating device 151 seen from B7 direction of FIG. 10B. It is an end elevation which shows the structure of the B8-B9 surface in FIG. 10C. It is a top view which shows the external appearance of the illuminating device 201 which concerns on Embodiment 4 of this invention. It is a top view of the illuminating device 201 seen from the C1 direction of FIG. It is an end view which shows the structure of the C3-C4 surface in FIG. It is an end elevation which shows the structure of the C5-C6 surface in FIG. It is a top view which shows the external appearance of the illuminating device 301 which concerns on Embodiment 5 of this invention. It is a top view of the illuminating device 301 seen from D1 direction of FIG. It is an end elevation which shows the structure of the D3-D4 surface in FIG. It is an end elevation which shows the structure of D5-D6 surface in FIG. It is a top view which shows the external appearance of the illuminating device 401 which concerns on Embodiment 6 of this invention. It is a top view of the illuminating device 401 seen from E1 direction of FIG. It is an end elevation which shows the structure of the E3-E4 surface in FIG. It is an end elevation which shows the structure of the E5-E6 surface in FIG. It is a top view which shows the external appearance of the illuminating device 501 which concerns on Embodiment 7 of this invention. It is a top view of the illuminating device 501 seen from F1 direction of FIG. It is an end elevation which shows the structure of F3-F4 surface in FIG. It is an end view which shows the structure of F5-F6 surface in FIG. It is a figure explaining the relief | moderation of the curvature of the housing | casing 503. FIG. It is a top view which shows the external appearance of the illuminating device 701 which concerns on Embodiment 8 of this invention. It is a top view of the illuminating device 701 seen from the H1 direction of FIG. It is a top view of the illuminating device 701 seen from the H2 direction of FIG. It is an end elevation which shows the structure of the H3-H4 surface in FIG. It is an end view which shows the structure of the H5-H6 surface in FIG.

(Embodiment 1)
Hereinafter, the illumination device 1 according to Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view showing the appearance of the lighting device 1. FIG. 2 is a plan view of the illumination device 1 as viewed from the direction A1 in FIG. FIG. 3 is a plan view of the illuminating device 1 as viewed from the direction A2 in FIG. 4 is an end view showing the structure of the A3-A4 plane in FIG. 2, and FIG. 5 is an end view showing the structure of the A5-A6 plane in FIG.

  Here, the X direction is a direction along the longitudinal direction of the lighting device 1. The Y direction is assumed to be a direction perpendicular to a straight line connecting the terminals 4a and 4b (a straight line connecting the terminals 4c and 4d). The Z direction is assumed to be a direction parallel to a straight line connecting the terminals 4a and 4b (a straight line connecting the terminals 4c and 4d).

  The lighting device 1 includes a cap 2a, 2b, a housing 3, terminals 4a, 4b, 4c, and 4d (represented as terminals 4 when these need not be particularly identified), elastic bodies 5a and 5b, And a screw 13.

  Further, inside the cap 2a, 2b and the housing 3, there are a support 21, a substrate 22, support blocks 23a and 23b, screws 24, control substrates 25a and 25b, and a solid state light emitting device. 26 are arranged. Support plates 31 a, 31 b, 32 a, and 32 b are provided on the inner wall surface of the housing 3.

  The illuminating device 1 has a shape simulating a straight tube fluorescent lamp, as shown in FIGS. Therefore, when used, it can be lit with an instrument similar to a straight tube fluorescent lamp. In other words, the lighting device 1 can be used for a user in the same manner as a straight tube fluorescent lamp, which is a conventional illumination, and does not make the user feel uncomfortable.

  The caps 2a and 2b are caps configured to seal both ends of the housing 3 that are configured identically. The material may be arbitrary, but in view of weather resistance, insulation, flame retardancy, and the like, the inventors configured the caps 2a and 2b with flame retardant polycarbonate. Of course, the materials constituting the caps 2a and 2b may be arbitrarily selected as necessary.

  The housing 3 needs to be made of a light-transmitting material, but it is sufficient that at least a portion irradiated with light emitted from the solid light emitting element 26 has light-transmitting properties.

  The inventors configured the casing 3 with a flame-retardant polycarbonate having translucency in view of weather resistance, durability, flame retardancy, etc., but in view of the intended use, provided that it has translucency. Optionally, the constituent material may be selected.

  In addition, although it is the said translucency grade, it may be close to transparency and may be colored milky white etc. Making it nearly transparent has an advantage in that the loss of light emitted from the solid state light emitting element 26 can be minimized and taken out of the illumination device 1.

  On the other hand, coloring milky white or the like has an advantage that the directivity of light emitted from the solid light emitting element 26 can be relaxed. That is, there is an advantage that the uniformity of the brightness in the illumination area of the illumination device 1 is improved.

  Based on what has been described above, the degree of translucency of the housing 3 may be set according to the purpose of use of the lighting device 1.

  The housing 3 is provided with support plates 31a, 31b, 32a, and 32b. This is provided to fit and hold the support 21 in the housing 3. This will be described in detail later.

  The terminal 4 is provided on each of the caps 2a and 2b. You may comprise as a shape corresponded to the terminal provided in a straight tube | pipe type fluorescent lamp, and it is good also as another shape. The shape corresponding to the terminal provided in the straight tube fluorescent lamp has an advantage that the lighting device 1 can be used by directly using the socket of the lighting device for the straight tube fluorescent lamp. Moreover, since it becomes impossible to attach to the lighting fixture of a straight tube | pipe type fluorescent lamp, it can be easily prevented that it mixes with a straight tube | pipe type fluorescent lamp (misuse). There is merit in terms.

  The elastic bodies 5a and 5b are configured identically. It is arranged between the caps 2 a and 2 b and the housing 3, and one end is inserted into the caps 2 a and 2 b and the other end is inserted into the housing 3. At the time of this insertion, the caps 2a and 2b, the inner wall surface of the housing 3, and the elastic body 5a are airtight and arranged so as to be in close contact with each other. Moreover, since the caps 2a and 2b, the housing 3, and the elastic bodies 5a and 5b are waterproof, water or the like enters the internal space of the lighting device 1 including the caps 2a and 2b and the housing 3. Can be prevented.

