JP6067074B2 - Light emitting diode lamp and method for manufacturing light emitting diode unit - Google Patents

Description

  The present invention relates to a street light LED (light emitting diode element) bulb, for example. In particular, the present invention realizes an LED light bulb having a wide light distribution close to an HID lamp (High Intensity Discharge lamp) used for a street light or a security light.

(1) Conventional HID lamp:
A. Since the luminous flux is large and wide and can be illuminated far, it has been widely used in outdoor applications such as street lights and security lights. It has also been used for base-down and base-up equipment.
B. High power consumption and short life (about 10,000 hours).
C. Since light is emitted by mercury discharge, it takes time until the mercury in the arc tube evaporates and the brightness is stabilized.

(2) Light bulb shaped LED:
A. The directivity of light is high, and it is suitable for irradiation in a certain direction such as improvement of the illuminance directly below the bottom surface (Patent Document 1: JP 2009-4130 A).
In this case, several arrangements are sufficient, the amount of heat generated by the LED itself is small, and a high life of about 40000 hours can be maintained as compared with a discharge lamp such as an HID lamp.
B. The following lamps have been devised as LED lamps to replace conventional outdoor HID lamps.
As with a conventional discharge lamp, an inert gas is sealed in a glass bulb, and after sealing, a screw-type base is attached to facilitate compatibility with a conventional discharge lamp and a concave mirror is provided behind the LED. Thus, the radiation angle of the LED light is expanded (Patent Document 2: Japanese Patent Laid-Open No. 62-124781).

JP 2009-4130 A Japanese Patent Laid-Open No. 62-124781 JP 2010-55993 A JP 2010-182796 A JP 2011-70971 A

A. HID can be used to illuminate the outdoors widely and far away like conventional HID lamps by simply replacing the lighting device in the widely used street and security light fixtures and using the reflectors and receiving metal. Light distribution and emission intensity that are practically comparable to lamps are required.
B. If the light distribution is non-directional and the light from the light emitting diode 11 is distributed in almost all directions, it can be used not only for street lights that are mainly lit on the lower surface but also for base-down and base-up fixtures. Is possible.
C. With the LED lamp of Patent Document 2, it is difficult to obtain a light distribution and light emission intensity that are inferior to those of an HID lamp, and it is necessary to greatly increase the number of LEDs and to direct the LED light in all directions as with the HID lamp.
D. Due to the accumulation of a large number of LEDs, the temperature in the lamp becomes high, and the LEDs deteriorate quickly, making it difficult to maintain the life like the LED lamp of Patent Document 1. In addition, when a metallic heat dissipator as in Patent Document 1 is installed on the lower surface of the LED substrate in order to release heat generated by the LED, the number of LEDs is large, and the LEDs are arranged along a vertically long cylindrical bulb. For this reason, not only the heat dissipating body becomes heavy, but the heat dissipating efficiency becomes worse as the length of the vertically long arrangement becomes longer.
E. In order to use a large number of LEDs and direct the LED light in all directions like HID lamps, the LEDs must be arranged in a distributed manner in the length direction and circumferential direction of the lamp. In order to manufacture, the material cost and the manufacturing cost become high.

The light emitting diode lamp according to the present invention is:
A light emitting diode unit in which a light emitting diode is mounted on a side surface of a prismatic support member and a cone surface disposed on the top of the support member;
A cover for covering the light emitting surface of the light emitting diode unit ;
The support member has n side surfaces formed in a state where one aluminum plate is bent along a fold line parallel to the axial direction of the support member,
A ribbon-like flexible substrate on which the light emitting diode is mounted is disposed on each of the n side surfaces .

  According to the present invention, a light emitting diode unit having a cylindrical bulb shape can be obtained, and a light emitting diode lamp having a light distribution and shape close to that of an HID lamp can be provided.

1 is a front side view of a light emitting diode unit 10 according to Embodiment 1. FIG. FIG. 3 is a plan view of the light emitting diode unit 10 according to the first embodiment. 1 is a front side view of a light emitting diode lamp 20 according to Embodiment 1. FIG. FIG. 3 is a plan view of the light-emitting diode lamp 20 according to the first embodiment. FIG. 3 is a front side view of the light emitting diode lamp 20 without the base 23 in the first embodiment. FIG. 6 shows a change in color temperature of the light-emitting diode lamp 20 in the first embodiment. FIG. 6 is a development view of a support member 13 of the light emitting diode unit 10 according to Embodiment 3. FIG. 6 is a front side view of a support member 13 of a light emitting diode unit 10 according to Embodiment 3. FIG. 6 is a plan view of a support member 13 of a light emitting diode unit 10 according to Embodiment 3. FIG. 6 is a front side view of a light emitting diode unit 10 according to Embodiment 3. FIG. 6 is a plan view of a light emitting diode unit 10 according to Embodiment 3. FIG. 6 is a front side view of a light-emitting diode lamp 20 according to Embodiment 3. FIG. 6 is a plan view of a light-emitting diode lamp 20 according to Embodiment 3. FIG. 7 is a dimensional diagram of the light-emitting diode lamp 20 according to the third embodiment. FIG. 4 shows Table-1, Table-2, and Table-3 in Embodiment 3. FIG. 4 shows Table-4 in the third embodiment. The top view of the light emitting diode lamp 20 of the light emitting diode unit 10 of the hexagonal column in Embodiment 3. FIG. FIG. 5 shows Table-5 in the third embodiment. FIG. 10 shows a table of a comparative example in the third embodiment. FIG. 6 is a front side view of a light emitting diode unit 10 according to a fourth embodiment. FIG. 6 is a plan view of a light emitting diode unit 10 according to a fourth embodiment. FIG. 6 is a front side view of a light emitting diode lamp 20 according to a fourth embodiment. FIG. 6 is a plan view of a light emitting diode lamp 20 according to a fourth embodiment. FIG. 6 shows Table-6 in the fourth embodiment. The figure which shows the graph of h / D of Table-6 in Embodiment 4, and valve | bulb surface temperature. FIG. 8 shows Table-7 in the fourth embodiment. The figure which shows the graph of h / D of Table-7 in Embodiment 4, and valve | bulb surface temperature. FIG. 8 shows Table-8 in the fourth embodiment. The figure which shows the graph of (DELTA) d of Table-8 in Embodiment 4, and valve | bulb surface temperature. The figure of the light emitting diode lamp 20 of the support member 13 of the octagonal prism in Embodiment 5. FIG. The figure of the light emitting diode lamp 20 of the hexagonal column support member 13 in Embodiment 5. FIG. FIG. 6 shows a lighting fixture equipped with a light-emitting diode lamp 20 according to a fifth embodiment. FIG. 6 shows a lighting fixture equipped with a light-emitting diode lamp 20 according to a fifth embodiment. FIG. 6 shows a lighting fixture equipped with a light-emitting diode lamp 20 according to a fifth embodiment.

