JP2015220132A - Diffusion cover, lighting lamp, lighting device, and manufacturing method of diffusion cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diffusion cover with improved heat radiation performance, and to provide a lighting lamp using the diffusion cover, a lighting device, and a manufacturing method of the diffusion cover.SOLUTION: A diffusion cover 2 includes: a light permeable cover body 3 in which a light emitting part 11 is stored; and a diffusion film 4 which is provided at the cover body 3 and diffuses light emitted from the light emitting part 11, the diffusion film 4 in which irregularities 5a are formed on a surface.

Description

  The present invention relates to a diffusion cover for diffusing light, an illumination lamp using the same, an illumination device, and a method for manufacturing the diffusion cover.

  In an illumination lamp using a solid light-emitting element such as an LED as a light source, various heat dissipation techniques have been proposed in the past in order to release heat generated from the light source, for example. Patent Document 1 discloses an LED lamp including a substrate having a plurality of LED elements on the surface, and a glass tube in which the substrate is housed and whose outer surface or inner surface is diffusion-treated. In Patent Document 1, light emitted from an LED element is diffused when passing through a diffusion-treated glass tube, and emitted to the outside of the LED lamp. Thereby, diffused light is irradiated to the room etc. in which the LED lamp was attached.

JP2011-138681A (pages 4 to 5)

  As described above, the LED lamp disclosed in Patent Document 1 includes a light-emitting unit including a light source in a glass tube in order to protect the light source and diffuse light emitted from the light source. However, since the glass tube has a low thermal conductivity K (W / m · K), heat generated from the light source of the LED lamp is difficult to be released. Further, not only glass tubes but also tubes made of resin have poor heat dissipation.

  The present invention has been made against the background described above, and provides a diffusion cover with improved heat dissipation, an illumination lamp using the same, an illumination device, and a method for manufacturing the diffusion cover.

  A diffusion cover according to the present invention includes a light-transmitting cover main body in which a light emitting unit is accommodated, a diffusion film provided on the cover main body, diffusing light emitted from the light emitting unit, and having unevenness formed on the surface, It is characterized by having.

  According to the present invention, since the irregularities are formed on the surface of the diffusion film, the heat dissipation can be improved.

1 is a perspective view showing an illumination lamp 1 according to Embodiment 1. FIG. 1 is a front sectional view showing an illumination lamp 1 according to Embodiment 1. FIG. 1 is a side view showing an illumination lamp 1 according to Embodiment 1. FIG. 1 is a side sectional view showing an illumination lamp 1 according to Embodiment 1. FIG. It is front sectional drawing which shows the illumination lamp 100 which concerns on a 1st modification. It is side surface sectional drawing which shows the illumination lamp 200 which concerns on a 2nd modification. It is side surface sectional drawing which shows the illumination lamp 300 which concerns on a 3rd modification. It is side surface sectional drawing which shows the illumination lamp 400 which concerns on a 4th modification. 1 is a perspective view showing a lighting device 30 according to Embodiment 1. FIG. It is a front view which shows the illumination lamp 500 which concerns on Embodiment 2. FIG. It is a front view which shows the illuminating device 530 which concerns on Embodiment 2. FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a diffusion cover, an illumination lamp, an illumination device, and a method for manufacturing a diffusion cover according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an illumination lamp 1 according to Embodiment 1. FIG. The illumination lamp 1 will be described with reference to FIG. As shown in FIG. 1, the illumination lamp 1 includes a light source module 10, a power supply base 13, a ground base 14, and a diffusion cover 2.

(Light source module 10)
2 is a front cross-sectional view showing the illumination lamp 1 according to Embodiment 1, and is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 2, the light source module 10 includes a light emitting unit 11 and a heat sink 12 on which the light emitting unit 11 is installed. The light emitting unit 11 includes, for example, a plurality of LEDs 11 a and a wiring pattern (see FIG. And a substrate 11b on which the LED 11a is mounted.

