JP6157540B2 - Lighting lamp - Google Patents

Description

  The present invention relates to an illumination lamp. The present invention particularly relates to an illumination lamp including a base and a tube.

  An illumination lamp including a base and a tube is known (for example, Patent Document 1).

JP2012-142169A JP 2010-212043 A JP 2010-211289 A JP 2003-100141 A Microfilm of Japanese Utility Model No. 51-15777 (Japanese Utility Model Publication No. 52-107678)

  In the illumination lamp, the tube and the base are fitted. Therefore, it is necessary to manufacture a base corresponding to the diameter of the cylindrical tube for each diameter of the cylindrical tube.

  For example, the main object of the present invention is to obtain an illumination lamp in which a base is commonly used regardless of the diameter of the tube.

The illumination lamp according to the present invention is
A base having an inner diameter A,
A cylindrical tube whose inner diameter is B smaller than the inner diameter A of the base;
A heat sink disposed inside the tube,
An annular portion A to which the base is fitted is provided on one end side, and an annular portion B to which the tubular tube is fitted is provided on the other end side, and
The ring is
The annular portion A is formed with an outer diameter α equal to or less than the inner diameter A of the base, and the annular portion B is formed with an outer diameter β equal to or less than the inner diameter B of the cylindrical tube ;
The base is fixed to the heat sink, and the ring is fixed between the base and the heat sink .

  In the illumination lamp according to the present invention, a ring is fitted to the base, and a tube is fitted to the ring. Therefore, it is possible to obtain an illumination lamp that is commonly used as a base.

FIG. 3 shows the first embodiment and shows an example of the appearance of an illumination lamp. FIG. 5 shows the first embodiment and is a perspective view showing an example of the appearance of an illumination lamp. FIG. 5 shows the first embodiment and shows an example of the structure of an illumination lamp. FIG. 5 shows the first embodiment and shows an example of the structure of a heat sink. FIG. 5 shows the first embodiment, and shows a fitting state of an illumination lamp using a ring. FIG. 5 shows the first embodiment and is a plan view showing an example of the appearance of an illumination lamp using a ring. FIG. 5 shows the first embodiment and is a front view showing an example of the appearance of an illumination lamp using a ring. FIG. 5 shows the first embodiment and is a front sectional view showing an example of the appearance of an illumination lamp using a ring. FIG. 5 shows the first embodiment and is a cross-sectional plan view showing an example of the appearance of an illumination lamp using a ring. The figure which shows Embodiment 1 and is a figure which shows the state of the fitting of the illumination lamp which does not use a ring. FIG. 5 shows the first embodiment and shows an example of the appearance of a power supply base. FIG. 5 shows the first embodiment, and is a first cross-sectional view showing an example of the internal structure of the power supply cap. FIG. 5 shows the first embodiment, and is a second cross-sectional view showing an example of the internal structure of the power supply cap. FIG. 5 shows the first embodiment, and is a third cross-sectional view showing an example of the internal structure of the power supply cap. FIG. 5 shows the first embodiment and is a diagram showing an example of the appearance of an earth cap. FIG. 3 shows the first embodiment, and is a first cross-sectional view showing a first example of the internal structure of the ground cap. FIG. 5 shows the first embodiment, and is a second cross-sectional view showing a first example of the internal structure of the ground cap. FIG. 5 shows the first embodiment, and is a first cross-sectional view showing a second example of the internal structure of the ground cap. FIG. 5 shows the first embodiment, and is a second cross-sectional view showing a second example of the internal structure of the ground cap. FIG. 5 shows the first embodiment and shows an example of a structure of a cylindrical tube. FIG. 5 shows the first embodiment, and shows an example of the structure of a heat sink and a cylindrical tube. Fig. 5 shows the first embodiment, and shows an external appearance of a first example of a ring. FIG. 5 shows the first embodiment, and is a cross-sectional view of a first example of a ring. Fig. 5 shows the first embodiment, and shows a state before fitting of an illumination lamp using the ring of the first example. Fig. 5 shows the first embodiment, and shows a state after the illumination lamp using the ring of the first example is fitted. The figure which shows Embodiment 1 and the figure which shows the state after the fitting of the illumination lamp using the ring of a 2nd example. Fig. 5 shows the first embodiment, and shows a third example of a ring. Fig. 5 shows the first embodiment, and is a cross-sectional view of a third example of a ring. Fig. 5 shows the first embodiment, and is a cross-sectional view of a third example of a ring. Fig. 5 shows the first embodiment, and shows a state before fitting of an illumination lamp using a ring of a third example. It is a figure which shows Embodiment 1, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 3rd example. Fig. 10 shows the second embodiment, and shows a fourth example of a ring. It is a figure which shows Embodiment 2, and is a figure which shows the state before the fitting of the illumination lamp using the ring of a 4th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 4th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 5th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 6th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 7th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of an 8th example. It is a figure which shows Embodiment 2, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 9th example. FIG. 9 shows the third embodiment and shows an example of a structure of a cylindrical tube. It is a figure which shows Embodiment 3, and is a figure which shows the state before the fitting of the illumination lamp using the ring of a 10th example. It is a figure which shows Embodiment 3, and is a figure which shows the state after the fitting of the illumination lamp using the ring of a 10th example. FIG. 9 shows the third embodiment and shows an example of a structure of a cylindrical tube.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment, the directions such as “up”, “down”, “left”, “right”, “front”, “back”, “front”, “back” are However, it is not intended to limit the arrangement or orientation of devices, instruments, parts, or the like.

Embodiment 1 FIG.
(Appearance of lighting lamp)
FIG. 1 is a diagram showing an example of the appearance of an illumination lamp.
FIG. 2 is a perspective view showing an example of the appearance of the illumination lamp.

  In the first embodiment, a straight tube type lamp, such as an LED (light emitting diode) lamp, will be described as an example of the illumination lamp 100. However, the type of light emitting element of the illumination lamp 100 is not limited to the LED. .

The illumination lamp 100 includes a cylindrical power supply base 50, a cylindrical earth base 80, and a cylindrical pipe 60. The power supply base 50 and the ground base 80 are examples of the base.
The tube 60 has translucency. The tube 60 only needs to transmit the light of the LED that emits light inside the tube 60.
The material of the tube 60 is resin (for example, polycarbonate) or glass.

  The power supply base 50 includes a base case 51, a power supply terminal 70a, and a power supply terminal 70b. That is, the power supply cap 50 is a pin cap. The power supply cap 50 is not limited to the pin cap.

The ground cap 80 includes a base housing 81 and a ground terminal 82 (GND terminal, ground terminal).
The base casing 51 and the base casing 81 are, for example, resin (insulating resin such as PBT (polybutylene terephthalate), PET (polyethylene terephthalate), LCP (liquid crystal polymer)), and the power supply terminal 70a and the power supply terminal 70b. The ground terminal 82 is, for example, metal.

  The total length L of the illumination lamp 100 is, for example, 1212.6 mm.

