JP2001015963A - Heat radiating fin for fluorescent lamp and its heat radiating adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the high-temperature deterioration of fluorescent paint by using heat radiating fins which can lower the temperature of a fluorescent lamp at the blackening end of the lamp and its vicinity by readily attaching the fins to the part of the tube wall of the lamp. SOLUTION: A heating radiating adapter R1 is constituted in such a way that two bodies of heat radiating fins F1 which are connected to each other in a state where the two bodies are faced oppositely to each other are supported by a plate spring S1, which supports the bodies in a state where the spring S1 urges the bodies in a freely expandable state. The spring S1 is constituted in such a way that engaging projecting pieces 8 which are protruded from both the front and rear ends of an arcuate base 7 having an internal wall surface 6 that is closely brought into contact with the tube wall of a fluorescent lamp L1 are bent outward in the radial direction, and again bent inward at the spots corresponding to the front end sections of terminal fins 4A and side projecting pieces 9 for preventing side slipping are raised and erected from the side sections of the projecting pieces 8 by bending the pieces 9. The adapter R1 is attached to part of the tube wall of the fluorescent lamp 1 by putting the adapter 1 on the part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiating fin of a straight tube type or a circulating tube type fluorescent lamp, and more particularly, to a radiating fin of a fluorescent lamp which is mounted near the end of a tube for use. About.

[0002]

2. Description of the Related Art In many cases, the vicinity of the end of a tube of a fluorescent lamp of a straight tube type or a circuit line type usually gradually darkens as the period around one year elapses after mounting. Initially, the end of the tube is blackened)
He knows empirically that a flickering phenomenon causes a blinking state and then the ball breaks.

When the straight tube type fluorescent lamp is turned on, if the vicinity of the end of the tube is touched with a hand, it is hot enough to cause a burn. It is customary that the heat is high.

[0004] Therefore, two lighting fixtures A in the same room,
Temperature distribution in the section of about 10 cm from the base at the end of the tube shown in FIG. 11 (a) and the center of the four rabbit-start type fluorescent lamps A1, A2, B1, and B2 shown in FIG. About one hour after lighting,
When a measurement was performed using a handy type non-contact type temperature measuring device, a numerical value as shown in FIG. 11B was measured.

As a result, although there appears to be a slight measurement difference depending on the product type and the number of hours of use of the fluorescent lamp, M
In the case of company products, when the ambient temperature of the ceiling near the mounting part of the lighting equipment is 30 ° C., the maximum temperature is “71 ° C.
The value of “79 ° C” is 3 cm from the inner edge of the base at the end of the tube.
It was measured in the vicinity (hereinafter referred to as around 3 cm).
When the ambient temperature of the ceiling is 26 ° C. (data not shown) at a later date, M
In the case of company products, “67 ° C-71 ° C” is measured.
In the case of the T company product with the fluorescent lamp replaced, "65 ° C
６８68 ° C. ”was measured.

[0006] In addition to the above measurement data, 3
It turned out that the maximum temperature was reached in about 30 minutes after lighting in the vicinity of cm, and that the temperature was higher on the blackened end of the same tube.

[0007] It seems that fluorescent lamps are originally designed so that the tube wall temperature during operation is about 40 ° C.
Actually, the temperature distribution as described above is exhibited depending on the location of the tube wall. This is due to the structure of the fluorescent lamp, that is, the lead at the tip of the stem protruding from the inside of the base at the end of the tube. Due to the structure in which thermions are emitted from the filament formed through the wire, it is natural that the tube wall near the tip of the filament, that is, around 3 cm, has the highest temperature. It is reasonable that the fluorescent paint in (1) deteriorates at high temperature first.

[0008]

In consideration of the above considerations, the temperature of the side where the pipe end is blackened is higher on the side of the same pipe, but the temperature is relatively lower when the pipe end is not blackened. From the measurement result that it is low, the temperature around 3 cm is easily
If it can be lowered by simple means, blackening of the tube end due to high temperature deterioration of the fluorescent paint in the vicinity can be suppressed, and it can be expected that the life of the fluorescent lamp will be prolonged.

On the other hand, if an electric fan is attached near the place in order to lower the temperature around 3 cm, it becomes expensive in itself and lacks economy.

[0010]

Therefore, according to the present invention, a radiating fin capable of lowering the temperature near the blackening of the tube end of a fluorescent lamp, and using the fin easily mounted on the tube wall of the relevant place are used. Invented a heat-dissipating adapter that can be used for the following.

Specifically, in claim 1, the fluorescent lamp L
1, an arc-shaped base 3 having an inner wall surface 2 which is in close contact with a part of the tube wall 1 of L2, and a heat-dissipating fin having a large number of fins 4 protruding from the surface of the arc-shaped base 3. I will provide a.

Further, according to claim 2, the fluorescent lamps L1, L
The heat radiation of the fluorescent lamps L1, L2 comprising an arc-shaped base 3 having an inner wall surface 2 which is substantially in contact with the second tube wall 1 and a number of fins 4 protruding from the surface of the arc-shaped base 3 Provided is a heat dissipation adapter including fins F1 to F5, and leaf springs S1 to S5 for fitting and supporting the heat dissipation fins F1 to F5 into a part of the tube wall 1 of the fluorescent lamps L1 and L2. This suppresses the temperature rise of the fluorescent lamp in the vicinity of 3 cm, thereby suppressing the high-temperature deterioration of the fluorescent paint and contributing to prolonging the life of the tube.