(LED11a)
In this Embodiment 1, the case where a light emitting element is LED11a is demonstrated. As described above, the LEDs 11a are mounted on the substrate 11b, and are arranged in a straight line, for example, on the surface of the substrate 11b. A light source circuit is formed by connecting the LED 11a and a wiring pattern provided on one surface of the substrate 11b. As the LED 11a, for example, a pseudo white LED packaged by providing a phosphor that converts blue light into yellow light on an LED chip that emits blue light having a wavelength of about 440 nm to 480 nm can be used.

  In addition, you may use COB (Chip On Board) etc. with which the LED chip was directly mounted in the board | substrate 11b. In addition, the number, arrangement, or type of the LEDs 11a can be appropriately changed according to the use of the illumination lamp 1 or the like. Furthermore, instead of the LED 11a, a light emitting element (device) such as an LD (laser diode) or an organic EL can be used. When an organic EL or the like is used as the light emitting element, instead of mounting a plurality of light emitting elements on the substrate 11b, a single plate-like light emitting element extending in the longitudinal direction may be mounted on the substrate 11b. .

(Substrate 11b)
The board | substrate 11b is a member extended in the longitudinal direction (arrow Y direction), for example. As described above, a plurality of LEDs 11a are mounted on the substrate 11b along the longitudinal direction (arrow Y direction). In addition, a lighting circuit element (not shown) made of a diode, a fuse, a resistor, or the like for lighting the LED 11a is mounted on the substrate 11b. And the board | substrate 11b is electrically connected with the electric power feeding terminal 13a of the electric power feeding base 13 in the end, and the lighting circuit element of the board | substrate 11b is electrically fed via the electric power feeding terminal 13a from an external power supply. Thereby, LED11a lights.

  As a material of the substrate 11b, a glass epoxy material, a paper phenol material, a composite material, or a metal material such as aluminum (Al) is selected and used in consideration of component arrangement, heat dissipation, and material cost. The thickness of the substrate 11b is, for example, about 1 mm, but may be thicker or thinner than 1 mm. In addition, in order to improve the utilization efficiency of the light emitted from the LED 11a, a reflective material may be formed on the surface of the substrate 11b by using a method such as coating, printing, or vapor deposition. In this case, the use efficiency of light can be further improved by forming a reflective material on the surface of the substrate 11b on which the LED 11a is mounted.

(Heat sink 12)
The heat sink 12 is a member extending in the longitudinal direction (arrow Y direction), for example, and is a heat conducting member having thermal conductivity. The heat sink 12 includes a flat portion 12 a and an arc portion 12 b, and the light emitting unit 11 is installed on the flat portion 12 a of the heat sink 12. Specifically, the longitudinal direction (arrow Y direction) of the substrate 11 b of the light emitting unit 11 is placed parallel to the longitudinal direction (arrow Y direction) of the flat portion 12 a of the heat sink 12.

  The heat sink 12 is bonded to the cylindrical diffusion cover 2 using, for example, an adhesive 12c, and the portion of the heat sink 12 bonded to the diffusion cover 2 is a circle along the inner wall of the diffusion cover 2. It is an arcuate arc portion 12b. In this way, the heat sink 12 connects the substrate 11b of the light emitting unit 11 and the diffusion cover 2, so that the heat sink 12 transmits operating heat generated from the LED 11a to the diffusion cover 2 for illumination. Heat is radiated outside the lamp 1.

  In addition, the heat sink 12 is provided with the rigidity required to support the longitudinal direction (arrow Y direction) of the illumination lamp 1, and it is preferable that a linear expansion coefficient is small. The heat sink 12 may be formed by extrusion molding of a metal material, but may be formed by a method other than extrusion molding. As this metal material, aluminum (Al), iron (Fe), or the like can be used. The heat sink 12 may be ceramic instead of a metal material, or may be a high thermal conductive resin to which a filler having thermal conductivity is added.

(Power feed cap 13)
The power supply base 13 is an example of a base part, and the power supply base 13 is attached to one end of the diffusion cover 2 as shown in FIG. 1. The power supply base 13 includes a pair of conductive power supply terminals 13a and a bottomed cylindrical power supply base case 13b (base member) in which these power supply terminals 13a are embedded. As described above, the power supply terminal 13a is electrically connected to one end of the substrate 11b, and is connected to the external power supply of the lighting fixture 20, thereby supplying power to the lighting circuit element of the substrate 11b.