  FIG. 2 is a perspective view of the power supply base 50 and the ground base 80.

  In the first embodiment, the fitting between the ring (described later), the power supply base 50 (the base casing 51), and the cylindrical pipe 60 will be described. The same applies to the case. Therefore, the description of the fitting between the ring, the ground base 80 (base housing 81), and the tubular tube 60 is omitted except for a part thereof.

(Internal structure of lighting lamp)
FIG. 3 is a diagram illustrating an example of the structure of an illumination lamp.
Here, the plan view of FIG. 3 and the AA cross-sectional view show a state immediately before the power supply cap 50 and the ring 30 of the illumination lamp 100 are fitted and the power supply cap 50 is about to be attached to the tube 60. Indicates.
In addition, in the top view of FIG. 3, the ring 30 shows the state seen through. Further, in the AA cross-sectional view of FIG. 3, the substrate 90, the heat sink 95, and the LED 97 are also shown in cross-section, but the hatching indicating the cross-section is omitted for easy understanding of the drawing. The same applies to the subsequent drawings.
Moreover, in FIG. 3, the cylindrical tube 60 and the ring 30 are shown in a simplified manner (the same applies to FIG. 5 described later). Details of the structure of the tube 60 and the ring 30 will be described later.

As shown in FIG. 3, the illumination lamp 100 includes a substrate 90, a heat sink 95, and a ring 30.
The ring 30 may be made of the same material as that of the tubular tube 60 or may be made of the same material as that of the base casing 51. And the ring 30 may have translucency and does not need to have translucency.
One or more LEDs 97 are mounted on the substrate 90. The substrate 90 includes a power feeding land 98a and a power feeding land 98b.

The power supply cap 50 includes a joint portion 71a and a joint portion 71b.
The joint portion 71a and the power supply terminal 70a are integrally formed from, for example, a single metal plate as a power supply portion that supplies power, and are electrically connected. Similarly, the joint portion 71b and the power feeding terminal 70b are integrally formed as a power feeding portion that supplies power, and are electrically connected.

The power supply base 50 is fitted with the ring 30. And the junction part 71a and the electric power feeding land 98a of the electric power feeding cap 50 with which the ring 30 was fitted are electrically connected to the joint part 71b and the electric power feeding land 98b.
Specifically, the tip of the joint 71a is soldered to the power feeding land 98a, and the tip of the joint 71b is soldered to the power feeding land 98b.

The power supplied to the power supply terminal 70a is supplied to the power supply land 98a, and the power supplied to the power supply terminal 70b is supplied to the power supply land 98b. Then, the electric power supplied to the power supply land 98a and the power supply land 98b is supplied to the LED 97 via, for example, a rectifier circuit or an inverter circuit of the substrate 90.
Note that illustration of circuits and wiring such as a rectifier circuit and an inverter circuit is omitted.

Here, the joint portion 71a may not be provided. For example, the power supply terminal 70a and the power supply land 98a may be connected via a lead wire. Similarly, the joint portion 71b may not be provided. For example, the power supply terminal 70b and the power supply land 98b may be connected via a lead wire.
Moreover, although the front-end | tip of the power supply terminal 70a and the power supply terminal 70b is L-shaped, the shape of the power supply terminal 70a and the power supply terminal 70b is not limited.

  A substrate 90 is attached to the heat sink 95, and heat of the substrate 90 (heat generated by the LED 97 and the circuit) is absorbed by heat conduction, and the absorbed heat is radiated. Here, the heat sink 95 is disposed inside the cylindrical tube 60 so as to extend in the longitudinal direction. The substrate 90 is also arranged so as to extend in the longitudinal direction of the tube 60.

  3, the base casing 51 has a screw hole 52, and the heat sink 95 has a screw hole 96.

The power supply base 50 (base housing 51) is fixed to the end of the heat sink 95. More specifically, the base casing 51 is screwed to the heat sink 95 with screws 99.
3, the ring 30 is fixed between the base housing 51 and the heat sink 95.

(Structure of heat sink)
FIG. 4 is a diagram illustrating an example of the structure of the heat sink.
The heat sink 95 is a heat radiator for radiating heat generated by the LED 97 and a circuit (rectifier circuit or inverter circuit), and is made of a material having good thermal conductivity.
As described above, the heat sink 95 has the screw hole 96.
The cross-sectional shape of the heat sink 95 is semicircular as shown in the right side view of FIG.
The heat sink 95 includes an alignment portion 94a and an alignment portion 94b. The alignment unit 94a and the alignment unit 94b will be described later.

(About the outline of mating)
FIG. 5 is a diagram showing a fitting state of an illumination lamp using a ring.
FIG. 6 is a plan view showing an example of the appearance of an illumination lamp using a ring.
FIG. 7 is a front view showing an example of the appearance of an illumination lamp using a ring.
FIG. 8 is a front sectional view showing an example of the appearance of an illumination lamp using a ring.
FIG. 9 is a plan sectional view showing an example of the appearance of an illumination lamp using a ring.
FIG. 10 is a diagram illustrating a fitting state of an illumination lamp that does not use a ring.

FIG. 5 shows a state in which the cylindrical tube 60 of FIG. 3 is fitted to the ring 30.
Although details will be described later, for example, when the tube 60 and the power supply cap 50 cannot be directly fitted, by using the ring 30, it is possible to form a substantially sealed state by the tube 60 and the cap housing 51. It is.

5, illustration of the screw hole 52, the screw hole 96, and the screw 99 shown in FIG. 3 is omitted, and the alignment pin 58a of the power supply base 50 and the alignment portion 94a of the heat sink 95 are illustrated. (In actuality, the alignment pin 58a and the alignment portion 94a are not shown on the AA cross section of FIG. 3, and are shown by dotted lines).
By aligning the alignment pin 58a and the alignment portion 94a, the base housing 51 and the heat sink 95 are aligned. (Same for the alignment pin 58b and the alignment portion 94b).

And the top view which shows the external appearance of the illumination lamp 100 fitted using the ring 30 like FIG. 5 is FIG. 6, and a front view is FIG.
6 and 7, both the power supply base 50 side and the ground base 80 side are shown.
As shown in FIG. 6, gaps D are formed between the tube 60 and the power supply cap 50, and between the tube 60 and the ground cap 80, and the ring 30 is exposed from the gap D.
The gap D is, for example, 1 mm. The gap D includes the length (cylinder tube length: 1175.7 mm) of the entire length L (for example, 1212.6 mm) of the illumination lamp 100 and the lengths of the exposed portions of the power supply base 50 and the ground base 80 (cap length). : Both the power supply base 50 and the ground base 80 are, for example, 17.45 mm), and further divided by 2.