Embodiment 1 FIG.
(1) 1st form (FIGS. 1-6)
FIG. 1 is a front side view of the light emitting diode unit 10, and FIG. 2 is a plan view.
FIG. 3 is a front side view of the light-emitting diode lamp 20, and FIG. 4 is a plan view. FIG. 5 shows a front side view without the base 23.
The light emitting diode unit 10 includes an aluminum octagonal column support member 13. The support member 13 is a holding member that holds the light emitting diode 11. The light emitting diode unit 10 has a trapezoidal cone 18 having eight faces on the top of the support member 13.

  A ribbon-like flexible substrate 12 (light-emitting diode substrate) on which one light-emitting diode 11 is mounted is attached to the eight surfaces of the cone 18 with a heat-resistant adhesive. Further, a ribbon-like flexible substrate 12 (light emitting diode substrate) on which three light emitting diodes 11 are mounted on each of the eight side surfaces of the octagonal prism is attached with a heat resistant adhesive.

A pair of base support columns 14 are attached in the axial direction of the octagonal column to a base portion (a base portion on the base 23 side of a pair of side surfaces facing each other) of one side surface of the octagonal column.
Further, a shaft column 15 is attached to the center of the bottom surface of the octagonal column in the axial direction of the support member 13 of the octagonal column.

  A lead-in wire 17 is led out from the bottom surface of the octagonal column support member 13 to input and output a direct current to the light emitting diode 11.

These three support columns are connected to another connection support column 16 in a direction perpendicular to the axial direction of the octagonal column support member 13.
These struts are made of stainless steel.

For example, the diameter of the circumscribed circle of the bottom surface of the octagonal column support member 13 is 50 mm, and the height of the octagonal column support member 13 not including the pyramid portion is 150 mm.
A substrate on which the light emitting diode 11 is mounted is a flexible substrate 12. The light emitting diode 11 is mounted on the flexible substrate 12, and the flexible substrate 12 is attached to an aluminum substrate. A vertically long substrate is connected to form a prismatic polyhedral structure. By making the apex of the prismatic polyhedral structure into a prismatic shape, it can be adapted to the hemispherical or dome-shaped apex of the glass bulb 21. The light emitting diode 11 can be disposed in the angled portion. The bending angle of the angled portion is determined according to the radius R of the top of the glass bulb 21.

The light emitting diode lamp 20 will be described with reference to FIGS. 3, 4, and 5.
The light emitting diode lamp 20 includes a housing 24. The housing 24 includes a glass bulb 21 and a flare tube 22. The casing 24 is all transparent. Alternatively, the lower portion of the casing 24 where the light emitting diode 11 is not disposed may be opaque. The glass bulb 21 has a cylindrical shape with a hemispherical upper portion.

  The light emitting diode unit 10 is inserted into the glass bulb 21. The space between the glass bulb 21 and the light emitting diode unit 10 is transparent and thermally conductive silicone resin from the inner surface of the hemispherical top of the glass bulb 21 to the height of the bottom surface of the octagonal column support member 13 of the light emitting diode unit 10. Silicone rubber made of Shin-Etsu silicone (KE109) is filled (not shown).

The flare tube 22 is a glass sealing part fused to the end of the glass bulb 21.
The shaft column 15 led out in the axial direction of the octagonal column support member 13 from the center of the bottom surface of the octagonal column support member 13 is embedded in the end portion of the shaft column 15 when the flare tube 22 is pinched. Embedded in the flare tube 22. When the glass flare tube 22 fused to the end of the glass bulb 21 is pinched, the introduction line 17 led out from the bottom surface of the octagonal column support member 13 is configured such that the end of the introduction line 17 is the flare tube 22. It is embedded in the flare tube 22 so as to be led out from the end of the flare tube.

  When sealing the tip tube at the end of the glass bulb 21, nitrogen gas is sealed and replaced with the air in the bulb.

  The two lead wires 17 are wired to an E39 base 23 installed at the end of the glass bulb 21.

  As shown in FIG. 6, the one filled with the heat conductive silicone resin has a higher color temperature of the lamp, and the color of the lamp is shifted in the blue direction, as shown in FIG. 6. Looks bright. Further, since the color temperature of the lamp becomes high, the light emitting diode 11 having a lower color temperature can be used in advance. This can reduce the amount of yellow YAG phosphor that is the cause of deterioration in the most common pseudo-white light-emitting diode 11 formed by coating the blue light-emitting diode 11 with a yellow YAG phosphor.

  The reason why the color of the lamp shifts in the blue direction due to the filling of the thermally conductive silicone resin is not clear, but is considered to be due to absorption from infrared to red by an organic substance such as silicone resin.

  Although the E39 base 23 is used as the base 23, an E26 base 23 compatible with the HID lamp may be used.

Embodiment 2. FIG.
(2) Second embodiment (not shown)
Instead of the transparent and heat conductive silicone resin in the first embodiment, a perfluorocarbon liquid may be filled as the transparent heat conductive liquid. The perfluorocarbon liquid has a high density and efficiently absorbs heat generated by the light emitting diode 11 and transmits it to the glass bulb 21. The perfluorocarbon liquid is an insulating liquid and does not cause a short circuit even when it comes into contact with the wiring portion such as the introduction line 17.

  As shown in FIG. 6, the lamp filled with the perfluorocarbon liquid has a higher color temperature of the lamp and the lamp color shifts in the blue direction and appears brighter than the lamp not filled (only with nitrogen). Further, since the color temperature of the lamp becomes high, the light emitting diode 11 having a lower color temperature can be used in advance. This can reduce the amount of yellow YAG phosphor that is the cause of deterioration in the most common pseudo-white light-emitting diode 11 formed by coating the blue light-emitting diode 11 with a yellow YAG phosphor.

  The reason why the color of the lamp shifts in the blue direction due to the filling of the perfluorocarbon liquid is not clear, but is considered to be due to absorption of infrared to red by the perfluorocarbon liquid.

For example, density 1.83 (kg / m ³ @ 25 ° C.), specific heat 1.050 (J / kg K @ 25 ° C.), dielectric strength 43 kV (2.54 mm Gap @ 25 ° C.), dielectric constant 1.91 kV (@ 25 ° C. ) [1 kHz] “Fluorinert (“ FLUORINERT ”is a registered trademark)” FC-3283 manufactured by Sumitomo 3M Limited (“@ 25 ° C.” means “at 25 ° C.”).

The perfluorocarbon liquid is transparent and insulative, and if the density is higher than water and the specific heat is similar to water, the light emitting diode substrate can be cooled directly in the energized state, and the heat radiation efficiency is better than water cooling. The density may be 1.5 (kg / m ³ @ 25 ° C.) or more.

For example, density 1.68 (kg / m ³ @ 25 ° C.), specific heat 1.050 (J / kg K @ 25 ° C.), dielectric strength 38 kV (2.54 mm Gap @ 25 ° C.), dielectric constant 1.76 kV (@ 25 ° C. ) [1 kHz] Sumitomo 3M Co. "Fluorinert (" FLUORINERT "is a registered trademark)" FC-72 may be used.