  In addition, about the elastic bodies 5a and 5b, the inventors comprised a flame-retardant rubber material in consideration of safety and the like.

  The screw 13 is used for connection between the cap 2a and the support block 23a, and between the cap 2b and the support block 23b. The screw 13 is an internal space of the lighting device 1 including the caps 2a and 2b and the housing 3. In order to prevent water or the like from invading the material, it is preferable to employ a material with rubber packing. Note that the above connection may be made with a pin other than the screw 13 such as a pin.

  The support 21 supports (holds) the solid light emitting element 26 via the substrate 22, and is disposed in the hollow structure of the housing 3. It plays the role which prescribes | regulates the position of the solid light emitting element 26 in the illuminating device 1. FIG. In addition, it is also used for processing heat generated as a driving loss of the solid state light emitting device 26. Although this heat treatment will be described in detail later, in order to cope with this, it is composed of a material having high thermal conductivity (for example, metal, and the inventors adopt aluminum in consideration of easiness of processing, specific gravity, etc.). To do.

  The substrate 22 is a substrate on which the solid light emitting element 26 is mounted. Similar to the support 21, it is also used for processing heat generated as a driving loss of the solid state light emitting device 26.

  In order to use for heat dissipation, the back surface of the surface on which the solid light emitting element 26 of the substrate 22 is mounted is disposed in close contact with the support 21. By doing so, the heat generated as the driving loss of the solid state light emitting element 26 is efficiently transferred to the support 21 through the substrate 22.

  Here, although it is a material of the board | substrate 22, since it uses for the heat transfer of the heat | fever generate | occur | produced as a drive loss of the solid light emitting element 26 as mentioned above, it is preferable to comprise by a material with high heat conductivity. For example, a metal substrate, an aluminum nitride substrate, an alumina ceramic substrate, or the like is a substrate having high thermal conductivity, and can be said to be suitable for this purpose.

  However, it is clear from the inventors' tests that the substrate 22 is sufficiently usable for this purpose even if it is composed of a glass epoxy substrate, which is a substrate having a lower thermal conductivity than the substrate. It has become. Therefore, you may comprise the board | substrate 22 with a glass epoxy board | substrate. In addition, the use of a glass epoxy substrate has the advantage of leading to cost reduction.

  The support blocks 23a and 23b are configured identically. The support blocks 23 a and 23 b are provided for connection between the caps 2 a and 2 b and the support body 21. The constituent material may be a metal or a resin, but in the case of a resin, it is preferable to use a flame retardant material in view of safety and the like.

  The support blocks 23a, 23b and the support 21 may be connected by any method, but may be fixed by screws 24 as shown in the figure, for example. In addition, you may fix with a pin etc.

  The control boards 25 a and 25 b are electrically connected to the terminal 4 and are also electrically connected to the board 22. Also, a fuse (not shown) or the like is mounted. The fuse or the like is disposed on an electric circuit path connecting the terminal 4a and the substrate 22, for example, and is provided as a countermeasure when there is an abnormality (overcurrent or the like) in the power supplied from the outside of the lighting device 1.

  Further, a rectifier circuit (diode bridge circuit: not shown) may be mounted on the control boards 25a and 25b corresponding to the case where the power supplied from the terminal 4 is AC power. Since the solid state light emitting element 26 is driven by direct current power, mounting the rectifier circuit (not shown) on the control boards 25a and 25b makes it possible to appropriately emit solid state light even if the power supplied from the terminal 4 is alternating current power. The element 26 can be driven.

  The control boards 25a and 25b are disposed in the hollow structure of the caps 2a and 2b. Further, in FIG. 4, the occupied area in the X direction is minimized by arranging along the Y direction (Z direction) as shown. This leads to an increase in the area in which the solid-state light emitting element 26 in the X direction can be arranged, and thus an increase in the illuminable area of the lighting device 1.

  The solid light emitting element 26 is, for example, an LED, and the inventors have adopted a high power LED with an input power of 1 W class in consideration of using the lighting device 1 for lighting purposes. The adopted high power LED is a surface mount type. The area of the electrode is large, and hence the area in contact with the substrate 22 is large, and effective heat dissipation of the heat generated as the driving loss can be realized.

  The illuminating device 1 is comprised by the above components.

  Here, in the lighting device 1, the caps 2 a and 2 b are fixed via the support 21 and the support blocks 23 a and 23 b, but are not fixed to the housing 3.

  This is because the variation of the length of the lighting device 1 in the X direction accompanying the variation of the environmental temperature is minimized. When the housing 3 is made of flame retardant polycarbonate and the support 21 is made of aluminum, the flame retardant polycarbonate and the aluminum are significantly larger when the linear expansion coefficients of the flame retardant polycarbonate and aluminum are compared. Therefore, if the caps 2a and 2b are fixed to the housing 3 instead of the support body 21, the X direction of the lighting device 1 accompanying the change in environmental temperature is based on the linear expansion coefficient of the flame-retardant polycarbonate. Variation of the length will occur.

  As described above, since the linear expansion coefficient of the flame retardant polycarbonate is larger than that of aluminum, the variation in the length of the lighting device 1 in the X direction accompanying the variation in the environmental temperature becomes large. In the worst case, this may lead to the lighting device 1 falling from an appliance (not shown) to which the lighting device 1 is attached.

  On the other hand, as described above, in the lighting device 1 of the present invention, the caps 2a and 2b are fixed via the support 21 and the support blocks 23a and 23b, so that the ambient temperature is based on the linear expansion coefficient of aluminum. A variation in the length of the lighting device 1 in the X direction occurs due to the variation in the amount of the illumination.

  Since the linear expansion coefficient of aluminum is small, the variation in the length of the lighting device 1 in the X direction accompanying the variation in the environmental temperature is small. Therefore, the occurrence of the risk of dropping as described above can be avoided.