  The power supply terminal 13a is made of, for example, a conductive metal material, and the power supply base case 13b is made of, for example, an insulating resin material. The power supply terminal 13a and the power supply base casing 13b are integrally formed by insert molding or the like. The power supply base 13 may be a GX16 type base, for example, but other types of bases, such as a G13 type base, may be used.

(Earth cap 14)
The ground cap 14 is an example of a cap portion, and is attached to the other end portion of the diffusion cover 2 as shown in FIG. The ground base 14 includes a ground terminal 14a having conductivity and a bottomed cylindrical ground base casing 14b (base member) in which the ground terminal 14a is embedded. The ground lamp 14 is grounded by connecting the ground terminal 14 a to the ground portion of the lighting fixture 20.

  The ground terminal 14a is made of, for example, a conductive metal material, and the ground base casing 14b is made of, for example, an insulating resin material. The ground terminal 14a and the ground cap casing 14b are integrally formed by insert molding or the like. The ground base 14 can be a GX16 type base, for example, but other types of bases such as a G13 type base can also be used.

(Diffusion cover 2)
The diffusion cover 2 is, for example, a cylindrical member extending in the longitudinal direction (arrow Y direction). In this case, the diffusion cover 2 is also referred to as an outer tube valve, a tube tube, or a straight tube. The diffusion cover 2 accommodates the light emitting unit 11. FIG. 3 is a side view showing the illumination lamp 1 according to the first embodiment. As shown in FIG. 3, the diffusion cover 2 includes a cover body 3 and a diffusion film 4 provided on the cover body 3.

(Cover body 3)
The cover body 3 is light transmissive and can be made of glass, for example, but may be made of resin. A diffusion film 4 is formed on the outer wall surface 3 a and the inner wall surface 3 b of the cover body 3. As described above, the diffusion film 4 includes the outer surface diffusion film 4 a formed on the outer wall surface 3 a of the cover body 3 and the inner surface diffusion film 4 b formed on the inner wall surface 3 b of the cover body 3.

(Diffusion film 4)
4 is a side sectional view showing the illumination lamp 1 according to Embodiment 1, and is an enlarged view of a portion surrounded by a broken line in FIG. As shown in FIG. 4, the outer surface diffusion film 4a and the inner surface diffusion film 4b are composed of a base material 6 to which a plurality of diffusion materials 5 are added, and irregularities 5a are formed on the surfaces thereof. The substrate 6 can be, for example, a resin such as acrylic, polycarbonate, or epoxy, but may be low-melting glass. Further, the unevenness 5 a is formed along the outer shape of the diffusing material 5. Further, the diffusing material 5 includes a mixture of a diffusing material 5 having a large external average particle size and a diffusing material 5 having a small external average particle size. The average film thickness Bave of 4 is larger. The average external particle diameter is an average value of particle diameters on the entire outer periphery of the diffusing material 5. Thereby, a part of the diffusing material 5 having a large outer diameter average particle size protrudes from the surface of the diffusion film 4 and becomes irregularities 5a. As described above, the unevenness 5a is formed along the outer shape of the diffusion material 5 having an outer average particle diameter larger than the average film thickness Bave of the diffusion film 4, and the diffusion cover 2 has an outer surface on which the unevenness 5a is formed. A diffusion film 4a and an inner surface diffusion film 4b are provided.

As the diffusing material 5, for example, an inorganic material such as SiO ₂ can be used, but an organic material may be used. And when using the diffusion material 5 of an inorganic material, the content rate of the diffusion material 5 with respect to the base material 6 is 10 weight% or more, for example, and when using the diffusion material 5 of an organic material, the diffusion material with respect to the base material 6 The content of 5 is, for example, 50% by weight or less. In FIG. 4, the diffusing material 5 is illustrated as a sphere, but the diffusing material 5 may be an ellipsoid or an indefinite shape. Moreover, although the external shape average particle diameter of the diffusion material 5 can be 2 micrometers-10 micrometers, for example, it is not restricted to these.