Embodiment 3 FIG.
(3) Third embodiment (FIGS. 7 to 13)
Hereinafter, differences from the first and second embodiments will be described.
FIG. 7 is a development view of the support member 13 of the light emitting diode unit 10.
8 and 9 are a front side view and a plan view of the support member 30 after the support member 13 is bent and assembled. FIG. 7 illustrates the support member 13 before mounting the light emitting diode. A light-emitting diode or a circuit is mounted on the support member 13 in FIG. 7, and then folded and assembled into the shape of the support member 30 after the folded assembly in FIGS.

  As shown in FIGS. 7, 8, and 9, the support member 13 is formed into a three-dimensional shape by bending an aluminum integrated plate to form a three-dimensional surface. If the integrated plate is formed by bending, the thermal conductivity is improved.

  FIG. 10 is a front side view of the light emitting diode unit 10, and FIG. 11 is a plan view.

An aluminum octagonal pyramid is formed on the top of the aluminum octagonal column support member 13.
Four surface light emitting diodes 11 are mounted on each of the eight faces of the octagonal pyramid. In addition, three light emitting diodes 11 are mounted on each of the eight surfaces of the octagonal column support member 13 in one row.
The support member 13 is insulated and doubles as a light emitting diode substrate.

  FIG. 12 is a front side view of the light-emitting diode lamp 20, and FIG. 13 is a plan view.

  The transparent heat conductive medium in which the light emitting diode unit 10 is inserted into a cylindrical glass bulb 21 having a hemispherical upper portion and the space between the glass bulb 21 and the light emitting diode unit 10 is filled is described in the first and second embodiments. (Not shown).

As illustrated in FIGS. 7 and 17, the width w (the width w of one side surface of the octagonal column) perpendicular to the axis of the octagonal column support member 13 on the side surface of the octagonal column support member 13 of the lamp is 17. 15 mm.
A line extending perpendicularly to the side surface of the octagonal column support member 13 from the center of the cross section of the cylindrical valve intersects with the side surface of the octagonal column support member 13 and a point intersecting the valve inner surface of the line vertically extended The distance Δk (the distance Δk from the center of one side surface of the support member 13 to the inner surface of the valve) is 2.4 mm.
The height h of the octagonal column support member 13 is 110 mm.

The bulb inner diameter D of the glass bulb 21 of the E39 base 23 specification is 48 mm.
The diameter d of the square circumscribed circle is 44.8 mm.

(Determination of polygon n)
The width w in the direction perpendicular to the axis of the polygonal column on the side of the polygonal column is 17.15 mm,
The distance Δk between the point intersecting the polygonal column side surface of the line extending perpendicularly from the center of the cross section of the cylindrical bulb to the polygonal column side surface and the point intersecting the valve inner surface of the line extending vertically is 3.0 mm,
Select a polygon that satisfies the inner diameter D of 48 mm, which is compatible with the E39 base 23 HID lamp.

The meanings of the symbols in the dimensional diagram of FIG. 14 are as follows.
D: Inner diameter of glass bulb 21 d: Diameter of circumscribed circle of light emitting diode unit 10 w: Width of one side of light emitting diode unit 10 b: Distance from center of glass bulb 21 to light emitting diode 11 Δr: Inner diameter of glass bulb 21 Difference between D and circumscribed circle diameter d Δk: radial distance from light emitting diode 11 to inner surface of glass bulb 21 Δg: radial distance from light emitting diode 11 to circumscribed circle Width of one side of light emitting diode unit 10 “w” is equal to or larger than the width direction of the light emitting diode 11 and equal to or larger than a width in which a signal line can be wired. When a flexible substrate is attached, the width w is equal to or greater than the width of the flexible substrate and the width that allows signal lines to be wired.

If the width w is increased, n is reduced, and the following advantages are obtained.
1. The number of times of bending of the support member 13 is reduced.
2. The alignment of the top of the cone 18 is facilitated.

If the width w is decreased, n increases, and the following advantages are obtained.
1. The light emitting diode 11 approaches the inner surface of the glass bulb 21.
2. Increases heat dissipation effect (Embodiment 4 described later)

The diameter d of the circumscribed circle of the n-gonal shape with the width w in the direction perpendicular to the axis of the polygonal column on the side of the polygonal column is
Sin (180 ° / n) = w / d
Than,
d = w / Sin (180 ° / n)
It is represented by

The difference Δg between (d / 2) and the distance b between the center of the perpendicular extending from the center of the polygon to the side of the polygon and the intersection of the side and the perpendicular is
Δg = d / 2−b
b = √ ((d / 2) ² − (w / 2) ² )
Than,
Δg = (d / 2) −√ ((d / 2) ² − (w / 2) ² )
It is represented by

When the distance Δr between the inner circumference of the valve arranged concentrically and the circumscribed circumference of the polygon,
Δr = Δk−Δg
It is represented by

The valve inner diameter D that satisfies Δk at the determined w is
D = d + 2Δr
= D + 2 (Δk−Δg)
= D + 2 (Δk− (d / 2) + √ ((d / 2) ² − (w / 2) ² ))
= D + 2Δk−d + 2√ ((d / 2) ² − (w / 2) ² )
= 2Δk + 2√ ((d / 2) ² − (w / 2) ² )
= 2Δk + 2√ ((w / 2Sin (180 ° / n)) ² − (w / 2) ² )
It is represented by

  This expression indicates that the inner diameter D of the glass bulb 21 is a function of Δk, w, and n. Further, when Δk and w are constant, the inner diameter D of the glass bulb 21 is a function of n. Conversely, it is shown that n is determined when Δk, w, and the inner diameter D are set to predetermined values.

  When w = 17.15 mm and Δk = 3.0 mm, D = 47.40 obtained from n = 8 from Table-1 in FIG. 15 is closest to the target D = 48 mm.

  When the target is within D = 48 mm, the maximum n that satisfies D = 48 mm may be selected.

  As described above, the width w of one side surface of the support member 13 is fixed to a predetermined width w = 17.15 mm, and the distance Δk from the center of one side surface of the support member 13 to the inner surface of the valve is a predetermined distance Δk = 3. It can be seen that the regular n-gon shape in which the light-emitting diode unit 10 can be arranged inside a cylindrical bulb fixed at 0.0 mm and having a predetermined bulb diameter D = 48 mm is a regular octagon. In other words, it can be seen that the optimum value of n of a regular n-square shape in which the light emitting diode unit 10 can be disposed inside a cylindrical bulb having a predetermined bulb diameter is 8.

  When w = 17.15 mm and Δk = 4.0 mm, D = 49.40 obtained from n = 8 from Table-2 in FIG. 15 is closest to the target D = 48 mm.

Δk when D = 48 mm is actually adopted is 3.3 mm from Table-4 in FIG.
Further, a polygon satisfying the inner diameter of 38.6 mm of the glass bulb 21 compatible with the E26 base 23 specification HID lamp is selected from the table of FIG.

  From Table-2 and Table-3 in FIG. 15, D = 37.7 and 39.7 obtained from n = 6 are closest to the target D = 38.6 mm (FIG. 17).