  Even when the length of the housing 3 in the X direction varies due to a change in environmental temperature, the airtightness of the internal space formed by the caps 2a and 2b and the housing 3 by the elastic bodies 5a and 5b is as follows. Can be secured. That is, even if the environmental temperature changes, the lighting device 1 functions as a lighting device that exhibits waterproofness.

  In addition to the above, the housing 3 and the support 21 are not fixed. This is because, if they are fixed, they may be damaged due to stress applied to them when the environmental temperature changes due to differences in the linear expansion coefficients of the materials constituting them.

  Below, the thermal radiation mechanism of the illuminating device 1 is demonstrated. In addition, although it is necessary to provide the heat dissipation mechanism in the illuminating device 1, it is for exhibiting the long life property etc. of the solid light emitting element 26. FIG. When the internal junction temperature exceeds a predetermined temperature (which varies depending on the type, for example, 80 degrees), the solid-state light emitting element 26 deteriorates and cannot exhibit excellent performance such as long life. Therefore, it is necessary to provide a heat dissipation mechanism so that the junction temperature of the solid state light emitting element 26 does not exceed the predetermined temperature.

  First, the thermal conductivity of each component used for heat dissipation in the lighting device 1 will be described.

  The housing 3 is generally made of a material having low thermal conductivity, such as flame retardant polycarbonate adopted by the inventors (however, these thermal conductivities are higher than the thermal conductivity of air). However, the wall surface of the housing 3 is thin (1 [mm] or less in the inventors' trial manufacture), and therefore, thermal conductivity can be ensured.

  The support 21 is made of a material having high thermal conductivity (metal: the inventors adopt aluminum), and naturally has high thermal conductivity.

  When the substrate 22 is made of a material having a high thermal conductivity such as a metal, the substrate 22 can naturally have a high thermal conductivity. Further, like the wall surface of the housing 3, the thickness is thin (in the inventors' trial production, 2 [mm] or less). Therefore, even if it is made of a material having low thermal conductivity such as glass epoxy, thermal conductivity can be ensured.

  Here, in the illuminating device 1, the support body 21 and the board | substrate 22 are fixed after adhering arrangement | positioning with an adhesive agent etc. This is to avoid the influence of air having low thermal conductivity as described above, and by adhering and fixing in this way, air is prevented from entering the interface between the support 21 and the substrate 22. .

  On the other hand, it is necessary to make the casing 3 and the support 21 in close contact with each other in order to avoid the influence of air. However, as described above, the casing 3 and the support 21 are fixed with an adhesive or the like. Is not preferred. Therefore, a support plate 31a provided on the inner wall surface of the housing 3 and both side surfaces in the light emitting direction of the solid state light emitting element 26, and formed integrally with the housing 3 along the longitudinal direction (X direction) of the housing 3. 31b, a support plate provided on the inner wall surface of the housing 3 and provided in the non-light-emitting direction of the solid light emitting element 26, and formed integrally with the housing 3 along the longitudinal direction (X direction) of the housing 3 By closely fitting the support body 21 between 32a and 32b, the housing 3 and the support body 21 are in close contact with each other.

  In particular, the shape of the surface of the support body 21 facing the inner wall surface of the housing 3 is made to correspond to the shape of the inner wall surface, thereby realizing a more secure arrangement of the housing 3 and the support body 21. can do.

  Here, preconditions such as power to be applied to the lighting device 1, the size of the lighting device 1, the material of the support 21, the substrate 22, and the housing 3, and how the substrate 22 is fixed to the support 21 (adhesion). Are the same, the heat dissipation performance of the lighting device 1 is determined by the close contact between the housing 3 and the support 21 (that is, the amount of air existing between them).

  This is because the heat transfer rate of heat transferred from the support 21 to the housing 3 decreases as the amount of air existing between the housing 3 and the support 21 increases.

  When the heat transfer rate decreases, the amount of heat staying on the support 21 increases. This is a problem because it leads to an increase in the temperature of the substrate 22 disposed in close contact therewith, and further to an increase in the temperature of the solid light emitting element 26 (its junction temperature) mounted on the substrate 22.

  Thus, as described above, the inventors have fitted and arranged the support 21 between the support plates 31a and 31b and the support plates 32a and 32b.

  As described above, it is possible to realize and maintain the close contact arrangement between the housing 3 and the support 21 over a long period of time. That is, it is possible to realize and maintain the close contact arrangement not only immediately after manufacture of the lighting device 1 but also over a long period of time.

  As a result, the amount of air existing between the housing 3 and the support 21 is reduced as much as possible over the entire use period of the lighting device 1, and the heat transfer rate of heat transferred from the support 21 to the housing 3 is reduced. To prevent. As a result, the occurrence of this problem can be avoided (that is, an excessive temperature rise of the solid state light emitting device 26 (its junction temperature) can be avoided).

  Here, as another method for dealing with the problem of the heat transfer rate, increasing the heat capacity of the support 21 can be cited. By increasing the heat capacity of the support 21, the close arrangement of the housing 3 and the support 21 is released even during the period of use, and the amount of air existing between them increases and stays on the support 21. Even when the amount of heat to be increased, the temperature rise of the support 21 can be reduced, whereby the temperature rise of the solid state light emitting element 26 can also be reduced.

  However, increasing the heat capacity of the support 21 leads to increasing the weight of the support 21. Therefore, unnecessarily increasing the heat capacity of the support 21 leads to an increase in the weight of the support 21, that is, an increase in the weight of the lighting device 1 itself.

  Therefore, it is not always appropriate to deal with this problem by increasing the heat capacity of the support 21.

  On the other hand, as described above, the heat dissipation mechanism provided in the lighting device 1 avoids the occurrence of this problem and does not require a large heat capacity. Therefore, it has been confirmed that the desired heat radiation performance can be obtained even if the support 21 is lightened (that is, the heat capacity of the support 21 is reduced).