  Next, a method for manufacturing the illumination lamp 1 according to the first embodiment will be described. First, the diffusion material 5 is added to the base material 6. Next, the base material 6 is liquefied with a solvent, and the liquefied base material 6 is applied to the cover body 3. Then, the base material 6 is dried and hardened by heating the base material 6. As a result, the diffusion film 4 is formed on the cover body 3, and the diffusion material 5 is projected from the surface of the diffusion film 4, thereby generating the unevenness 5 a. The diffusion cover 2 is manufactured through the above steps. And the light emission part 11 is accommodated in this diffusion cover 2, and the illumination lamp 1 is manufactured.

  Next, the operation of the illumination lamp 1 according to the first embodiment will be described. In the first embodiment, irregularities 5a are formed on the surfaces of the outer surface diffusion film 4a and the inner surface diffusion film 4b. For this reason, the surface area of the outer surface diffusion film 4a and the inner surface diffusion film 4b is larger than that of the diffusion film having a flat surface. Thereby, in the inner surface diffusion film 4b, the area which contacts the adhesive 12c which adhere | attaches the heat sink 12 and the diffusion cover 2 increases. For this reason, the heat transferability from the adhesive 12c is improved, whereby the heat generated from the light emitting section 11 can be efficiently transmitted to the diffusion cover 2.

  And in the outer surface diffusion film 4a, since the area which contacts air increases, the heat dissipation from the diffusion cover 2 to air can be improved. Thus, this Embodiment 1 has the effect that the heat dissipation of the illumination lamp 1 can be improved since the unevenness | corrugation 5a is formed in the surface of the outer surface diffusion film 4a and the inner surface diffusion film 4b. In addition, even if the existing cover body 3 is used and the diffusion film 4 is formed on the cover body 3, the same effect can be obtained. Thus, the illumination lamp 1 according to Embodiment 1 is extremely versatile.

  In addition, for the purpose of forming the unevenness 5a on the diffusion cover 2, it is conceivable to form the unevenness 5a on the cover body 3 itself such as glass to make a rubbed glass. The rubbing glass itself becomes dirty. On the other hand, in the first embodiment, the cover body 3 is provided with the outer surface diffusion film 4a, and the outer surface diffusion film 4a is formed with the unevenness 5a. The main body 3 is not dirty. Furthermore, since the outer surface diffusion film 4a and the inner surface diffusion film 4b are formed on both surfaces of the cover body 3, the cover body 3 is protected by the outer surface diffusion film 4a and the inner surface diffusion film 4b. For this reason, the illumination lamp 1 can maintain the strength of the cover body 3 and suppress the deformation of the diffusion cover 2. This also makes it difficult for the electronic components and the like housed in the diffusion cover 2 to be broken, and the reliability is improved. And since the inner surface diffusion film 4b is formed in the cover main body 3, the area which contacts the adhesive 12c which adhere | attaches the heat sink 12 and the diffusion cover 2 increases, and adhesiveness improves.

  In addition, if there are few unevenness | corrugations 5a of the diffusion film 4, the heat dissipation effect will fall, and if there are many unevenness | corrugations 5a of the diffusion film 4, the transmittance | permeability of the light radiate | emitted from the light emission part 11 will fall. In addition, when the unevenness 5 a of the diffusion film 4 is large, the diffusion film 4 is easily peeled off from the cover body 3. For this reason, the number and size of the projections and depressions 5a, that is, the addition amount of the diffusing material 5 and the external average particle size are determined in consideration of the balance between light diffusibility and heat dissipation.

(First modification)
Next, the illumination lamp 100 which concerns on the 1st modification of this Embodiment 1 is demonstrated. FIG. 5 is a front sectional view showing an illumination lamp 100 according to a first modification. As shown in FIG. 5, in the circumferential cross section of the diffusion cover 102, two line segments connecting the center point O of the diffusion cover 102 and the intersections H <b> 1 and H <b> 2 of the flat portion 12 a and the arc portion 12 b in the heat sink 12. The points where the extended line intersects the outer wall of the cover body 3 of the diffusion cover 102 are denoted by A1 and A2, respectively. Out of the diffusion film 104, an outer surface diffusion film 104a is formed on the outer wall portion of the cover body 3 from A1 to A2. That is, the outer surface diffusion film 104a is formed in a portion where the cover body 3 and the heat sink 12 are in contact with each other. The inner surface diffusion film 104b is formed on the entire circumference of the cover body 3.