  Δk when D = 38.6 mm is actually adopted is 4.5 mm from Table-4 in FIG.

  When w = 17.15 mm, the target D = 48 mm and the target D = 38.6 mm can be achieved when n = 6 or more and 8 or less.

  The light-emitting diode unit 10 is desirably originally cylindrical, but a flat surface is necessary for arranging the light-emitting diodes 11. For that purpose, a polygon is formed, and it is ideal that the polygon is also closer to a cylinder. However, if the width w is reduced, n becomes larger and thus approaches a cylinder, but the manufacturing process is complicated due to an increase in the number of bendings.

  When the width w is increased, n is decreased, and the light emitting diode unit 10 becomes a triangular prism or a quadrangular prism and has a shape far from the cylinder.

  The cases where w = 5 mm, 15 mm, 20 mm, and Δk = 5.0 mm are shown in Table-5 in FIG.

  In the case of w = 5 mm, even if n = 18, D does not exceed 40 mm. Therefore, in order to achieve the target D = 48 mm, w = 5 mm is not suitable.

  In the case of w = 15 mm, n = 6 or more and 8 or less is preferable because the target D = 48 mm and the target D = 38.6 mm can be achieved.

  In the case of w = 20 mm, even if n = 6, D does not become 40 mm or less. Therefore, in order to achieve the target D = 38.6 mm, w = 20 mm is unsuitable.

  FIG. 19 is a table when w = 17.15 mm and Δk = 1.5 mm and Δk = 2.0 mm. When Δr is a negative value, it indicates that the light emitting diode unit 10 cannot be stored in the glass bulb 21. When Δr is less than 1 mm, the light emitting diode unit 10 can theoretically be accommodated in the glass bulb 21, but due to dimensional variation (plus or minus 1 to 2 mm) of the glass bulb 21, the light emitting diode unit 10 is made into glass during assembly. It becomes difficult to insert the valve 21.

15, 16, 18, and 19 show the calculated values of w / d and w / D.
As described above, since Sin (180 ° / n) = w / d, according to this equation, when n is determined, the ratio of w and d is known.

When n = 4, Sin (180 ° / n) = 0.71 = w / d
When n = 5, Sin (180 ° / n) = 0.59 = w / d
When n = 6, Sin (180 ° / n) = 0.50 = w / d
When n = 7, Sin (180 ° / n) = 0.43 = w / d
When n = 8, Sin (180 ° / n) = 0.38 = w / d
When n = 9, Sin (180 ° / n) = 0.34 = w / d
When n = 10, Sin (180 ° / n) = 0.31 = w / d
Therefore, when n is desired to be 4 to 10, w may be 0.71 to 0.31 of d.
When n is to be 6 to 8, w may be 0.5 to 0.38 of d.

Actually, as shown in FIGS. 15, 16, 18, and 19,
D = 2Δk + 2√ ((w / 2Sin (180 ° / n)) ² − (w / 2) ² ))
Thus, if n and Δk are determined, the ratio of w and D can be obtained.

  According to Table 1 in FIG. 15, when Δk = 3.0 mm and n is 4 to 10, w may be 0.74 to 0.29 of D. If n is to be 6 to 8, w may be 0.48 to 0.36 of D.

  According to Table-2 in FIG. 15, when Δk = 4.0 mm and n is desired to be 4 to 10, w may be set to 0.68 to 0.28 of D. When it is desired to set n to 6 to 8, w may be set to 0.45 to 0.35 of D.

  According to Table 3 in FIG. 15, when Δk = 5.0 mm and n is desired to be 4 to 10, w may be set to 0.63 to 0.27 of D. When n is desired to be 6 to 8, w may be set to 0.43 to 0.33 of D.

According to Table-4 in FIG.
When D = 48 mm, w = 17.15 mm is 0.36 times D.
When D = 38.6 mm, w = 17.15 mm is 0.44 times D.

  As described above, w is preferably in the range of 0.27 to 0.74 of D. Preferably, w is in the range of 0.33 to 0.38 of D. Furthermore, since it is better that Δk is small, w is preferably in the range of 0.48 to 0.36 of d.

From FIG. 15 to FIG. 19, when the target D = 48 mm, suitable n closest to the target is as follows.
When w = 17.15 mm and Δk = 3.0 mm, n = 8
When w = 17.15 mm and Δk = 4.0 mm, n = 8
When w = 15.00 mm and Δk = 5.0 mm, n = 8
When w = 20.00 mm and Δk = 5.0 mm, n = 6

For a target D = 36.8 mm, the preferred n that is closest to the target is:
When w = 17.15 mm and Δk = 3.0 mm, n = 6
When w = 17.15 mm and Δk = 4.0 mm, n = 6
When w = 15.00 mm and Δk = 5.0 mm, n = 6
When w = 5.00 mm and Δk = 5.0 mm, n = 17

  Note that n may be an odd number, but if it is an even number, the support structure is simplified and manufacturing is easy.

  By using the regular n-square light-emitting diode unit 10 having the preferable n thus obtained, even if the diameter of the glass bulb 21 is changed, there is no need to change the width w of each side surface of the light-emitting diode unit 10. There is an effect that the parts of the light emitting diode unit 10 can be shared.

  Further, by using a regular n-gonal light emitting diode unit 10 with a suitable n, even if the diameter D of the glass bulb 21 is changed, the distance Δk between the light emitting diode 11 and the inner surface of the glass bulb 21 can be kept constant or substantially constant. There is an effect that can. If the distance Δk between the light emitting diode 11 and the inner surface of the glass bulb 21 is set to a distance that allows the heat of the light emitting diode 11 to efficiently escape to the glass bulb 21 (a distance described in a fourth embodiment to be described later), a heat dissipation effect. High lamp can be obtained. Even when lamps having different diameters of the glass bulb 21 are manufactured, lamps having the same or substantially the same heat dissipation effect can be realized.

Embodiment 4 FIG.
(4) Fourth embodiment (FIGS. 20 to 29)
A preferred dimension ratio between the height and the diameter of the light emitting diode unit 10 and the distance between the light emitting diode 11 and the inner diameter portion of the glass bulb 21 will be described.

(Test method)
(FIGS. 20 to 23)
A light emitting diode unit 10 having a circumscribed circle diameter D of the octagonal column support member 13 and a height h of the octagonal column support member 13 is created by an aluminum support that also serves as a light emitting diode substrate as in the third embodiment. (FIGS. 22 and 21).
・ The top octagonal pyramid was omitted. Three light emitting diodes 11 are mounted on each side surface of the octagonal column support member 13 in a vertical row.
-The mounting position of the light emitting diode 11 is
A. The midpoint (b point) in the height direction of each surface,
B. The middle point (point a) of the light emitting diode 11 at the position A and the upper side of the side surface,
C. The middle point (point c) of the light emitting diode 11 at the position B and the lower side of the side surface
A total of 3 each, and 24 light emitting diode units 10 as a whole.
A lamp was created by sealing the end of the glass bulb 21 as in the first and third embodiments and mounting the screw-shaped base 23.
Two types of lamps were prepared: one that was filled and sealed with only nitrogen gas, and the other that was filled with perfluorocarbon and then sealed while blowing nitrogen gas (FIG. 22).