  Although it is possible to arrange the substrate 22 in close contact with the housing 3 without using the support 21, the support 21 can be used in the lighting device 1 even if the heat capacity is reduced (weight reduction) as described above. It plays a certain role in the heat dissipation mechanism.

  Therefore, even if the substrate 22 is disposed in close contact with the housing 3, it is necessary to configure the substrate 22 as including the structure of the support 21. Otherwise, problems such as a temperature rise that adversely affects the solid state light emitting device 26 occur.

  Here, when the length of the lighting device 1 in the longitudinal direction (X direction) is long, the length of the casing 3 in the longitudinal direction is naturally long. Therefore, there exists a problem that the housing | casing 3 tends to warp. The inventors have adopted polycarbonate as a material constituting the housing 3 as described above, but there is a tendency that the material tends to warp as the length increases.

  In particular, in the lighting device 1, the heat dissipation mechanism is configured by bringing the support 21 into close contact with a part of the inner wall surface of the housing 3. That is, the housing 3 is locally heated, and there is a concern that warping may occur based on the fact that only the heated portion is stretched.

  Here, in the illuminating device 1, the support body 21 is fitted and arranged inside the housing 3 by the support plates 31a, 31b, 32a, and 32b. This is not only the maintenance of the heat dissipation of the lighting device 1 over the entire use period due to the fact that the close arrangement of the casing 3 and the support 21 can be realized and maintained over the long period of time described above, but also the casing 3. There is also an effect of correcting the sled.

  However, based on what has been described above, reducing the weight of the support 21 leads to lowering its rigidity. When the rigidity of the support body 21 is lowered, the ability to correct the warp of the housing 3 is lowered, and the support body 21 is fitted inside the housing 3 by the support plates 31a, 31b, 32a, and 32b. Even in the case where they are arranged together, it is conceivable that warping of the housing 3 (that is, warping of the lighting device 1 itself) may occur.

  Here, the close-contact arrangement of the housing 3 and the support 21 is achieved by arranging the support 21 in the housing 3 using the support plates 31a, 31b, 32a, and 32b, so that illumination can be achieved. Even if warpage occurs in the device 1 itself, it is maintained. Therefore, even if the lighting device 1 itself is warped as described above, the heat dissipation of the lighting device 1 does not deteriorate.

  However, the occurrence of warpage in the lighting device 1 causes another problem. This another problem is that the aesthetic appearance of the lighting device 1 is impaired, and thus the convenience of the user is impaired. Therefore, it should be avoided that the lighting device 1 is warped.

  One method of dealing with the problem of warping is to selectively set a portion of the inner wall surface of the housing 3 that is in close contact with the support 21. FIG. 6 and FIG. 7 are diagrams for explaining this, and FIG. 6 shows a case where only one direction of the housing 3 is heated (the portion in close contact with the support 21 is only in one direction of the housing 3). If there is).

  FIG. 7 shows the case where both side surfaces are heated symmetrically with respect to the central axis of the housing 3 (see FIG. 7B) (the region of the inner wall surface of the housing 3 in close contact with the support 21 is the housing 3 is a case in which both side surfaces are symmetric with respect to the central axis 3, and the illumination device 1 of the present invention is configured in this manner.

  First, in the case of FIG. 6, as shown in FIGS. 6 (a) and 6 (b), only one direction is heated. In this case, only the downward direction of the drawing is heated.

  The heated portion extends according to the linear expansion coefficient of the material constituting the casing 3 (the inventors adopt flame-retardant polycarbonate). On the other hand, the portion that cannot be heated naturally does not stretch. Based on this, as shown in FIG. 6 (b), a force acts to generate warpage downward in the drawing. As a result, as shown in FIG.

  Next, in the case of FIG. 7 (in the case of the lighting device 1 of the present invention), both side surfaces are heated symmetrically with respect to the central axis of the housing 3 as shown in FIGS. 7 (a) and 7 (b). In this case, the horizontal direction in FIG. 7B is heated.

  As a result, as shown in FIG. 7B, a force that causes warping in the left direction of the drawing acts on the high temperature region 71a, and the high temperature region 71b tries to generate warping in the right direction of the drawing. The power to do works. That is, the forces for generating these warpages are in opposite directions and are cancelled. Therefore, as shown in FIG. 7C, in this case, the case 3 hardly warps.

  As shown in FIG. 7, since the high temperature regions 71a and 71b are not on the horizontal central axis of the housing 3 (see FIG. 7B), strictly, the force for generating warpage is In the high temperature region 71a, the lower left direction is the drawing, and in the high temperature region 71b, the lower right direction is the drawing. Therefore, although it does not become the reverse direction completely, since the considerable part of the force which is going to generate | occur | produce those curvature is canceled, generation | occurrence | production of a curvature can be suppressed.

  Thus, by suppressing the warp generated in the housing 3, it is possible to avoid the influence of the decrease in rigidity accompanying the weight reduction of the support 21, and as a result, the length of the lighting device 1 in the longitudinal direction (X direction). Even when the length is long, warping that occurs in the lighting device 1 can be suppressed.

  Furthermore, as shown in FIG. 5, the support 21 in the lighting device 1 has an end surface (cross section) that is substantially H-shaped. Thereby, even if weight reduction of the support body 21 is aimed at, the fall of rigidity can be suppressed. That is, the warp generated in the lighting device 1 can also be suppressed by this.

  Combined with the above effects, warping of the lighting device 1 itself is suppressed.

  Here, Patent Document 1 discloses a waterproof illumination device that is a straight tube type LED illumination device.

  In this waterproof illuminating device, heat generated as a loss from the LED inserted in the straight tube-type transparent cylindrical portion can be radiated by the heat radiating plate provided.

  However, it is considered that the waterproof illumination device disclosed in Patent Document 1 is difficult to realize as an LED illumination device that is long in the longitudinal direction.