Further, FIG. 8 shows the XX cross section of FIG. 6, and FIG. 9 shows the YY cross section of FIG.
8 is the same as that of FIG. 5, but the illustration of the heat sink 95, the alignment portion 94a, the substrate 90, and the LED 97 is omitted (the same applies to FIG. 9). ).
Moreover, although mentioned later for details, the cylinder pipe 60 has the rail 64a and the rail 64b.
As described above, the fitting of the ring 30 with the grounding cap 80 and the tube 60 is the same as the fitting of the ring 30 with the power supply cap 50 and the tube 60.

On the other hand, for example, as shown in FIG. 10, when the outer diameter of the end of the tube 60 a is narrow (neck forming) and the tube 60 a and the power supply cap 50 can be directly fitted, the ring 30 May not be used.
That is, the cylindrical tube 60 of FIG. 5 and the cylindrical tube 60a of FIG. 10 have different shapes, but the power supply cap 50 can be used in common.
Here, the cylindrical tube 60a is made of, for example, glass, and the aforementioned cylindrical tube 60 is made of resin. The power supply cap 50 can be used in common by the resin tube 60 and the glass tube 60a.
In other words, the power supply cap 50 manufactured for directly fitting the cylindrical tube 60a of FIG. 10 can be commonly used for the cylindrical tube 60 of FIG.

10, the illustration of the screw hole 52, the screw hole 96, and the screw 99 shown in FIG. 3 is omitted, and the alignment pin 58a of the power supply cap 50 and the alignment portion 94a of the heat sink 95 are omitted. (In actuality, the alignment pin 58a and the alignment portion 94a are not shown on the AA cross section of FIG. 3, and are shown by dotted lines).
Similar to the example of FIG. 5, the positioning of the base casing 51 and the heat sink 95 is performed by fitting the positioning pin 58a and the positioning portion 94a. (Same for the alignment pin 58b and the alignment portion 94b).

(Structure of the power supply base) FIG. 11 is a diagram illustrating an example of the appearance of the power supply base.
FIG. 12 is a first cross-sectional view illustrating an example of the internal structure of the power supply cap.
FIG. 13 is a second cross-sectional view showing an example of the internal structure of the power supply cap.
FIG. 14 is a third cross-sectional view showing an example of the internal structure of the power supply cap.

12 is a cross-sectional view (plan view) taken along the line BB shown in FIG.
FIG. 13 is a cross-sectional view (front view) of CC section shown in FIG.
FIG. 14 is a cross-sectional view (front view) of the DD section shown in FIG.

  As shown in FIG. 11, the power base 50 is integrated with the base housing 51 with a first power feeding section composed of a power feeding terminal 70 a and a joint 71 a and a second power feeding section composed of a power terminal 70 b and a joint 71 b. Molded. That is, the portion other than the power feeding portion of the power feeding base 50 is the base housing 51. The base casing 51 is molded by resin molding or the like, and the power feeding portion is embedded in the base casing 51 at the time of molding.

The base 51 is cylindrical and has an opening in the inner direction of the illumination lamp 100, and a lid 54 is provided in the outer direction of the illumination lamp 100.
As shown in the right side view, the lid portion 54 has a disc shape, and includes a thick portion 55 and a thin portion 56. As shown in the cross-sectional view described later, the thin portion 56 has a thinner wall thickness (the wall thickness is also referred to as “thickness”) than the thick portion 55.

The thick portion 55 has a strip shape formed with a predetermined width as shown in the right side view. The predetermined width of the thick portion 55 is larger than the width of the power supply terminal in the vertical direction.
Moreover, as shown in the right side view, the thin portion 56 has a semicircular shape.

  The first feeding part (feeding terminal 70a) and the second feeding part (feeding terminal 70b) are arranged in plane symmetry with respect to a plane (CC plane in the right side view) passing through the center of the base casing 51. Is done.

The base casing 51 has the above-described alignment pin 58a and alignment pin 58b.
Further, the base casing 51 has a fixing portion 59 having an annular surface as shown in the left side view.
Further, as shown in the left side view, the outer peripheral portion of the base case 51 becomes an end face 49 of the base case 51.

  Next, description will be given based on the cross section of the power supply cap 50 with reference to FIGS. 12 to 14.

As shown in FIGS. 12 to 14, the base casing 51 is formed in a cylindrical shape by a side wall 57. In other words, the base casing 51 has a cylindrical side wall 57.
And one end (right side of FIGS. 12-14) of a cylindrical shape is covered with the disk-shaped cover part 54, and the other end (left side of FIGS. 12-14) is opened.
As shown in FIG. 13 and FIG. 14, the lid portion 54 (the base casing 51) includes a thick portion 55 and a thin portion 56 that is thinner than the thick portion 55.

  The base case 51 has a fixing portion 59 that protrudes from the inner wall surface of the side wall 57 toward the center of the tube from the lid portion 54 to the middle of the side wall 57.

Then, as shown in FIG. 12, the outer diameter of the base casing 51 is “X”, and the inner diameter (inner diameter of the base) of the base casing 51 formed by the inner wall of the side wall 57 is “A”.
Furthermore, the inner diameter formed by the inner wall of the fixed portion 59 (the inner diameter of the fixed portion) is “C”.
As described above, the fixing portion 59 has an annular surface, and the inner diameter C of the annular surface is smaller than the inner diameter A of the base casing 51. The inner diameter A of the base casing 51 is equal to the outer diameter of the annular surface of the fixing portion 59.

  Further, as shown in FIG. 13, even if the first feeding portion is integrally formed by the feeding terminal 70 a, the joint portion 71 a, and the body portion 73 a, and the first feeding portion penetrates the lid portion 54 of the base casing 51. Good. Moreover, the trunk | drum 73a may have the U-shaped notch part 75a (a 2nd electric power feeding part is the same).

  Furthermore, as shown in FIG. 14, the base case 51 has a protruding portion 53 that protrudes from the lid portion 54 in the opening direction. The protruding portion 53 is formed in a semi-cylindrical shape from the back surface of the thin portion 56 of the lid portion 54. And the cross section of the protrusion part 53 becomes semicircle shape.

  The protrusion 53 has the above-described screw hole 52 in the tube axis direction. When the base housing 51 is fixed to the heat sink 95, the protrusion 53 is attached to the heat sink 95 with screws 99 so that the end surface in the opening direction of the protrusion 53 of the base housing 51 contacts the end surface of the heat sink 95. Screwed (FIG. 3).

(Earth cap structure)
FIG. 15 is a diagram showing an example of the appearance of the ground cap.
FIG. 16 is a first cross-sectional view showing a first example of the internal structure of the ground cap.
FIG. 17 is a second cross-sectional view showing a first example of the internal structure of the ground cap.
FIG. 18 is a first cross-sectional view showing a second example of the internal structure of the ground cap.
FIG. 19 is a second cross-sectional view showing a second example of the internal structure of the ground cap.

FIG. 16 is a partial cross-sectional view (plan view) of the EE portion shown in FIG. 15 in the grounding cap 80 of the first example.
FIG. 17 is a partial cross-sectional view (front view) of the FF portion shown in FIG. 15 in the grounding cap 80 of the first example.
FIG. 18 is a partial cross-sectional view (plan view) of the EE portion shown in FIG. 15 in the grounding cap 80 of the second example.
FIG. 19 is a partial cross-sectional view (front view) of the FF portion shown in FIG. 15 in the ground base 80 of the second example.