  Most of the heat generated from the light emitting unit 11 is transmitted to the heat sink 12 and further to the diffusion cover 102. In the first modification, the outer surface diffusion film 104a is formed in a portion where the cover main body 3 and the heat sink 12 are in contact with each other, so that the heat transmitted from the heat sink 12 to the diffusion cover 102 is outside the illumination lamp 100. Heat can be radiated efficiently. In addition, since the outer surface diffusion film 104a is not formed over the entire outer periphery of the cover body 3, the formation cost of the outer surface diffusion film 104a can be reduced. As described above, in the first modified example, the effect of cost reduction is achieved while maintaining the heat dissipation effect. The outer surface diffusion film 104a may be formed of a heat conductive film that does not have light diffusibility.

(Second modification)
Next, an illumination lamp 200 according to a second modification of the first embodiment will be described. FIG. 6 is a side sectional view showing an illumination lamp 200 according to a second modification. As shown in FIG. 6, in the second modified example, in the diffusion film 204, the unevenness 5a is formed on the surface of the outer surface diffusion film 204a, and the surface of the inner surface diffusion film 204b is flat. In the outer surface diffusion film 204a, a large amount of the diffusing material 5 having a large outer average particle diameter is added, and as a result, irregularities 5a are formed on the surface thereof. That is, the plurality of average particle diameters, which is the average value of the outer average particle diameters of the plurality of diffusion materials 5, are large. Therefore, the outer surface diffusion film 204a has high heat dissipation while providing light diffusibility. On the other hand, in the inner surface diffusion film 204b, a large amount of the diffusion material 5 having a small outer mean particle diameter is added, and the unevenness 5a is not formed on the surface. Thereby, the surface is flat. That is, the plurality of average particle diameters of the plurality of diffusion materials 5 are small. Therefore, the inner surface diffusion film 204b is not so high in heat dissipation but has high light diffusibility.

  As described above, in the second modification, the plurality of average particle sizes of the plurality of diffusion materials 5 in the outer surface diffusion film 204a are larger than the plurality of average particle sizes of the plurality of diffusion materials 5 in the inner surface diffusion film 204b. Thus, the 2nd modification produces the effect that the balance of heat dissipation and light diffusivity can be aimed at by adjusting the addition rate of the diffusion material 5 of a different external shape average particle diameter.

(Third Modification)
Next, an illumination lamp 300 according to a third modification of the first embodiment will be described. FIG. 7 is a side sectional view showing an illumination lamp 300 according to a third modification. As shown in FIG. 7, the third modification differs from the second modification in that the amount of the base material 6 of the inner surface diffusion film 304b in the diffusion film 304 is reduced as the diffusion cover 302, and the outer surface diffusion film. 304a is the same as that of the 2nd modification. In the third modified example, since the amount of the base material 6 is reduced in the inner surface diffusion film 304b, the diffusion material 5 is easily protruded by that amount, and as a result, the unevenness 5a is formed on the surface of the inner surface diffusion film 304b. . Thereby, in addition to the effect obtained in the second modification, the inner surface diffusion film 304b also improves heat dissipation while maintaining high light diffusibility.

(Fourth modification)
Next, the illumination lamp 400 which concerns on the 4th modification of this Embodiment 1 is demonstrated. FIG. 8 is a side sectional view showing an illumination lamp 400 according to a fourth modification. As shown in FIG. 8, in the fourth modified example, a large amount of the diffusion material 5 having a small outer average particle diameter is added to the outer surface diffusion film 404 a of the diffusion film 404 as the diffusion cover 402. Has been reduced. Thereby, the unevenness | corrugation 5a is formed in the surface. On the other hand, in the inner surface diffusion film 404b, a large amount of the diffusing material 5 having a large outer average particle diameter is added, thereby forming irregularities 5a on the surface thereof. That is, the configuration of the outer surface diffusion film 404a and the inner surface diffusion film 404b is reversed from the configuration of the inner surface diffusion film 304b and the outer surface diffusion film 304a in the third modification. Also in this fourth modified example, both of the light diffusibility and the heat dissipation can be achieved on both sides.