The distance l between the upper surface of the light emitting diode unit 10 and the inner surface of the top of the glass bulb 21 was 20 mm in all conditions.
The light emitting diode units 10 having different D: h ratios have the same volume V composed of the diameter of the circumscribed circle and the height of the prism so that they can be compared. The fixture mounting ability of the lamp is greatly influenced by the shape of the fixture, but the conditions for the lamp mounting fixture of the light emitting diode unit 10 having different D: h ratios are made uniform by making V the same. .
The distance Δd between the light emitting diode 11 and the inner diameter portion of the glass bulb 21 was changed by changing the diameter of the glass bulb 21 (FIG. 23).
-Each lamp was lit with the base, 23 parts down, with the same conditions such as power, voltage, and current. The following three temperatures on the outer surface of the glass bulb 21 were measured.
Points corresponding to the position of the upper light emitting diode 11 (B. above): point a,
Points corresponding to the position of the light emitting diode 11 in the center (A. above): point b,
Point corresponding to the position of the lower light emitting diode 11 (C. above): point c

(result)
(Preferred h / D)
Table 6 in FIG. 24: nitrogen gas sealed, no transparent heat conducting medium.
As shown in FIG. 25, the temperature decreases as h / D increases. h / D: Even at point a where the temperature is highest in a range where h / D is larger than about 1.5, the temperature is below 100 ° C. Further, the degree of temperature decrease h / D becomes smoother from about 1.5 to 2.0. This tendency is closer to the light emitting diode 11 and becomes more prominent at the point a which is the upper part of the lamp. Table 7 in FIG. 26: Nitrogen gas sealed, with transparent heat transfer medium (perfluorocarbon liquid).
As shown in FIG. 27, the temperature generally decreases as compared to Table-6. This is an effect of a transparent heat conductive medium (perfluorocarbon liquid).
As h / D increases, the temperature decreases. Temperature decrease h / D: From about 1.5 to 2.0, the temperature decreases more gently. This tendency is closer to the light emitting diode 11 and the effect of becoming more noticeable at the point a, which is the upper part of the lamp, is not as noticeable as without the transparent heat conducting medium, but the same tendency is observed.

  In addition, although temperature falls, so that h / D is large, the tendency will almost disappear from the time h / D exceeds about 3.0.

  On the other hand, if h / D exceeds 3.5, the lamp has to be elongated, and the dimensions are significantly different from those of the HID lamps conventionally used for street lamps.

  A preferable range of h / D is 1.5 to 3.5, and a more preferable range is 2.0 to 3.0.

(Preferred Δd and preferable Δk)
A preferred distance between the light emitting diode 11 and the inner surface of the glass bulb 21 will be described.
Table 8 in FIG. 28: Nitrogen gas sealed, with transparent heat transfer medium (perfluorocarbon liquid).
The radial distance Δd between the surface of the light emitting diode 11 and the inner surface of the glass bulb 21 was changed by changing the diameter of the glass bulb 21 (FIG. 23).

  As shown in FIG. 29, the temperature increases as the light emitting diode 11 moves away from the bulb inner surface.

  The temperature differs from 20 ° C. to 35 ° C. when the light emitting diode 11 is in contact with the inner surface of the bulb and when it is 20 mm away from the inner surface of the bulb.

  When the light emitting diode 11 is in contact with the inner surface of the bulb or closer to the inner surface of the bulb, the heat radiation effect is improved and the temperature is advantageous.

  When separating the light emitting diode 11 and the inner surface of the bulb, the bulb must be thickened or the light emitting diode unit 10 must be thinned. Increasing the thickness of the bulb is disadvantageous in terms of instrument mounting, and reducing the light emitting diode unit 10 is disadvantageous in terms of light distribution.

  As shown in FIG. 29, since the temperature gradient in the range where Δd is 5 mm or less is steeper than the temperature gradient in the range where 5 mm or more, Δd should be 5 mm or less and preferably 0 mm. .

  Therefore, a preferable range of Δd is 0 mm or more and 5 mm or less. Δd is preferably close to 0 mm.

  The light emitting diode 11 has a thickness X of at least 1 mm. Since Δk = Δd + X, a preferable range of Δk is 1 mm or more and 6 mm or less.

  Actually, design such as dimensional variation between the side surfaces of the prismatic support member 13, variation in the height (thickness X) of the light emitting diode 11, variation in height when the light emitting diode 11 is adhered, and dimensional variation in the glass bulb 21, etc. There are errors and manufacturing errors.

  When the design specification is such that the light emitting diode 11 contacts the inner surface of the bulb or the design specification close to the inner surface of the bulb, the variation in height between the respective light emitting diodes 11 is about 1 mm due to the dimensional variation and the like. It becomes difficult to insert into the valve 21. In order to insert the light emitting diode unit 10 into the glass bulb 21 during assembly, a minimum clearance (Δr) is required in all 360 degrees in the circumferential direction.

  If the height (thickness X) of the light emitting diode 11 is equal to or less than Δg, the clearance (Δr) can be provided in all 360 degrees in the circumferential direction without the surface of the light emitting diode 11 protruding from the circumscribed circle.

  According to FIG. 19 of Embodiment 3, when Δk is 2 mm or less, the clearance (Δr) is less than 1 mm, which is not preferable. Therefore, a more preferable range of Δk is 2 mm or more and 6 mm or less. In terms of the heat dissipation effect, Δk is preferably 2 mm or closer to 2 mm.

Embodiment 5. FIG.
(5) Fifth embodiment (FIGS. 30 to 34)
FIG. 30 is a diagram of the light-emitting diode lamp 20 of the octagonal column support member 13.
FIG. 31 is a diagram of the light-emitting diode lamp 20 of the hexagonal column support member 13.
32 to 34 show a lighting fixture on which the light emitting diode lamp 20 is mounted. Since the light distribution is not directional and the light from the light emitting diode 11 is distributed almost in all directions, not only the street light (FIG. 32) that is mainly illuminated on the lower surface but also the base down and base up. It can respond also to a lighting fixture (FIG. 33, FIG. 34).

  The features of the light-emitting diode lamps 20 of the first to fifth embodiments are roughly divided into two groups, and the features and effects are described below.

*** First feature group ***
Features 1.
In the light-emitting diode lamp 20, the light-emitting diode unit 10 in which the light-emitting diode 11 is mounted on a prismatic or cylindrical support member 13 is disposed in a housing 24, and the lead-in wire 17 led out from the light-emitting diode unit 10 is connected to the housing 24. Wiring was performed on the base 23 fitted to the end of the base.
The light-emitting diode lamp 20 covers the light-emitting surface of the light-emitting diode unit 10 with a glass cover that is a part of the casing 24, and also has an inner surface of the glass cover and a prismatic or cylindrical shape of the light-emitting diode unit 10. The light emitting diode 11 mounted on the side surface of the support member 13 is in proximity or in contact.
The light emitting diode lamp 20 has a prismatic or cylindrical support member 13 of the light emitting diode unit 10 whose axial height is circumscribed on the bottom surface of the prismatic support member 13 or the bottom surface of the columnar support member 13. It is characterized by being longer than the diameter.