Here, the earth base 80 will be briefly described.
As shown in FIG. 15, the ground base 80 is obtained by integrally molding a ground terminal 82 with a base housing 81. That is, the portion other than the ground terminal 82 in the ground base 80 is the base housing 81. The base casing 81 is molded by resin molding or the like, and the ground terminal 82 is embedded in the base casing 81 at the time of molding.

The base casing 81 has a cylindrical shape, and similarly to the base casing 51, the inner direction of the illumination lamp 100 is opened, and a lid portion 54 a is provided in the outer direction of the illumination lamp 100.
And as shown to a left view, the cover part 54a is disk shape.

Similarly to the base case 51, the base case 81 includes an alignment pin 58c, an alignment pin 58d, and a screw hole 52a.
Further, the base casing 51 has a fixing portion 59a having an annular surface as shown in the right side view.

  Next, description will be given based on the cross section of the ground cap 80 with reference to FIGS.

As shown in FIG. 16, the base casing 81 has a cylindrical shape with a side wall 57a. In other words, the base casing 81 has a cylindrical side wall 57a.
One end of the tube (left side in FIG. 16) is covered with a disc-shaped lid 54a, and the other end (right side in FIG. 16) is opened.
Similarly to the lid portion 54, the lid portion 54a includes a thick portion 55a and a thin portion 56a that is thinner than the thick portion 55a.

  The base casing 81 has a fixing portion 59a protruding from the inner wall surface of the side wall 57a toward the center of the tube from the lid portion 54a to the middle of the side wall 57a.

Similarly to the base casing 51, the outer diameter of the base casing 81 is “X”, and the inner diameter of the base casing 81 (inner diameter of the base) is “A”.
Furthermore, the inner diameter formed by the inner wall of the fixed portion 59a (the inner diameter of the fixed portion) is “C”.

The outer diameter X of the base casing 81 of the ground base 80 and the outer shape X of the base casing 51 of the power supply base 50 are preferably equal, but may be different.
The inner diameter A of the base casing 81 and the inner diameter A of the base casing 51 are preferably equal, but may be different.
The inner diameter C of the base casing 81 and the inner diameter C of the base casing 51 are preferably equal, but may be different.

  Further, similarly to the base casing 51, the base casing 81 has a protruding portion 53 a that protrudes from the lid portion 54 a toward the opening direction. The protruding portion 53a is formed in a semi-cylindrical shape from the back surface of the thin portion 56a of the lid portion 54a. And the cross section of the protrusion part 53a becomes semicircle shape.

  As shown in FIG. 17, the protrusion 53a has the aforementioned screw hole 52a in the tube axis direction. When the base housing 81 is fixed to the heat sink 95, the protruding portion 53 a is in contact with the end surface of the heat sink 95 so that the end surface of the projecting portion 53 a of the base housing 81 is in contact with the end surface of the heat sink 95, similarly to the base housing 51. Screwed in with screws.

As shown in FIGS. 16 and 17, the ground terminal 82 may protrude from the inner side of the base casing 81 to the middle of the flat portion of the side wall 57a.
As shown in FIGS. 18 and 19, the ground terminal 82 may protrude from the inside of the base casing 81 to the vicinity of the boundary between the flat portion and the oblique portion of the side wall 57a.

(Cylinder tube structure)
FIG. 20 is a diagram illustrating an example of the structure of a cylindrical tube.
The cylindrical tube 60 has an inner diameter B formed by the inner wall 61.
Moreover, the cylindrical tube 60 has the rail 64a and the rail 64b which protruded from the inner wall surface in the longitudinal direction.
The outer diameter of the tube 60 is “Y”.

FIG. 21 is a diagram illustrating an example of the structure of the heat sink and the cylindrical tube.
The heat sink 95 to which the substrate 90 is attached is inserted into the cylindrical tube 60 so that the recessed portion of the heat sink 95 is in contact with the rail 64a and the rail 64b of the cylindrical tube 60.
That is, the rail 64a and the rail 64b have a role of fixing the heat sink 95.

(Ring structure)
FIG. 22 is a diagram showing the appearance of the first example of the ring.
The ring 30 has an annular part A31 and an annular part B32. Here, the annular portion A31 is a cap-side annular portion, and the annular portion B32 is a tube-tube-side annular portion. The annular portion B32 has a notch 37a and a notch 37b. That is, the annular portion B32 has a plurality of (two) notches.
The outer diameter of the annular portion A31 is “α”, and the outer diameter of the annular portion B32 is “β”.
In the example of FIG. 22, the outer diameter α of the annular portion A31 is equal to the outer diameter β of the annular portion B32.

The ratio between the total length L of the illumination lamp 100 (FIG. 1) and the length E of the ring 30 in the tube axis direction is, for example, L: E = 11212.6: 9.5 = about 121: 1.
The ratio of the length E of the ring 30 in the tube axis direction to the outer diameter α or the outer diameter β is, for example, α (= β): E = 22.7: 9.5 = about 23:10. The ratio of the length 30 in the tube axis direction of the ring 30 to the notch length F of the notch 37a (notch 37b) is, for example, E: F = 9.5: 4.8 = about 2: 1. It is. The ratio of the notch length F of the notch 37a (notch 37b) and the notch width G of the notch 37a (notch 37b) is, for example, F: G = 4.8: 1.8 = about 5 : 2.

FIG. 23 is a cross-sectional view of a first example of a ring.
FIG. 23 is a cross-sectional view taken along line HH in the left side view of FIG.
The ring 30 has an inner wall 35.
In the inner wall 35 of the ring 30, the above-described protrusion 53 of the base casing 51, the trunk 73a, and the like are accommodated. Therefore, as long as these protrusions 53, the trunk portion 73a, and the like can be accommodated, the wall thickness (wall thickness) of the ring 30 is not limited, and the shape of the inner wall 35 is not limited.

(First example of fitting of tube, ring and base)
FIG. 24 is a diagram showing a state before the fitting of the illumination lamp using the ring of the first example.
FIG. 25 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the first example.

24 to 25 show cross sections taken along the line AA in FIG. Further, the power supply base 50 shows only the side wall 57, the fixing part 59, and the lid part 54 of the base case 51. Further, the illustration of the substrate 90 is also omitted.
The following drawings used for explaining other examples of fitting of the tube, the ring, and the base are the same.

  The dimension of each part is demonstrated using FIG. First, the annular portion A31 has an outer diameter α that is equal to or smaller than the inner diameter A of the base casing 51.

  For example, when the outer diameter α of the annular portion A31 and the inner diameter A of the base casing 51 are processed with high accuracy, the outer diameter α of the annular portion A31 and the inner diameter A of the base casing 51 may be equal.