(Lighting device 30)
Next, the illuminating device 30 of this Embodiment 1 is demonstrated. FIG. 9 is a perspective view showing the lighting device 30 according to the first embodiment. As shown in FIG. 9, the illuminating device 30 is provided with the illumination lamp 1 which has comprised the shape of the straight pipe which concerns on Embodiment 1, and the lighting fixture 20 to which this illumination lamp 1 is attached. The lighting fixture 20 includes, for example, a main body 21 that is attached to the ceiling of a room and extends in the longitudinal direction (the direction of the arrow Y), and sockets 22 that are formed at both ends of the main body 21.

  The both ends of the lighting lamp 1 are inserted into the socket 22 and attached to the lighting fixture 20. At that time, the power supply terminal 13 a of the power supply base 13 is connected to the terminal of the socket 22, and the ground terminal 14 a of the ground base 14 is connected to the terminal of the socket 22. The illumination device 30 includes an illumination lamp 1 having a straight tube shape, and the illumination device 30 is attached to the ceiling of the room to illuminate the room.

Embodiment 2. FIG.
Next, the illumination lamp 500 according to the second embodiment will be described. FIG. 10 is a front view showing an illumination lamp 500 according to the second embodiment. The second embodiment is different from the first embodiment in that the diffusion cover 502 is in the shape of a bulb globe and is a bulb-shaped illumination lamp 500. In the second embodiment, portions common to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences from the first embodiment will be mainly described.

  As shown in FIG. 10, the illumination lamp 500 includes a diffusion cover 502, a housing 510, and a base 511. Among these, the housing | casing 510 is provided with the metal housing | casing part 510a and the resin housing | casing part 510b.

  The configuration of the diffusion cover 502 is the same as that of the diffusion cover 502 in the first embodiment except for the shape, and is different from the first embodiment in that the shape is a dome shape. The diffusion cover 502 is fitted to one end of a cylindrical metal casing 510a, and a plurality of heat radiating fins are formed on the metal casing 510a. One end of a cylindrical resin casing 510b is fitted to the other end of the metal casing 510a. The resin casing 510b includes a metal casing 510a, a base 511, and the like. Is to insulate. Further, one end portion of a cylindrical cap portion 511 is fitted to the other end portion of the resin casing portion 510b, and a cap terminal 511a is formed at the other end portion of the cap portion 511. Then, power is supplied from an external power source to a light emitting unit (not shown) accommodated in the illumination lamp 500 through the base terminal 511a.

  As described above, the diffusion cover 502 according to the second embodiment has the same configuration as that of the first embodiment except for the shape. For this reason, even in the bulb-shaped illumination lamp 500 as in the second embodiment, the extremely high heat dissipation effect obtained in the first embodiment can be obtained.

(Lighting device 530)
Next, the illuminating device 530 of this Embodiment 2 is demonstrated. FIG. 11 is a front view showing illumination device 530 according to Embodiment 2. FIG. As shown in FIG. 11, the illumination device 530 includes a light bulb-shaped illumination lamp 500 including a diffusion cover 502 that has the shape of a light bulb according to Embodiment 2, and a lighting fixture 520 to which the illumination lamp 500 is attached. It has. The lighting fixture 520 is provided on the ceiling of a room, for example, and includes a fixture mounting portion 521, a fixture body 522, a socket 523, and a reflector 524.

  The ceiling fixture mounting portion 521 is provided with a hole of a size that can store the illumination lamp 500, and this is a fixture body 522. The appliance body 522 is provided with a socket 523 to which the illumination lamp 500 is attached at the back, and the illumination lamp 500 is attached to the appliance body 522 by attaching the base portion 511 of the illumination lamp 500 to the socket 523. Installed. A dome-shaped reflector 524 for reflecting light emitted from the illumination lamp 500 is provided on the inner wall of the instrument body 522.

  As described above, the illumination lamp 500 according to Embodiment 2 can be installed on the ceiling and used as the illumination device 530 for the ceiling, but can also be used as another illumination device 530. For example, it can be used as a lighting device 530 that is installed on a desk and illuminates the desk.