Feature 2.
The axial height of the prismatic or cylindrical support member 13 of the light emitting diode unit 10 is 1.5 as the circumscribed circle of the bottom surface of the prismatic support member 13 or the diameter of the bottom surface of the columnar support member 13. The length is double to 3.5 times.

Feature 3.
The light emitting diode 11 mounted on the inner surface of the glass cover and the side surface of the prismatic or cylindrical support member 13 of the light emitting diode unit 10 is close to within 5 mm.

Feature 4.
The space between the light emitting surface of the light emitting diode unit 10 and the inner surface of the glass cover is filled with a transparent and insulating heat conducting medium.

Feature 5.
The transparent and insulating heat conductive medium is a silicone resin.

Feature 6
The transparent heat-conductive medium having an insulating property is a fluid having a density of 1.5 or more.

Feature 7.
The transparent, thermally conductive fluid having a density of 1.5 or more is a perfluorocarbon liquid.

Feature 8
The casing 24 including the glass cover is all made of a glass bulb. An inert gas is sealed in the glass bulb 21, and the lead-in wire 17 led out from the light emitting diode unit 10 is connected to the outside of the glass bulb 21. The end portion of the glass bulb 21 led to the above is sealed and sealed.

Feature 9
The light emitting diode unit 10 is held by a support column embedded on the sealing portion side of the glass bulb 21.

Feature 10
The light emitting diode 11 is mounted on a substrate, and the substrate is disposed on a side surface and an upper surface of the support member 13.

Feature 11.
The light emitting diode 11 is directly mounted on a side surface and an upper surface of the support member 13.

Feature 12.
A screw-type metal base 23 is attached to the sealing end of the glass bulb 21.

Feature 13.
Further, the light-emitting diode lamp 20 and a lighting device are arranged as a lighting fixture.

  The effects of the features of the light emitting diode lamp 20 are as follows.

Effect of Feature 1 The light emitting diode 11 on the light emitting surface on the side surface of the light emitting diode unit 10 is covered with or in contact with a glass cover having a larger heat capacity than that of the resin cover, and has a prismatic or cylindrical support member 13. The light emitting diode unit 10 whose axial height is longer than the circumscribed circle of the bottom surface of the prismatic support member 13 or the diameter of the bottom surface of the columnar support member 13 depends on the length direction of the lamp as in the HID lamp. Since a wide light distribution and light emission intensity can be obtained and heat can be efficiently radiated from the side surface of the light emitting diode unit 10, a light emitting diode lamp having a longer life can be provided.

Effect of Feature 2 The height in the axial direction of the prismatic or cylindrical portion of the prismatic or cylindrical support member 13 of the light emitting diode unit 10 is set to the circumscribed circle or columnar support member of the bottom surface of the prismatic support member 13. The length of the bottom surface of 13 is 1.5 to 3.5 times longer. Thus, a wider light distribution and emission intensity can be obtained in the length direction of the lamp as in the case of the HID lamp. Furthermore, since it is possible to efficiently dissipate heat from the side surface of the light emitting diode unit 10, a light emitting diode lamp having a longer life can be provided.

Effect of Feature 3 When the light emitting diode 11 mounted on the inner surface of the glass cover and the side surface of the prismatic or cylindrical support member 13 of the light emitting diode unit 10 is close to each other within 10 mm, the side surface of the light emitting diode unit 10 is obtained. Heat dissipation can be performed more efficiently, and the light-emitting diode lamp 20 having a longer life can be provided.

Effect of Feature 4 By filling the space between the light emitting surface of the light emitting diode unit 10 and the inner surface of the glass cover with a transparent heat insulating medium, heat can be efficiently radiated from the side surface of the light emitting diode unit 10. The light emitting diode lamp 20 having a longer life can be provided.

Effect of Feature 5 By using a silicone resin as the transparent and insulating thermally conductive medium, it is possible to secure higher electrical insulation and ensure electrical safety to the LED and wiring. In addition, the lamp appears brighter as the color of the lamp shifts to a higher color temperature.

Effect of Feature 6 By using a heat conductive medium having a transparent insulating property as a fluid having a density of 1.5 or more, heat is applied to a low temperature portion of the glass bulb 21 or the base 23 by convection of a fluid having a high heat capacity. The light-emitting diode lamp 20 that transmits and emits and has better heat dissipation efficiency can be provided.

Effect of Feature 7 Transparent, heat-conductive fluid with a density of 1.5 or more is a perfluorocarbon liquid that ensures electrical safety to LEDs and wiring, and emits light with better heat dissipation efficiency. A diode lamp 20 can be provided. In addition, the lamp appears brighter as the color of the lamp shifts to a higher color temperature.

Effect of Feature 8 The casing 24 including the glass cover is composed of a glass bulb, and an inert gas is sealed in the glass bulb 21,
In order to seal and seal the end of the glass bulb 21 where the lead-in wire 17 led out from the light emitting diode unit 10 is led out of the glass bulb 21, the housing 24 is bonded to the resin housing at the base of the glass bulb 21. It is not necessary to form the housing 24, the material cost can be reduced, and the housing 24 can be produced with existing HID lamp equipment. In addition, since the inert gas is sealed and hermetically sealed, the metal portion such as the lead-in wire 17 in the housing 24 can be prevented from being corroded, and has a waterproof structure and can be used outdoors. Furthermore, the heat conductive liquid medium can be filled without a special sealing structure such as packing.

Effect of Feature 9 Since the light emitting diode unit 10 is held by a support column embedded in the sealing portion side of the glass bulb 21, it is possible to provide a light emitting diode lamp 20 having a shape close to that of a conventional HID lamp.

Effect of Feature 10 The light-emitting diode 11 is mounted on a substrate, and the substrate is disposed on the side surface and the upper surface of the support member 13, so that the light-emitting diode unit 10 having a cylindrical bulb shape can be obtained. The light-emitting diode lamp 20 having a light distribution and shape close to those can be provided.

Effect of Feature 11 Since the light emitting diode 11 is directly mounted on the side surface and the upper surface of the support member 13, the light emitting diode substrate can be omitted, and the light emitting diode lamp 20 can be produced at a lower cost.

Effect of Feature 12 A screw-type metal base 23 is attached to the sealing end of the glass bulb 21, so that the light-emitting diode lamp 20 having substantially the same shape as a conventional HID lamp can be provided.

Effect of Feature 13 The light-emitting diode lamp 20 can be easily replaced with a lighting device such as a street light and a crime prevention light using a conventional HID lamp in combination with a lighting device. It is possible to provide lighting devices such as street lamps and crime prevention lamps that have long life and are highly energy-saving.