On the other hand, when the ring 30 and the base casing 51 have manufacturing variations in the respective dimension values, the manufacturing variations need to be taken into consideration.
For example, the manufacturing variation of the outer diameter α of the annular portion A31 is “± d1”, and the manufacturing variation of the inner diameter A of the base casing 51 is “± d2.” At this time, in order that the annular portion A31 and the base case 51 can be fitted, it is necessary that “the outer diameter α + d1 of the annular portion A31 ≦ the inner diameter A−d2 of the base case 51”. Here, when the sum (d1 + d2) of the upper limit d1 of the manufacturing variation of the outer diameter α of the annular portion A31 and the lower limit d2 of the manufacturing variation of the inner diameter A of the base casing 51 is defined as a manufacturing margin, “the outer diameter α ≦ the annular portion A31 ≦ In other words, the inner diameter A of the base casing 51—the manufacturing margin.
That is, the outer diameter α of the annular portion A31 may be equal to or less than the value obtained by subtracting the manufacturing variation (manufacturing margin) between the outer diameter α and the inner diameter A from the inner diameter A of the base casing 51.

Further, when the ring 30 and the base casing 51 are made of a material that is deformed (for example, thermally expanded) by a temperature change, such as a resin, the temperature change between the outer diameter α of the annular portion A31 and the inner diameter A of the base casing 51. A deformation margin (temperature change margin) may be included.
In other words, “the outer diameter α of the annular portion A31 ≦ the inner diameter A of the base casing 51—the manufacturing margin—the temperature change margin” may be satisfied.
In the case where it is not necessary to consider the manufacturing margin, “the outer diameter α of the annular portion A31 ≦ the inner diameter A of the base casing 51—the temperature change margin” may be satisfied.

The annular portion B32 has an outer diameter β equal to or smaller than the inner diameter B of the cylindrical tube 60.
Although the detailed description is omitted because it is the same as described above, the relationship between the outer diameter β of the annular portion B32 and the inner diameter B of the tubular tube 60 is also the same as the outer diameter α of the annular portion A31 and the inner diameter A of the cap casing 51. Similarly to the above relationship, a manufacturing margin and a temperature change margin may be taken into consideration. Further, the outer diameter β of the annular portion B32 and the inner diameter B of the cylindrical tube 60 may be equal.

In the example of FIG. 24, the outer diameter α of the annular portion A31 is equal to the outer diameter β of the annular portion B32 (the same outer diameter).
For example, when the base casing 51 and the tube 60 are made of the same material, the temperature change margin is the same, so the inner diameter A of the base casing 51 and the inner diameter B of the tube 60 may be the same. . For example, when the base casing 51 and the tube 60 are made of different materials, the inner diameter A of the base casing 51 and the inner diameter B of the tube 60 may be different because the temperature change margins are different.
Also, the outer diameter Y of the tube 60 and the outer diameter X of the base casing 51 may be the same or different. For example, if the difference between the outer diameter Y of the tubular tube 60 and the outer diameter X of the base casing 51 is 1 mm or less, the step between the cylindrical pipe 60 and the base casing 51 cannot be visually recognized. .

Further, focusing on the rail width H and the notch width G, the ratio of the rail width H to the notch width G is, for example, H: G = 1.0: 1.8.
That is, the notch width G is wider than the rail width H.

Then, as shown in FIG. 25, the annular portion A31 is fitted into the base casing 51 (base). Further, the annular portion B32 is fitted into the tube 60.
At this time, since the annular portion A31 abuts against the fixing portion 59, the ring 30 is positioned by the fixing portion 59.
Further, as described above, the ring 30 is fixed between the fixing portion 59 and the heat sink 95 by screwing the heat sink 95 to the base casing 51.

Further, as described above, since the notch width G is wider than the rail width H, the rail 64a and the notch 37a are fitted. (Same for rail 64b and notch 37b). That is, the notch 37a is for receiving the rail 64a.
For example, if the annular portion B32 does not have the notch 37a, the rail 64a hits the wall surface of the annular portion B32, and the ring 30 (annular portion B32) and the tube 60 cannot be fitted.
If the ring 30 is fixed by fitting the rail 64a and the notch 37a, the ring 30 may not be fixed by the heat sink 95. That is, the ring 30 may be fixed between the rail 64a and the fixing portion 59.

Further, there may or may not be a gap D between the end surface 62 of the tube 60 and the end surface 49 of the base casing 51.
When there is a gap D, the ring 30 is fixed at a position that covers the gap D at the connection portion between the tube 60 and the base casing 51 (base). As a result, the gap D at the connecting portion between the tube 60 and the base case 51 (base) is closed by the ring 30, and dust, moisture, etc. are inside the illumination lamp 100 (inside the tube 60 and the base case 51). Intrusion can be prevented. In addition, in order to make prevention of intrusion of dust, moisture, and the like stronger, a rubber packing or the like may be provided in the gap D, for example.
The gap D may be opened in the outer wall portion of the annular portion B32, or the gap D may be opened in the outer wall portion of the annular portion A31.
Further, the end surface 62 of the tube 60 and the end surface 49 of the base casing 51 may be in contact with each other.

And the clearance gap D is 1 mm as above-mentioned, for example. Assuming that the length of the ring 30 in the tube axis direction is E, the ratio of the length E of the ring 30 to the gap D is, for example, E: D = 9.5: 1.0.
Note that the total length L of the illumination lamp 100 can be changed by changing the length E of the ring 30. For example, by increasing the length E of the ring 30 and widening the gap D, the overall length L of the illumination lamp 100 can be increased without changing the tube 60 or the base (power supply base 50, ground base 80). It is.

(Second example of fitting of tube, ring and base)
FIG. 26 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the second example.
The tube 60b is a tube without the rail 64a and the rail 64b of the tube 60. And when there is no rail 64a and rail 64b, like the ring 30a, the notch 37a and the notch 37b may not exist. The ring 30a is a second example of a ring.
In this case, the ring 30 a is fixed between the heat sink 95 and the fixing portion 59.

In the following description, an example in which the rail 64a and the rail 64b are not provided in the tube is used. Therefore, a case where the ring has no notch will be described.
When the tube 64 includes the rail 64a and the rail 64b, the description will be omitted, but the ring described below will be provided with a notch.

(Third example of fitting of tube, ring and base)
FIG. 27 is a diagram illustrating a third example of the ring.
FIG. 28 is a cross-sectional view of a third example of the ring.
FIG. 29 is a cross-sectional view of a third example of the ring.
FIG. 30 is a diagram showing a state before fitting of the illumination lamp using the ring of the third example.
FIG. 31 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the third example.

FIG. 28 is a first example showing a cross section taken along line II of the ring 30b in FIG.
FIG. 29 is a second example showing a cross section taken along line II of the ring 30b in FIG.