  For this reason, when the length of the waterproof lighting device disclosed in Patent Document 1 is long, the cylindrical portion corresponding to the straight pipe is naturally long. In this case, it becomes easy to warp based on the cylindrical portion becoming longer. Here, the waterproof illumination device disclosed in Patent Document 1 does not suggest a response to this warp. Therefore, when the warp occurs, the state where the warp occurs becomes the appearance of the waterproof illumination device. This may impair the aesthetic appearance and thus impair user convenience. Therefore, the waterproof illumination device disclosed in Patent Document 1 is difficult to realize as an LED illumination device that is long in the longitudinal direction.

  On the other hand, in the illuminating device 1 of this invention, the support body 21 is fitted and arrange | positioned inside the housing | casing 3 by support plate 31a, 31b, 32a, 32b. This not only maintains the heat dissipation of the lighting device 1 over the entire period of use due to the fact that it is possible to realize and maintain the close contact arrangement between the housing 3 and the support 21 over a long period of time, but also to warp the housing 3. There is also an effect of correcting.

  In addition, the effect of correcting the warp of the housing 3 may decrease because the rigidity of the support 21 decreases as the weight of the support 21 is reduced. However, as shown in FIG. 5, the support body 21 is configured to have a substantially H-shaped end surface (cross section), so that a reduction in rigidity can be suppressed even if the weight is reduced.

  Further, the portion where the housing 3 and the support 21 are arranged in close contact with each other is configured to be symmetric with respect to the central axis of the housing 3 (see FIG. 7B). With such a configuration, as shown in FIG. 7B, a force that causes warping in the left direction of the drawing works in the high temperature region 71a, and warping in the right direction of the drawing occurs in the high temperature region 71b. Power to try to work.

  That is, the forces for generating these warpages are in opposite directions and are cancelled. Therefore, as shown in FIG. 7C, in this case, the case 3 hardly warps.

  With the configuration as described above, in the lighting device 1 of the present invention, the occurrence of warpage can be suppressed even when the length in the longitudinal direction (X direction) of the lighting device 1 is long, and the appearance is not good. And the convenience of the user is not impaired.

(Embodiment 2)
Hereinafter, the illumination device 101 according to Embodiment 2 of the present invention will be described in detail with reference to the drawings.

  FIG. 8 is a plan view showing the appearance of the illumination device 101. FIG. 9 is a plan view of the illumination device 101 viewed from the B1 direction in FIG. FIG. 10A is an end view showing the structure of the B5-B6 plane in FIG.

  The lighting device 101 is different from the lighting device 1 only in that the housing 3 is changed to the housing 103. About another component, the code | symbol same as the illuminating device 1 is attached | subjected, and description is abbreviate | omitted.

  The housing 103 is provided with support plates 131 a and 131 b instead of the support plates 31 a and 31 b provided in the housing 3.

  Like the support plates 31a and 31b, the support plates 131a and 131b are also provided on the inner wall surface of the housing 103 and on both side surfaces in the light emitting direction of the solid light emitting element 26, and in the longitudinal direction (X direction) of the housing 103. Along with this, it is formed integrally with the housing 103.

  Then, the support body 21 is fitted and disposed between the support plates 32a and 32b, thereby realizing the close contact arrangement between the housing 103 and the support body 21.

  Further, the support plates 131a and 131b are provided with steps so that the substrate 22 can be fitted and disposed between the support plates 32a and 32b via the support 21.

  By thus fitting and arranging the substrate 22, it is possible to prevent the substrate 22 from being lifted (peeled) from the support 21.

  Here, the support 21 and the substrate 22 are fixed in close contact with an adhesive or the like. Therefore, normally, the substrate 22 is not lifted from the support 21. Therefore, although the fitting arrangement of the substrate 22 by the support plates 131a and 131b is provided in case of an emergency, even if the substrate 22 is lifted from the support body 21 by such a configuration, illumination is also possible. There exists an effect that the heat dissipation of the apparatus 101 can be maintained.

(Embodiment 3)
Hereinafter, the illumination device 151 according to Embodiment 3 of the present invention will be described in detail with reference to the drawings.

  FIG. 10B is a plan view showing the appearance of the lighting device 151. FIG. 10C is a plan view of the illumination device 151 viewed from the B7 direction in FIG. 10B. FIG. 10D is an end view showing the structure on the B8-B9 plane in FIG. 10C.

  The lighting device 151 is different from the lighting device 1 only in that the housing 3 is changed to the housing 153. About another component, the code | symbol same as the illuminating device 1 is attached | subjected, and description is abbreviate | omitted.

  The housing 153 is provided with substrate support plates 161a and 161b in addition to the support plates 31a, 31b, 32a and 32b.

  Similarly to the support plates 31a and 31b, the substrate support plates 161a and 161b are also provided on the inner wall surface of the housing 153 and on both side surfaces in the light emitting direction of the solid light emitting element 26, and the longitudinal direction (X direction) of the housing 153. Are formed integrally with the housing 153.

  The substrate support plates 161a and 161b serve to fit and arrange the substrate 22 between the support plates 32a and 32b via the support 21.

  Therefore, the illumination device 151 using the housing 153 provided with the substrate support plates 161a and 161b can maintain the heat dissipation even when the substrate 22 is lifted from the support body 21 as in the illumination device 101. There is an effect.

  Here, the following is mentioned as another method of using the substrate support plates 161a and 161b.

  Another utilization method is to use the substrate support plates 161a and 161b as a reflective material for the light emitted from the solid state light emitting device 26. As described above, by using the substrate support plates 161a and 161b as the reflecting material, it is possible to suppress the spread of the light emitted from the solid light emitting element 26.

  Therefore, when the illumination device 151 is used as illumination that suppresses the spread of light, there is an advantage in using the substrate support plates 161a and 161b as reflecting materials as described above.

  In addition, when using the board | substrate support plates 161a and 161b as a reflecting material, it is necessary to raise the reflectance of those surfaces. This can be achieved, for example, by coloring the substrate support plates 161a and 161b white or by aluminum coating.

(Embodiment 4)
Hereinafter, the illumination device 201 according to Embodiment 4 of the present invention will be described in detail with reference to the drawings.