*** Second feature group ***
Features 1.
The light-emitting diode lamp 20 energizes a light-emitting diode unit 10 configured by disposing the light-emitting diodes 11 on a plurality of surfaces of the three-dimensional support member 13 and a transparent cylindrical bulb and the light-emitting diode unit 10. It is installed in a housing 24 formed with the base 23, and the wiring led from the light emitting diode unit 10 is led out of the housing 24 through the base 23.
The support member 13 has a polygonal column shape whose bottom surface is a regular polygon.
A circumscribed circle on the bottom surface of the regular polygon is arranged concentrically with the cylindrical valve.
A width w perpendicular to the axis of the polygonal column on the side of the polygonal column, a point extending perpendicularly to the polygonal column side from the center of the cross section of the cylindrical bulb, and a point intersecting the polygonal column side; The light-emitting diode lamp 20 obtains a desired bulb diameter when the distance Δk of the perpendicularly extending line intersecting the bulb inner surface is fixed and the regular polygon of the bottom surface of the polygonal column is a regular n-gon. For this purpose, the light emitting diode unit 10 having a polygonal prism composed of regular polygons in which the number of n is adjusted is provided.

Feature 2.
A light emitting diode unit 10 configured by arranging the light emitting diodes 11 on a plurality of surfaces of the three-dimensional support member 13 is formed by a transparent cylindrical bulb and a base 23 for energizing the light emitting diode unit 10. In the light-emitting diode lamp 20 that is installed in the housing 24 and leads out the wiring led from the light-emitting diode unit 10 to the outside of the housing 24 through the base 23, the support member 13 has a regular polygonal bottom surface. It has a prismatic shape, the circumscribed circle of the bottom surface of the regular polygon is arranged concentrically with the cylindrical bulb, and the light emitting diodes 11 are arranged in a line in the polygonal axial direction on the side surface of the polygonal column. It is characterized by that.

Feature 3.
The support member 13 is three-dimensional by bending a single plate to form a plurality of surfaces.

Feature 4.
A width w in a direction perpendicular to the axis of the polygonal column on the side surface of the polygonal column is 5 mm to 20 mm.

Feature 5.
A distance Δk between a point of a line extending perpendicularly to the polygonal column side surface from the center of the cross section of the cylindrical bulb and a point intersecting the polygonal column side surface and a point intersecting the valve inner surface of the vertically extended line is: It is characterized by being 1 mm to 6 mm.

Feature 6
The plurality of surfaces of the three-dimensional support member 13 also serve as a light emitting diode element substrate, and the light emitting diodes 11 are directly mounted on the outer surface of the support member 13.

Feature 7.
The light emitting diode unit 10 is a light emitting diode unit 10 configured by attaching a light emitting diode element substrate to a plurality of surfaces of the support member 13.

Feature 8
The light emitting diode element substrate has a substrate width of about 10 mm.

Feature 9
The light emitting diode element substrate is a ribbon-like flexible substrate 12.

Feature 10
The bottom surface of the polygonal column is a polygon in which some apexes of the regular n-prism are missing.

Feature 11.
The support member 13 is made of metal.

Feature 12.
The height of the polygonal column is higher than the diameter of the circumscribed circle.

Feature 13.
The top surface of the radiator is a polygonal pyramid or a trapezoidal polygonal longitudinal section in the central axis direction, and the light emitting diodes 11 are arranged on each surface of the polygonal pyramid.

Feature 14.
In the lighting fixture, the light emitting diode lamp 20 and the lighting device are arranged.

  The effects of the features of the light emitting diode lamp 20 are as follows.

Effect of Feature 1 The support member 13 has a polygonal column shape with a bottom surface of a regular polygon, a circumscribed circle of the bottom surface of the regular polygon is arranged concentrically with the cylindrical valve, and the axis of the polygonal column on the side surface of the polygonal column The width w of the vertical direction, the point of the line extending perpendicularly from the center of the cross section of the cylindrical bulb to the side of the polygonal column, the point intersecting the side of the polygonal column, and the point intersecting the inner surface of the valve of the line extending vertically When the distance Δk is fixed and the regular polygon on the bottom surface of the polygonal column is a regular n-gon, the polygonal light-emitting diode unit 10 is formed of a regular polygon in which the number of n is adjusted to obtain a desired bulb diameter. By using the light emitting diode lamp 20, the diameter of the glass bulb 21 and the brightness of the light emitting diode lamp 20 are maintained while keeping the width of the side surface of the polygonal column and the distance between the light emitting diode 11 arranged on the side surface and the inner surface of the glass bulb 21 constant. Change Even in this case, the parts can be shared and the manufacturing process can be made common, the heat of the light emitting diode 11 can be efficiently released to the glass bulb 21, and the lighting apparatus compatibility is high at a low cost and the life is long. The light emitting diode lamp 20 can be obtained.

Effect of Feature 2 The support member 13 has a polygonal column shape whose bottom surface is a regular polygon, the circumscribed circle of the bottom surface of the regular polygon is arranged concentrically with the cylindrical bulb, and the light emitting diode 11 is arranged on the side surface of the polygonal column. The number of side surfaces of the polygonal column can be easily adjusted by arranging the polygonal columns in a line in the axial direction, and the width of the side surface of the polygonal column can be obtained by obtaining the light-emitting diode lamp 20 having a desired bulb diameter. Even if the diameter of the glass bulb 21 and the brightness of the light-emitting diode lamp 20 are changed while keeping the distance between the light-emitting diode 11 disposed on the side surface and the inner surface of the glass bulb 21 constant, the components are shared and the manufacturing process is common. Therefore, the heat of the light-emitting diode 11 can be efficiently released to the glass bulb 21, and the light-emitting diode lamp 20 can be obtained at a low cost with high compatibility with a lighting fixture and with a long life. You can.

Effect of Feature 3 By forming a plurality of surfaces by bending the support member 13 as an integrated plate, a light-emitting diode lamp 20 that can achieve more common parts, a smaller number of parts, and a common manufacturing process can be obtained. I can do it.

Effect of Feature 4 By setting the width w in the direction perpendicular to the axis of the polygonal column on the side of the polygonal column to 5 mm to 20 mm, the light emitting diodes 11 are arranged in a line in the axial direction of the polygon on the side of the polygonal column. The number of side surfaces of the polygonal column can be easily adjusted, and by obtaining the light emitting diode lamp 20 having a desired bulb diameter, the width of the side surface of the polygonal column and the inner surface of the light emitting diode 11 and the glass bulb 21 disposed on the side surface are obtained. Even if the diameter of the glass bulb 21 and the brightness of the light emitting diode lamp 20 are changed while keeping the distance constant, the parts can be shared and the manufacturing process can be made common, and the heat of the light emitting diode 11 can be transferred to the glass bulb 21. The light-emitting diode lamp 20 that can be efficiently escaped, has a low cost, is highly compatible with a luminaire, and has a long life can be obtained.

Effect of Feature 5: A point extending perpendicularly to the polygonal column side surface from the center of the cross section of the cylindrical bulb intersects the polygonal column side surface, and a point intersecting the valve inner surface of the vertically extended line By making the distance Δk of 1 mm to 6 mm, the light emitting diode unit 10 can be easily inserted into the glass bulb 21 with good yield, and the heat of the light emitting diode 11 can be efficiently released to the glass bulb 21. Thus, it is possible to obtain the light-emitting diode lamp 20 that is low in cost, highly compatible with a luminaire, and has a long life.