In the first example of the ring and the second example of the ring (FIGS. 22 to 26) described above, the case where the outer diameter α is equal to the outer diameter β has been described, but as shown in the ring 30b of FIG. The outer diameter α and the outer diameter β may not be equal.
And the ring 30b has a level | step difference in cyclic | annular part A31b and cyclic | annular part B32b. A surface generated by this step is referred to as a ring fixing surface 36b.
As shown in the left side view of FIG. 27, the ring fixing surface 36b is a portion larger than the outer diameter β of the annular portion B32b on the left side surface of the annular portion A31b.

As shown in the right side view of FIG. 27, the inner wall 35b has a step. This step is shown in the sectional view of FIG.
As shown in FIG. 28, the ring 30b has a step in the inner wall 35b corresponding to the difference between the outer diameter α of the annular portion A31b and the outer diameter β of the annular portion B32b when the wall thickness is uniform.

On the other hand, the ring 30b may have a non-uniform wall thickness, as shown in FIG.
In other words, in the example of FIG. 29, the inner diameter of the ring 30b is uniform. The inner wall 35b is flat.

In FIG. 30, the outer diameter α of the annular portion A31b is equal to or smaller than the inner diameter A of the cap casing 51, and the outer diameter β of the annular portion B32b is equal to or smaller than the inner diameter B of the cylindrical tube 60c.
Here, in the example of FIG. 30, the outer diameter X of the base casing 51 and the outer diameter Y of the tubular tube 60 c are equal, and the thickness of the wall of the tubular tube 60 c is thicker than the thickness of the side wall 57. The case where the inner diameter B of the cylindrical tube 60c is smaller than the inner diameter A of the cap casing 51 is shown.
However, the outer diameter X of the cap casing 51 and the outer diameter Y of the tube 60 c may not be equal, and the inner diameter B of the tube 60 c may be larger than the inner diameter A of the cap casing 51.
The tube 60c has an end surface 62c, and the ring 30b has a ring fixing surface 36b.

As shown in FIG. 31, after fitting the cylindrical tube 60 c, the ring 30 b, and the base casing 51, the ring 30 b is fixed between the heat sink 95 and the fixing portion 59.
However, the ring fixing surface 36b may be fixed by the end surface 62c of the tubular tube 60c. In that case, the ring 30 b may not be fixed by the heat sink 95.

(Effect of Embodiment 1)
In some cases, for example, the material of the tube is glass and the outer diameter or the outer diameter of the tip of the tube is different between the case of resin (polycarbonate).
Specifically, when the material of the tube is glass, for example, the outer diameter of the tip is small as in the example of FIG. Then, in order to directly fit the glass tube 60a as in the example of FIG. 10, a base having the same inner diameter as the outer diameter of the tip of the tube 60a is manufactured.
On the other hand, when the material of the cylindrical tube is, for example, resin (polycarbonate), the outer diameter of the tip does not become thin as in the example of FIG. 5 described above, and the inner diameter of the base manufactured for the glass cylindrical tube 60a The outer diameter of the tip of the resin tube 60 is increased. That is, the relationship of “inner diameter of the base <outer diameter of the cylindrical tube 60 of the resin” is established. For this reason, the resin tube 60 and the base manufactured for the glass tube 60a cannot be directly fitted, and conventionally, it is necessary to manufacture a new base for the resin tube 60. It was.

However, by using the ring of the first embodiment, the base manufactured for the glass tube 60 a can be used in common for the resin tube 60. In addition, the cost can be reduced and the development period can be shortened.
That is, by adding the ring of the first embodiment as a part of the illumination lamp 100, it is possible to obtain the illumination lamp 100 in which the base is commonly used regardless of the diameter of the tube. That is, one type of base can be adapted to both specifications of the glass tube 60a and the resin tube 60.

Embodiment 2. FIG.
The difference between the second embodiment and the first embodiment will be mainly described.
In addition, about the part which is common in Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the second embodiment, the description will be given by taking as an example a case where a ring having an annular portion C is used.

FIG. 32 is a diagram illustrating a fourth example of the ring.
FIG. 33 is a view showing a state before fitting of the illumination lamp using the ring of the fourth example.
FIG. 34 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the fourth example.

As shown in FIG. 32, the ring 30c includes an annular portion C33c having an outer diameter γ larger than the outer diameter α of the annular portion A31c between the annular portion A31c and the annular portion B32c. Here, the annular portion C33c is a central annular portion located between the annular portion A31c and the annular portion B32c.
The outer diameter γ of the annular portion C33c is larger than the outer diameter β of the annular portion B32c.
In the example of FIG. 32, the outer diameter α of the annular portion A31c and the outer diameter β of the annular portion B32c are equal.

As shown in the left side view, a portion larger than the outer diameter β of the annular portion B32c on the left side surface of the annular portion C33c is referred to as a ring fixing surface 36c.
Further, as shown in the right side view, a portion larger than the outer diameter α of the annular portion A31c on the right side surface of the annular portion C33c is referred to as a ring fixing surface 36d.
That is, the ring 30c has two (a plurality of) ring fixing surfaces.

  32 shows a case where the inner wall 35c is flat, the inner wall 35c may not be flat. For example, as shown in FIG. 29 described above, the wall thickness may be uniform.

In FIG. 33, illustration of the heat sink 95 is omitted (the same applies to the following drawings).
In FIG. 33, the annular portion A31c has an outer diameter α that is equal to or smaller than the inner diameter A of the base casing 51.
The annular portion B32c has an outer diameter β that is equal to or smaller than the inner diameter B of the cylindrical tube 60b.
As described above, the outer diameter α of the annular portion A31c and the outer diameter β of the annular portion B32c are equal (the same outer diameter). For example, the inner diameter A of the cap casing 51 and the inner diameter B of the cylindrical tube 60b are the same inner diameter.
As shown in FIG. 33, it is preferable that the outer diameter Y of the cylindrical tube 60b, the outer diameter X of the cap casing 51, and the outer diameter γ of the annular portion C33c are equal, but at least one of them is not equal. Good. For example, the difference between the diameters may be within 1 mm.

Then, as shown in FIG. 34, the annular portion A31c is fitted into the base casing 51 (base). Further, the annular portion B32c is fitted into the cylindrical tube 60b.
At this time, since the annular portion A31c abuts against the fixing portion 59, the ring 30c is positioned by the fixing portion 59.

In addition, the annular portion C33c exists between the end surface 62b of the cylindrical tube 60b and the end surface 49 of the base housing 51 (base).
That is, the annular portion C33c may be fixed by the end surface 62b of the tubular tube 60b and the end surface 49 of the base casing 51.
In other words, the ring fixing surface 36 c may be fixed by the end surface 62 b of the cylindrical tube 60 b, and the ring fixing surface 36 d may be fixed by the end surface 49 of the base housing 51.
In this case, for example, the ring 30c can be fixed without the heat sink 95 and the fixing portion 59.

Further, the annular portion C33c may be fixed by the end surface 62b of the cylindrical tube 60b and the fixing portion 59. In that case, the ring 30c may not be fixed by the heat sink 95 (not shown).
Further, as described above, the ring 30c may be fixed by the fixing portion 59 and the heat sink 95 (not shown).