  FIG. 11 is a plan view showing the appearance of the lighting device 201. FIG. 12 is a plan view showing an appearance of the illumination device 201 viewed from the direction C1 in FIG. FIG. 13 is an end view showing the structure on the C5-C6 plane in FIG.

  The lighting device 201 is different from the lighting device 1 in that the housing 3 is the housing 203, the support 21 is the support 221, the substrate 22 is the substrates 222a and 222b, the support blocks 23a and 23b are the support blocks 223a, The screw 24 is changed to the screw 224 at 223b. Other components are denoted by the same reference numerals as those of the lighting device 1 and description thereof is omitted.

  The housing 203 is provided with support plates 231a, 231b, 232a, and 232b. The support plates 231a and 231b are provided on the inner wall surface of the housing 203 and on both side surfaces in the light emitting direction of the solid-state light emitting element 26 mounted on the substrate 222a, and the housing plates along the longitudinal direction (X direction) of the housing 203. 203 is formed integrally.

  The support plates 232a and 232b are provided on the inner wall surface of the housing 203 and on both sides in the light emitting direction of the solid state light emitting device 26 mounted on the substrate 222b, and extend along the longitudinal direction (X direction) of the housing 203. It is formed integrally with the housing 203.

  The support body 221 is fitted and disposed between the support plates 231a and 231b configured as described above and the support plates 232a and 232b.

  The support body 221 is obtained by changing the support body 21 in order to change the light emitting direction of the lighting device 201 into two directions, and the material and the like are the same as those of the support body 21.

  Similarly, for the change of the substrates 222a and 222b, the support blocks 223a and 223b, and the screws 224, the substrate 22, the support blocks 23a and 23b, and the screws 24 were changed in order to change the light emitting direction of the lighting device 201 to two directions. The material is the same as before the change.

  The lighting device 201 configured as described above has two light emission directions. Further, like the lighting device 1, a support body 221 is fitted and disposed inside the housing 203 by support plates 231 a, 231 b, 232 a, and 232 b. This not only maintains the heat dissipating property of the lighting device 201 over the entire period of use due to the fact that the close contact arrangement between the housing 203 and the support 221 can be realized and maintained over a long period of time, but also warps the housing 203. There is also an effect of correcting.

  In addition, the effect of correcting the warp of the housing 203 may be reduced because the rigidity of the support body 221 is reduced as the support body 221 is reduced in weight. However, as shown in FIG. 14, the support body 221 is configured to have an approximately H-shaped end surface (cross section), so that a reduction in rigidity can be suppressed even if the weight is reduced.

  Further, the portion where the housing 203 and the support 221 are arranged in close contact with each other is configured to be symmetric with respect to the central axis of the housing 203 (see FIG. 14).

  FIG. 14 is based on the fact that the vicinity of the support plates 231a and 232a is heated by such a configuration, based on the force to generate the warp in the left direction in FIG. 14 and the vicinity of the support plates 231b and 232b. The forces to generate warpage in the right direction in FIG. 14 are in opposite directions and are cancelled. Therefore, almost no warpage occurs in the housing 203.

  With the configuration as described above, in the lighting device 201 of the present invention, as with the lighting device 1, the occurrence of warpage can be suppressed even when the length of the lighting device 1 in the longitudinal direction (X direction) is long. There is no loss of the above aesthetics or user convenience.

(Embodiment 5)
Hereinafter, the illumination device 301 according to Embodiment 5 of the present invention will be described in detail with reference to the drawings.

  FIG. 15 is a plan view showing the appearance of the lighting device 301. FIG. 16 is a plan view of the lighting device 301 viewed from the direction D1 in FIG. FIG. 17 is an end view showing the structure of the D3-D4 plane in FIG. 18 is an end view showing the structure of the D5-D6 plane in FIG.

  The lighting device 301 is different from the lighting device 1 only in that the housing 3 is changed to the housing 303. About another component, the code | symbol same as the illuminating device 1 is attached | subjected, and description is abbreviate | omitted.

  The mixing part 303b is provided in the non-light-emitting direction of the solid state light emitting device 26, and includes a region where the support 21 is disposed in close contact with the inner wall surface. On the other hand, the normal portion 303 a is a region other than that and includes the light emitting direction of the solid state light emitting element 26.

  Here, the linear expansion coefficient of the mixing part 303b is smaller than the linear expansion coefficient of the normal part 303a. By reducing the linear expansion coefficient of the mixing part 303b, the elongation due to the heat transferred from the support 21 is reduced. Therefore, it is possible to reduce the force for generating the warp of the mixing unit 303b based on the effect, and thus it is possible to suppress the warp of the housing 303.

  In addition, reducing the linear expansion coefficient of the mixing part 303b as compared with the normal part 303a is, for example, a flame-retardant polycarbonate constituting the normal part 303a (this is the same as the material constituting the housing 3). Furthermore, it can be realized by configuring the mixing portion 303b with a material mixed with glass powder, glass fiber, or the like. In the case where glass fibers are mixed, by setting the glass content to 10 [%], the linear expansion coefficient can be reduced by about 40 [%] compared to the case where glass fibers are not mixed.

  Of course, the linear expansion coefficient of the mixing part 303b may be made smaller than the linear expansion coefficient of the normal part 303a by other methods.

  Here, mixing glass fiber not only in the mixing part 303b but also in the normal part 303a (that is, the entire housing 303 is made of flame-retardant polycarbonate mixed with glass fiber) makes it easy to manufacture. At first glance, it seems to be effective in terms of reducing manufacturing costs.

  However, the translucency is reduced by mixing glass fiber or the like. Therefore, it is not appropriate that the flame-retardant polycarbonate mixed with the glass fiber or the like is disposed on the path of light emitted from the solid light emitting element 26.