  DESCRIPTION OF SYMBOLS 1 Illumination lamp, 2 Diffusion cover, 3 Cover main body, 3a Outer wall surface, 3b Inner wall surface, 4 Diffusion film, 4a Outer surface diffusion film, 4b Inner surface diffusion film, 5 Diffusion material, 5a Concavity and convexity, 6 Base material, 10 Light source module, 11 Light emitting part, 11a LED, 11b substrate, 12 heat sink, 12a flat part, 12b arc part, 12c adhesive material, 13 power supply base, 13a power supply terminal, 13b power supply base case, 14 ground base, 14a ground terminal, 14b ground base case Body, 20 Lighting fixture, 21 Body part, 22 Socket, 30 Lighting device, 100 Lighting lamp, 102 Diffusion cover, 104 Diffusion film, 104a Outer diffusion film, 104b Inner diffusion film, 200 Lighting lamp, 202 Diffusion cover, 204 Diffusion film 204a outer surface diffusion film, 204b inner surface diffusion film, 300 illumination lamp, 02 diffusion cover, 304 diffusion film, 304a outer diffusion film, 304b inner diffusion film, 400 illumination lamp, 402 diffusion cover, 404 diffusion film, 404a outer diffusion film, 404b inner diffusion film, 500 illumination lamp, 502 diffusion cover, 510 housing Body, 510a metal housing part, 510b resin housing part, 511 base part, 511a base terminal, 520 lighting equipment, 521 equipment mounting part, 522 equipment body, 523 socket, 524 reflector, 530 lighting device.

Claims (13)

A light-transmitting cover body in which the light emitting unit is accommodated;
A diffusion cover, comprising: a diffusion film that is provided on the cover body and diffuses light emitted from the light emitting portion and has irregularities formed on a surface thereof. The diffusion film is obtained by adding a diffusion material to a base material,
The unevenness formed on the surface of the diffusion film is
The diffusion cover according to claim 1, wherein the diffusion cover is formed along an outer shape of the diffusion material. The unevenness formed on the surface of the diffusion film is
The diffusion cover according to claim 2, wherein the diffusion cover is formed along an outer shape of a diffusion material having an outer average particle diameter larger than an average film thickness of the diffusion film. The light emitting unit
It is housed in the cover body in a state of being placed on the heat conducting member,
The diffusion film is
The diffusion cover according to any one of claims 1 to 3, wherein the cover body and the heat conducting member are formed in contact with each other. The diffusion film is
It has an outer surface diffusion film formed in the outer wall surface of the said cover main body. The diffusion cover of any one of Claims 1-4 characterized by the above-mentioned. The diffusion film is
The diffusion cover according to any one of claims 1 to 5, further comprising an inner surface diffusion film formed on an inner wall surface of the cover body. The diffusion film is
It is formed on the outer wall surface and the inner wall surface in the cover body,
The plurality of average particle diameters of the plurality of diffusion materials in the outer surface diffusion film formed on the outer wall surface of the cover body is the plurality of average particle diameters of the plurality of diffusion materials in the inner surface diffusion film formed on the inner wall surface of the cover body. The diffusion cover according to claim 3, wherein the diffusion cover is larger. The diffusion film is
Formed on the inner wall surface and the outer wall surface of the cover body,
The plurality of average particle diameters of the plurality of diffusion materials in the inner surface diffusion film formed on the inner wall surface of the cover body is the plurality of average particle diameters of the plurality of diffusion materials in the outer surface diffusion film formed on the outer wall surface of the cover body. The diffusion cover according to claim 3, wherein the diffusion cover is larger. The light emitting unit;
An illuminating lamp comprising: the diffusion cover according to claim 1. The illumination lamp according to claim 9, wherein the diffusion cover has a shape of a straight pipe. The illumination lamp according to claim 9, wherein the diffusion cover has a shape of a bulb globe. The illumination lamp according to any one of claims 9 to 11,
A lighting apparatus to which the illumination lamp is attached. Adding a diffusion material to the substrate;
Applying the base material liquefied with a solvent to a light-transmitting cover body;
And a step of drying and curing the base material to form a diffusion film having irregularities formed on the surface of the cover body. A method for producing a diffusion cover.

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