(Ring variation)
FIG. 35 is a diagram showing a state after fitting of the illumination lamp using the ring of the fifth example.
FIG. 35 shows an example in which the inner diameter B of the cylindrical tube 60d is smaller than the inner diameter A of the base casing 51. Here, the outer diameter Y of the cylindrical tube 60d is also smaller than the outer diameter X of the cap casing 51. For example, as shown in FIG. 30, the wall of the cylindrical tube 60d is thick, and the outer diameter of the cylindrical tube 60d is The outer diameter X of the base casing 51 may be equal.

The ring 30d includes an annular part A31d having an outer diameter α, an annular part B32d having an outer diameter β, and an annular part C33d having an outer diameter larger than the outer diameters of the annular part A31d and the annular part B32d. The outer diameter β of the annular portion B32d is smaller than the outer diameter α of the annular portion A31d.
And although illustration of a side view is abbreviate | omitted, the cyclic | annular part C33 has the ring fixing surface 36e in the left side (cylinder tube 60d side), and has the ring fixing surface 36f in the right side (base metal housing 51 side).
The outer wall of the annular portion C33d is inclined from the end portion of the ring fixing surface 36f toward the end portion of the ring fixing surface 36e.
FIG. 35 shows an example in which the inner wall 35d has a step, but the inner wall 35d may be flat. When the inner wall 35d is flat, the inner wall 35d may be horizontal in the tube axis direction or may be inclined obliquely.
That is, as described above, for example, the shape of the inner wall 35 is not limited as long as the protruding portion 53 of the base casing 51, the trunk portion 73a, and the like can be accommodated.

  The fitting of the tubular tube 60d, the ring 30d, and the base casing 51 is the same as described above, and the description thereof is omitted (the same applies hereinafter).

FIG. 36 is a diagram showing a state after fitting of the illumination lamp using the ring of the sixth example.
FIG. 36 shows an example in which the inner diameter B of the cylindrical tube 60d is larger than the inner diameter A of the base casing 51, contrary to FIG.
The ring 30e has an annular part A31e, an annular part B32e, and an annular part C33e, and the annular part C33e has a ring fixing surface 36g and a ring fixing surface 36h. The outer diameter β of the annular portion B32e is larger than the outer diameter α of the annular portion A31e.
The outer wall of the annular portion C33e is inclined from the end of the ring fixing surface 36g toward the end of the ring fixing surface 36h.
FIG. 36 shows an example in which the inner wall 35e is flat and horizontal in the tube axis direction.

FIG. 37 is a view showing a state after fitting of the illumination lamp using the ring of the seventh example.
The ring 30f has an annular part A31f, an annular part B32f, and an annular part C33f.
The cylindrical tube 60d and the base casing 51 in FIG. 37 are the same as those in FIG. 35, but the wall of the annular portion B32f of the ring 30f sandwiches the wall of the cylindrical tube 60.
By setting it as such a shape, fitting with the ring 30f and the cylindrical tube 60d becomes stronger.
In this case, as shown in FIG. 37, the outer diameter of the portion of the annular portion B32f fitted in the cylindrical tube 60d is defined as the outer diameter β of the annular portion B32f. The outer diameter β of the annular portion B32f is smaller than the outer diameter α of the annular portion A31f.

FIG. 38 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the eighth example.
The ring 30g has an annular part A31g, an annular part B32g, and an annular part C33g.
The tubular tube 60e and the base casing 51 in FIG. 38 are the same as in FIG. 36, but the wall of the annular portion A31g of the ring 30g sandwiches the side wall 57 of the base casing 51.
By setting it as such a shape, the fitting with the ring 30g and the cap housing 51 becomes stronger.
In this case, as shown in FIG. 38, the outer diameter of the portion of the annular portion A31g fitted into the base casing 51 is defined as the outer diameter α of the annular portion A31g. The outer diameter β of the annular portion B32g is larger than the outer diameter α of the annular portion A31g.

FIG. 39 is a diagram showing a state after fitting of the illumination lamp using the ring of the ninth example.
The ring 30h includes an annular part A31h, an annular part B32h, and an annular part C33h.
The wall of the annular portion A31h of the ring 30h sandwiches the side wall 57 of the base housing 51, and the wall of the annular portion B32h of the ring 30h sandwiches the wall of the cylindrical tube 60b.
By setting it as such a shape, fitting with the ring 30h, the nozzle | cap | die base 51, and the cylinder pipe 60b becomes firmer.
In this case, as shown in FIG. 39, the outer diameter of the portion of the annular portion A31h that is fitted inside the base casing 51 is the outer diameter α of the annular portion A31h, and of the shape portion B32h, Let the outer diameter of the part fitted inside the cylindrical tube 60b be the outer diameter β of the annular portion B32h.
In the example of FIG. 9, the outer diameter of the annular portion A31h and the outer diameter β of the annular portion B32h are equal, but the outer diameter of the annular portion A31h and the outer diameter β of the annular portion B32h may not be equal.

(Effect of Embodiment 2)
The ring of the second embodiment has two ring fixing surfaces in the annular portion C, so that, for example, it is fixed to the tube and the base case 51 (base) without the heat sink 95 or the base case 51 of the base case 51. Is possible.
In addition, the ring according to the second embodiment more firmly prevents dust, moisture, and the like from entering the inside of the illumination lamp 100 (inside the tube 60 and the base casing 51).

Embodiment 3 FIG.
The difference between the third embodiment and the first embodiment will be mainly described.
In addition, about the part which is common in Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the third embodiment, description will be given by taking as an example a case where a cylindrical tube having a stepped portion is used.

FIG. 40 is a diagram illustrating an example of a structure of a cylindrical tube.
FIG. 41 is a diagram illustrating a state before fitting of the illumination lamp using the ring of the tenth example.
FIG. 42 is a diagram illustrating a state after fitting of the illumination lamp using the ring of the tenth example.

  As shown in FIG. 40, the cylindrical tube 60f includes a stepped portion 63a and a stepped portion 63b that protrude from the inner wall 61f. The tube 60f may have only the stepped portion 63a or may have only the stepped portion 63b.

  The stepped portion 63a and the stepped portion 63b protrude in a ring shape along the inner circumference of the cylindrical tube 60f (the circumference of the inner wall 61f).

  As shown in FIG. 41, the diameter relationship among the cylindrical tube 60f, the ring 30a, and the base casing 51 is the same as that in FIG.

And as shown in FIG. 42, the ring 30a is fixed between the fixing | fixed part 59 and the level | step-difference part 63a.
In other words, the ring 30a has the stepped portion 63a, so that the ring 30a is securely fixed without moving in the inner direction of the illumination lamp 100 (cylindrical tube 60) without the heat sink 95.

  FIG. 42 shows the power supply base 50 side, and illustration of the ground base 80 side is omitted, but on the ground base 80 side, the ring 30a is fixed between the fixing portion 59a and the stepped portion 63b.