  On the other hand, the mixing portion 303b does not correspond to the path of light emitted from the solid state light emitting element 26, and a decrease in translucency due to mixing of glass fibers or the like does not cause a problem. Therefore, as in the case 303 of the present lighting device 301, the normal portion 303a serving as a path of light emitted from the solid state light emitting element 26 is not mixed with glass fiber (that is, by a normal flame-retardant polycarbonate). For the mixing part 303b, it is effective to mix glass fiber and reduce its linear expansion coefficient.

  Moreover, the normal part 303a and the mixing part 303b can be formed integrally. Therefore, even if the entire housing 303 is made of flame retardant polycarbonate mixed with glass fibers, there is no great difference in manufacturing cost.

  Based on what has been described above, warping of the housing 303 can be suppressed. Accordingly, the lighting device 301 can suppress the occurrence of warpage even when the length in the longitudinal direction (X direction) is long, and it may impair the appearance of the appearance and the convenience of the user. do not do.

(Embodiment 6)
Hereinafter, the illumination device 401 according to Embodiment 6 of the present invention will be described in detail with reference to the drawings.

  FIG. 19 is a plan view showing the appearance of the lighting device 401. FIG. 20 is a plan view of the lighting device 401 viewed from the direction E1 in FIG. FIG. 21 is an end view showing the structure of the E3-E4 plane in FIG. 22 is an end view showing the structure of the E5-E6 plane in FIG.

  The lighting device 401 is different from the lighting device 1 only in that the housing 3 is changed to the housing 403. About another component, the code | symbol same as the illuminating device 1 is attached | subjected, and description is abbreviate | omitted.

  The housing 403 is provided with an internal housing 411 with respect to the housing 3. The internal housing 411 is formed integrally with the housing 403 and is formed on the light emitting direction side of the solid state light emitting element 26 along the longitudinal direction (X direction) of the housing 403.

  The internal housing 411 is provided to increase the rigidity of the housing 403. In other words, the presence of the internal housing 411 can further suppress the occurrence of warpage when the length in the longitudinal direction (X direction) is long, and exhibits the effect of further improving the convenience for the user. .

  Note that the internal casing 411 configured in an arch shape as shown in FIG. 22 is effective in improving the resistance of the casing 403 to a force that causes warping downward in FIG. is there.

  Further, since the inner casing 411 exists on the path of light emitted from the solid state light emitting element 26, it is necessary to have translucency. For example, by configuring as substantially transparent, it is possible to reduce the influence on the light emitted from the solid state light emitting device 26.

  With the configuration as described above, in the lighting device 401 of the present invention, the occurrence of warpage can be suppressed even when the length of the lighting device 401 in the longitudinal direction (X direction) is long, and the appearance is not good. And the convenience of the user is not impaired.

  Note that, as described with reference to FIG. 6, the case 403 suppresses warpage generated compared to the case 3 due to an increase in rigidity due to the presence of the internal case 411 even when only one direction is heated. I have also confirmed that I can do it.

(Embodiment 7)
Hereinafter, the illumination device 501 according to Embodiment 7 of the present invention will be described in detail with reference to the drawings.

  FIG. 23 is a plan view showing the appearance of the illumination device 501. FIG. FIG. 24 is a plan view of the illumination device 501 viewed from the F1 direction in FIG. FIG. 25 is an end view showing the structure of the F3-F4 plane in FIG. FIG. 26 is an end view showing the structure of the F5-F6 plane in FIG.

  The illumination device 501 is different from the illumination device 1 only in that the housing 3 is changed to the housing 503. Other components are denoted by the same reference numerals as those of the lighting device 1 and description thereof is omitted.

  The housing 503 is provided with an internal housing 511 with respect to the housing 3. The internal casing 511 is formed integrally with the casing 503, and is formed in the non-light emitting direction of the solid state light emitting element 26 along the longitudinal direction (X direction) of the casing 503 (the point formed in the non-light emitting direction). And different from the internal housing 411).

  The internal casing 511 is provided to increase the rigidity of the casing 503. In this respect, it has a function similar to that of the internal housing 411, and its presence can further suppress warpage when the length in the longitudinal direction (X direction) is long.

  With the configuration as described above, in the lighting device 501 of the present invention, the occurrence of warpage can be suppressed even when the length of the lighting device 501 in the longitudinal direction (X direction) is long, and the aesthetic appearance is impaired. And the convenience of the user is not impaired.

  Note that the internal housing 511 has a function of suppressing warpage even when one direction of the housing 503 including the internal housing 511 is heated, as shown in FIGS. 27 (a) and 27 (b). Have

  That is, due to the extension of the outer peripheral portion 562 in the high temperature region 561 based on the presence of the high temperature region 561, due to the force of generating warpage downward in FIG. 27B, and the extension of the internal housing 511 in the high temperature region 561. The force that causes warping in the upward direction in FIG. 27B is reversed and canceled. Therefore, as shown in FIG. 27C, even when one direction of the housing 503 including the internal housing 511 is heated, the housing 503 is hardly warped.

(Embodiment 8)
Hereinafter, the illumination device 701 according to Embodiment 8 of the present invention will be described in detail with reference to the drawings.

  FIG. 28 is a plan view showing the appearance of the illumination device 701. FIG. FIG. 29 is a plan view of the illumination device 701 viewed from the H1 direction in FIG. FIG. 30 is a plan view of the illumination device 701 viewed from the H2 direction in FIG. FIG. 31 is an end view showing the structure on the H3-H4 plane in FIG. FIG. 32 is an end view showing the structure of the H5-H6 plane in FIG.

  The illumination device 701 is different from the illumination device 1 only in that a reinforced housing 711 is added. About another component, the code | symbol same as the illuminating device 1 is attached | subjected, and description is abbreviate | omitted.

  The reinforced casing 711 is made of a material having high rigidity, for example, metal (the inventors adopt stainless steel), and does not interfere with the path of light emitted from the solid state light emitting element 26. It is attached.

  Since the strengthened casing 711 has a high rigidity as described above, even if a warp is generated in the casing 3 (the lighting device 1), the warp can be corrected.