Effect of Feature 6 A plurality of three-dimensional surfaces of the support member 13 also serve as a light-emitting diode element substrate, and the light-emitting diode substrate can be omitted by directly mounting the light-emitting diode 11 on the outer surface of the support member 13. The light emitting diode lamp 20 can be produced at low cost.

Effect of Feature 7 The light emitting diode unit 10 can use an existing general light emitting diode element substrate by attaching the light emitting diode element substrate to a plurality of surfaces of the support member 13.

Effect of Feature 8 By setting the substrate width of the light emitting diode element substrate to about 10 mm, it is possible to use a more general light emitting diode element substrate that is currently available.

Effect of Feature 9 Since the light-emitting diode element substrate is the ribbon-shaped flexible substrate 12, a more general light-emitting diode element substrate currently available can be used.

Effect of Feature 10 Since the bottom surface of the polygonal column is a polygon from which some apexes of the regular n-prism are missing, the light emitting diode unit 10 can be obtained in accordance with a special instrument shape and special light distribution. .

Effect of Feature 11 Since the support member 13 is made of metal, it can efficiently absorb and dissipate heat generated by the light emitting diode 11.

Effect of Feature 12 Since the height of the polygonal column is higher than the diameter of the circumscribed circle, the heat generated by the light emitting diode 11 can be efficiently radiated.

Effect of Feature 13 The top surface of the radiator has a polygonal pyramid shape or a trapezoidal polygonal pyramid shape, and the light-emitting diodes 11 are arranged on each surface of the polygonal pyramid shape so that light distribution at the top of the lamp is omnidirectional. Can be made.

Effect of Feature 14 The light-emitting diode lamp 20 can be easily replaced with a lighting device such as a street light and a crime prevention light using a conventional HID lamp in combination with a lighting device. It is possible to provide street lamps and crime prevention lights that have long life and are highly energy efficient.

  In addition, since the light distribution has no directionality and the light from the light emitting diode 11 is distributed in almost all directions, it can be used not only for a substantially horizontally-lit street lamp that is mainly irradiated on the lower surface, but also for base-down and base-up fixtures. Is also available.

  DESCRIPTION OF SYMBOLS 10 Light emitting diode unit, 11 Light emitting diode, 12 Flexible board, 13 Support member, 14 Base support | pillar, 15 Axis support | pillar, 16 Connection support | pillar, 17 Lead wire, 18 Cone, 20 Light emitting diode lamp, 21 Glass bulb, 22 Flare tube, 23 base, 24 box.

Claims (15)

A light emitting diode unit in which a light emitting diode is mounted on a side surface of a prismatic support member and a cone surface disposed on the top of the support member;
A cover for covering the light emitting surface of the light emitting diode unit ;
The support member has n side surfaces formed in a state where one aluminum plate is bent along a fold line parallel to the axial direction of the support member,
A light emitting diode lamp in which a ribbon-like flexible substrate on which the light emitting diode is mounted is arranged on each of the n side surfaces . The axial height of the support member of the light emitting diode unit is 1.5 to 3.5 times the diameter of the circumscribed circle of the support member,
The light emitting diode according to claim 1, wherein the inner surface of the cover and a light emitting diode mounted on a side surface of the support member are in contact with each other, or the inner surface of the cover and the light emitting diode are close to each other within 5 mm. lamp. The cover has a hemispherical or dome-shaped cover top,
The angle formed between the side surface of the support member and the surface of the cone is an angle corresponding to a radius R of the cover top, and the cone is adapted to a hemispherical or dome-shaped top. Or the light emitting diode lamp of 2.   4. The light-emitting diode lamp according to claim 1, wherein a distance Δk from a center of one side surface of the support member to an inner surface of the cover in a cross section of the light-emitting diode lamp is 1 mm or more and 6 mm or less.   5. The light-emitting diode lamp according to claim 1, wherein the cone has a polygonal pyramid shape or a polygonal pyramid shape having a trapezoidal longitudinal cross section in the axial direction.   6. The light-emitting diode lamp according to claim 1, wherein a single ribbon-like flexible substrate on which a light-emitting diode is mounted is disposed from a side surface of the support member to a surface of the cone.   The light emitting diode lamp according to any one of claims 1 to 6, wherein a space between the light emitting surface of the light emitting diode unit and the inner surface of the cover is filled with a transparent and insulating heat conducting medium.   The light emitting diode lamp according to claim 7, wherein the heat conducting medium is a silicone resin. In the manufacturing method of the light emitting diode unit in which the light emitting diode is mounted on the side surface of the n-prism-shaped support member,
Adhere n ribbon-shaped flexible substrates with light emitting diodes on one aluminum plate,
One aluminum plate to which the flexible substrate is bonded is bent along a fold line parallel to the axial direction of the support member to form n side surfaces of the support member, and the ribbon is formed on each side surface of the n side surfaces. Of a light emitting diode unit in which a flexible substrate is disposed. In a method of manufacturing a light emitting diode unit in which a light emitting diode is mounted on a side surface of an n prismatic support member and a surface of an n pyramid cone disposed on the top of the support member,
One aluminum plate is bent along a fold line parallel to the axial direction of the support member to form n side surfaces of the support member,
A method for manufacturing a light emitting diode unit, wherein the one aluminum plate is bent along a fold line perpendicular to the axial direction of the support member to form n surfaces of the cone. Before bending the single aluminum plate, a ribbon-like flexible member having a width w or less in which a light emitting diode is mounted from the side surface of the supporting member of the single aluminum plate to the surface of the cone. Glue the board,
The manufacturing method of the light emitting diode unit of Claim 10 which bent the aluminum plate which adhere | attached the said flexible substrate with the width w, and formed the n side surface of the said supporting member.   The manufacturing method of the light emitting diode unit of Claim 11 which bent the part used as the top part of the said supporting member of the said 1 sheet of aluminum with the said flexible substrate, and formed the n surface of the said cone.   A light emitting diode unit in which a light emitting diode is mounted on a side surface of a prismatic support member and a cone surface disposed on the top of the support member;
  A cover that covers a light emitting surface of the light emitting diode unit;
With
  Side surfaces of the support member are formed in a state where one aluminum plate is bent along a fold line parallel to the axial direction of the support member, and the one aluminum plate is orthogonal to the axial direction of the support member. A light-emitting diode lamp in which the surface of the cone is formed in a state of being bent along a folding line.   One ribbon-like flexible substrate on which a light emitting diode is mounted is disposed from the side surface of the support member to the surface of the cone.
  The side surface of the support member has a width w,
  The light emitting diode lamp according to claim 1 or 13, wherein the flexible substrate has a width w or less.   The light emitting diode lamp according to claim 1 or 14, wherein the flexible substrate is bent from a side surface of the support member to a surface of the cone, along a fold line perpendicular to an axial direction of the support member.

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