FIG. 43 is a diagram illustrating an example of a structure of a cylindrical tube.
FIG. 42 shows an example in which the stepped portion 63a and the stepped portion 63b protrude in a ring shape along the inner periphery (circumference of the inner wall 61f) of the cylindrical tube 60f, but the stepped portion may not be a ring shape. Good.
As shown in FIG. 43, in the tubular tube 60g, for example, a plurality of protruding step portions 63c to 63i may protrude from the inner wall 61g.
In addition, the ring 30a should just be fixed by the level | step-difference part, and the quantity of a level | step-difference part is not limited.

(Effect of Embodiment 3)
Since the cylindrical tube of the third embodiment has the step portion, the ring can be reliably fixed without the heat sink 95.

In the above description of the embodiment, an example has been described in which a common base can be used by using a ring even if the shape (inner diameter, outer diameter, etc.) of the tube is changed.
In the above embodiment, it is obvious that a common tube can be used by using a ring even when the shape (inner diameter, outer diameter, etc.) of the die changes.

  Further, although the embodiments of the present invention have been described above, two or more of these embodiments may be implemented in combination. Alternatively, one of these embodiments may be partially implemented. Alternatively, two or more of these embodiments may be partially combined. In addition, this invention is not limited to these embodiment, A various change is possible as needed.

  In addition, there are manufacturing variations in the dimensions of various parts and assembled products. Therefore, numerical values such as the dimensions described in the embodiment of the present invention (for example, the dimensions of the ring 30) may vary up to about ± 15%.

  Hereinafter, the characteristics of each embodiment described above will be described.

The illumination lamp according to the embodiment of the present invention,
In the lighting lamp,
A cylindrical base having an inner diameter A;
A tube having an inner diameter B;
An annular part A having an outer diameter α equal to or smaller than the inner diameter A and a ring having an annular part B having an outer diameter β equal to or smaller than the inner diameter B and fitted into a cylindrical tube is provided. .

  The ring is characterized in that the outer diameter α and the outer diameter β are the same outer diameter.

  The ring is characterized in that it is fixed at a position covering the gap D of the connecting portion between the tube and the base.

The base is
A disc-shaped lid,
A cylindrical side wall with one end covered with the lid and the other end opened;
From the lid part to the middle of the side wall, it has a fixed part protruding from the inner wall surface of the side wall toward the center of the tube,
The ring is positioned by a fixing portion.

  The fixing portion has an annular surface having an inner diameter C smaller than the inner diameter A.

The illumination lamp further includes a heat sink extending inside the tube,
The ring is fixed between the fixing portion and the heat sink.

The tube has a stepped portion protruding from the inner wall surface of the tube,
The ring is fixed between the fixed portion and the stepped portion.

The ring has an annular portion C having an outer diameter larger than the outer diameter α of the annular portion A between the annular portion A and the annular portion B.
The annular portion C is present between the end surface of the tube and the end surface of the base.

The tube has a rail protruding from the inner wall surface in the longitudinal direction,
The annular part B of the ring is characterized by having a notch for receiving the rail.

  The illumination lamp uses a resin tube as a tube.

  30, 30a-30h Ring, 31, 31a-31h Annular part A, 32, 32a-32h Annular part B, 33c-33h Annular part C, 35, 35b-35e Inner wall, 36b-36h Ring fixing surface, 37a, 37b Notch, 49 End face, 50 Power supply base, 51 Base housing, 52, 52a Screw hole, 53, 53a Projection part, 54, 54a Lid part, 55, 55a Thick part, 56, 56a Thin part, 57, 57a Side wall, 58a ˜58d Alignment pin, 59, 59a Fixed portion, 60, 60a˜60g Tube, 61, 61f˜61g Inner wall, 62, 62b˜62c End face, 63a˜63i Stepped portion, 64a, 64b Rail, 70a, 70b Feed terminal , 71a, 71b joint, 73a trunk, 75a notch, 80 ground base, 81 base housing, 82 Terminal, 90 substrate, 94a, 94b alignment part, 95 heat sink, 96 screw hole, 97 LED, 98a, 98b feeding land, 99 screw, 100 illumination lamp, A, B, C inner diameter, X, Y, α, β, γ Outer diameter, D clearance, E-ring tube length, F notch length, G notch width, H rail width, L total length.

Claims (12)

A base having an inner diameter A,
A cylindrical tube whose inner diameter is B smaller than the inner diameter A of the base;
A heat sink disposed inside the tube,
An annular portion A to which the base is fitted is provided on one end side, and an annular portion B to which the tubular tube is fitted is provided on the other end side, and
The ring is
The annular portion A is formed with an outer diameter α equal to or less than the inner diameter A of the base, and the annular portion B is formed with an outer diameter β equal to or less than the inner diameter B of the cylindrical tube;
The base is fixed to the heat sink, and the ring is fixed between the base and the heat sink. A base having an inner diameter A,
A cylindrical tube whose inner diameter is B larger than the inner diameter A of the base;
A heat sink disposed inside the tube,
An annular portion A to which the base is fitted is provided on one end side, and an annular portion B to which the tubular tube is fitted is provided on the other end side, and
The ring is
The annular portion A is formed with an outer diameter α equal to or smaller than the inner diameter A of the base, and the annular portion B is formed with an outer diameter β equal to or smaller than the inner diameter B of the cylindrical tube.
The base is fixed to the heat sink, and the ring is fixed between the base and the heat sink.   The illumination lamp according to claim 1, wherein the ring has translucency.   The illumination lamp according to claim 1, wherein the ring is formed using a resin material.   5. The illumination according to claim 1, wherein the ring is fixed between the base and the heat sink in a state where the base and the heat sink are screwed together. 6. lamp.   The illumination lamp according to claim 1, wherein an outer diameter β of the annular portion B is smaller than an outer diameter α of the annular portion A.   The illumination lamp according to claim 2, wherein an outer diameter β of the annular portion B is larger than an outer diameter α of the annular portion A.   The illumination lamp according to claim 1 or 6, wherein an outer diameter X of the base is larger than an outer diameter Y of the cylindrical tube.   The illumination lamp according to claim 2 or 7, wherein an outer diameter X of the base is smaller than an outer diameter Y of the cylindrical tube.   The illumination lamp according to any one of claims 1 to 7, wherein an outer diameter X of the base is equal to an outer diameter Y of the cylindrical tube. With a base,
A tube,
A heat sink disposed inside the tube,
An annular portion A to which the base is fitted is provided on one end side, and an annular portion B to which the tubular tube is fitted is provided on the other end side, and
The base is fixed to the heat sink, and the ring is fixed between the base and the heat sink. With a base,
A tube,
A heat sink disposed inside the tube,
One end side in the tube axis direction is fitted to the base, and the other end side in the tube axis direction is provided with a ring fitted to the tube.
The base is fixed to the heat sink, and the ring is fixed between the base and the heat sink.

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