  Therefore, in the illuminating device 701 of the present invention, even when the length of the illuminating device 701 in the longitudinal direction (X direction) is long, the occurrence of warpage can be suppressed, and the appearance of the aesthetic device can be impaired. No loss of convenience.

  In addition, when the reinforced housing 711 is made of metal, the metal is exposed to the outside. This seems to be undesirable at first glance from the viewpoint of safety such as the possibility of electric shock.

  However, the housing 3 is an insulator (as described above, the inventors adopt flame retardant polycarbonate), and the reinforced housing 711 is attached through the housing 3, so that there is no problem in safety.

  The lighting devices 1, 101, 151, 201, 301, 401, 501, and 701 of the present invention are not limited to the above-described embodiments, and can be freely modified without departing from the spirit of the present invention. Can be implemented.

  For example, the reinforced housing 711 may be attached to the lighting devices 101, 151, and the like. It is also effective to make the support plates 231a, 231b, 232a, 232b have shapes corresponding to the support plates 131a, 131b. The support body 221 and the substrates 222a and 222b are fitted between the support plates 231a and 231b having a shape corresponding to the support plates 131a and 131b and the support plates 232a and 232b, thereby supporting the substrates 222a and 222b. Lifting from the body 221 can be prevented.

  In addition, the thickness of the portion of the housing 3 or the like where the inner wall surface is closely contacted with the support 21 or the like may be made thinner than the thickness of the portion where the close contact is not placed. It is effective to suppress the occurrence.

  Since the thickness of the portion arranged in close contact with the support 21 or the like is thin, the force for generating warpage due to the extension of the portion is relatively weak, and the portion in which the close arrangement with high rigidity is not made (that is, The occurrence of warpage is suppressed by the presence of a portion where the force to generate warpage does not work.

  Moreover, dividing the casing 3 and the like into a plurality of parts in the longitudinal direction (X direction) is also effective in terms of suppressing the occurrence of warping of the lighting device 1 and the like. This is because the length of each divided individual in the X direction is shortened, so that the occurrence of warpage is suppressed.

  In addition, when each divided | segmented individual | organism | solid is connected with a connector (not shown) which has a softness | flexibility, and also when making the illuminating device 1 etc. waterproof, water etc. are from the part connected by the said connector. Must be configured to prevent intrusion.

  The present invention can be applied to an illuminating device, and particularly applicable to an illuminating device using a solid light emitting element such as an LED as a light source.

1, 101, 151, 201, 301, 401, 501, 701 Illuminator 2a, 2b Cap 3, 103, 153, 203, 303, 403, 503, Case 4, 4a, 4b, 4c, 4d Terminal 5a, 5b Elastic body 13, 24, 224 Screw 21, 221 Support body 22, 222a, 222b Substrate 23a, 23b, 223a, 223b Support block 25a, 25b Control board 26 Solid state light emitting device 31a, 31b, 32a, 32b, 131a, 131b, 231a 231b, 232a, 232b, 331a, 331b, 332a, 332b Support plate 61, 71a, 71b, 561 High temperature region 161a, 161b Substrate support plate 303a Normal part 303b Mixing part 411, 511 Internal casing 562 Outer part 711 Reinforced casing

Claims (5)

  1. A lighting device using a solid state light emitting device,
    A supporting means for supporting the solid-state light emitting device;
    The support means is disposed in a hollow structure along the longitudinal direction, and includes housing means having translucency at least in the light emitting direction of the solid state light emitting device,
    The support means and the predetermined region of the inner wall surface of the hollow structure are arranged in close contact with each other,
    The illuminating device according to claim 1, wherein the predetermined region is located on both side surfaces symmetrical to a central axis of the arbitrary end surface at an arbitrary end surface perpendicular to the longitudinal direction of the housing means.
  2. The housing means further includes
    A first support plate provided on the inner wall surface of the hollow structure and on both side surfaces in the light emitting direction of the solid state light emitting device, and formed integrally with the casing means along the longitudinal direction of the casing means;
    An inner wall surface of the hollow structure and provided in a non-light-emitting direction of the solid state light emitting device, and a second support plate formed integrally with the casing means along the longitudinal direction of the casing means,
    The support means is
    The lighting device according to claim 1, wherein the lighting device is disposed between the first support plate and the second support plate so as to be fitted with the housing means.
  3. The housing means includes
    A first region including the predetermined region and provided in a non-light-emitting direction of the solid-state light emitting element;
    A second region constituting a region other than the first region, and
    The lighting device according to claim 1, wherein the first region is made of a material having a linear expansion coefficient reduced from that of the second region.
  4. The second region is composed of flame retardant polycarbonate,
    The lighting device according to claim 3, wherein the first region is made of a material in which glass fiber or glass powder is mixed into a flame-retardant polycarbonate constituting the second region.
  5. The housing means further includes
    Provided on the inner wall surface of the hollow structure and on both sides in the light emitting direction of the solid state light emitting device supported on one surface of the supporting means, and integrally with the casing means along the longitudinal direction of the casing means A third support plate to be formed;
    Provided on both sides of the light emitting direction of the solid state light emitting device supported by the inner wall surface of the hollow structure and the other surface of the supporting means, and integrated with the housing means along the longitudinal direction of the housing means A fourth support plate formed,
    The support means is
    The lighting device according to claim 1, wherein the lighting device is disposed between the third support plate and the fourth support plate so as to be fitted with the housing means.
JP2009009290A 2009-01-19 2009-01-19 Illuminating device Granted JP2010165647A (en)

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Cited By (25)

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JP2011044306A (en) * 2009-08-20 2011-03-03 Koha Co Ltd Fluorescent lamp type illumination device
JP2011519146A (en) * 2009-05-10 2011-06-30 ツージャン セテック ライティング カンパニー リミテッドZhejiang Setec Lighting Co.,Ltd. LED straight tube light
JP2012074164A (en) * 2010-09-27 2012-04-12 Toshiba Lighting & Technology Corp Fluorescent lamp type led lamp and lighting system
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