According to the third aspect, the radiating fins F1 to F3 and F5 opposed to each other are urged and supported by leaf springs S1 to S3 and S5 so as to be freely openable.
Is integrally provided with an arc-shaped base 3 having an inner wall surface 2 to be attached to a part of the tube wall 1 of the fluorescent lamps L1 and L2 so as to be in close contact therewith, and a number of fins 4 protruding from the surface of the arc-shaped base 3. Adapter for heat dissipation of molded products.

According to the fourth aspect, the leaf springs S1, S2
Is provided with an arc-shaped base 7 having an inner wall surface 6 that is substantially in close contact with the tube wall 1 of the fluorescent lamps L1 and L2, and engaging projections 8 formed at both ends thereof, so that a radiation fin can be formed. Dealing with simple quick assembly.

Further, the radiation fins F3 and F4 of the fluorescent lamps L1 and L2 are fixed to the arc-shaped leaf springs S3 and S4 whose upper parts are opened.
Is integrally provided with an arc-shaped base 3 having an inner wall surface 2 to be attached to a part of the tube wall 1 of the fluorescent lamps L1 and L2 so as to be in close contact therewith, and a number of fins 4 protruding from the surface of the arc-shaped base 3. It is a molded product.

Further, in the present invention, an arc-shaped base 3 having an inner wall surface 2 which is in close contact with a part of the tube wall 1 and a large number of fins 4 projecting from the surface of the arc-shaped base 3. The radiating fins F5 of the fluorescent lamps L1 and L2 provided with a flat plate spring S5 for biasing and supporting the left and right radiating fins F5 so as to be freely expandable are provided on the inner wall surface 6 substantially concentric with the tube wall 1. The radiation adapter is formed integrally with the arcuate base 7 provided and the connecting portions 16 bent at both ends.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a heat dissipation adapter R1 according to a first embodiment of the present invention will be described with reference to the accompanying drawings shown in FIGS. This heat dissipation adapter R1
Is connected and supported by two opposing radiating fins F1 and a leaf spring S1 that urges and supports the radiating fin F1 so as to be able to expand, thereby providing a radiating adapter to a part of the tube wall 1 of the fluorescent lamp L1. R1 is fitted and mounted.

The radiating fin F1 is an extruded product formed by aluminum die-casting and has a fin width of about 10 mm to 30 mm. In the case of the radiating fin F1 shown in FIG.
And has an inner wall surface 2 which is in close contact with the tube wall 1 of the fluorescent lamp L1 and has a thickness of 2 mm to 3 m.
m, and about 10 radiatingly protrudingly formed on the surface of the arc-shaped base 3, the fin height is 7m.
It is an integrally molded product with a large number of fins 4 of about m to 10 mm. Reference numeral 5 denotes an engagement recess formed stepwise at a position inside the terminal fin 4A in the heat radiation fin F1.

The leaf spring S1 has an inner wall surface 6 which is in close contact with and abuts on the tube wall 1 of the fluorescent lamp L1.
mm, and an engagement protruding piece 8 which is bent outward in the radial direction from both ends and then bent inward again at a portion corresponding to the tip of the terminal fin 4A. And side projections 9 for preventing lateral displacement that are bent and raised from the side of the engagement projection 8. In the center of the arc-shaped base 7, an opening 10 is punched out so that the plate spring S1 has a plate width of 20 mm or more so as not to block the passage of a lamp downward.

When the two radiating fins F1 are opposed to each other as shown in FIGS. 1 and 2 and connected and fixed by the above-mentioned leaf spring S1, the above-mentioned leaf spring S1 is used.
One of the engaging projections 8 is inserted into the engaging recess 5 of the terminal fin 4A of the one radiating fin F1 and fixed by caulking, and the other engaging projecting piece 8 of the leaf spring S1 is fixed to the other radiating fin. F1
To the engaging recess 5 of the terminal fin 4A. In addition, the side projecting pieces 9 are bent and raised with respect to the terminal fins 4A immediately before and after that, so that the radiation fins F are formed.
1 prevents lateral displacement. As a result, the two radiating fins F1 opposed to each other are urged and supported by the leaf spring S1 so as to be freely expandable, and are assembled into the radiating adapter R1 having an upper portion opened in an expanded state.

Therefore, the circulating line mounted on the tube wall 1 near the terminal 3 cm of the straight tube type fluorescent lamp L1 mounted on the lighting equipment K1 shown in FIG. 5, or on the lighting equipment K2 shown in FIG. In the fluorescent lamp L2 of the type, the opening 11 of the upper part of the heat dissipation adapter R1 faces the tube wall 1 about 3 cm from the connection end of the insertion plug (with about four electrode pins) from below and pushes up. As a result, the opening 11 is once expanded and fitted against the urging force of the leaf spring S1, and the leaf spring S1 is elastically restored, so that the inner wall surface 2 of the radiation fin F1 is connected to the pipe of the part. It is attached to the wall 1 in a substantially adhered state.

This was mounted on a blackened portion of a tube end near 3 cm from a terminal of a straight tube type fluorescent lamp L1 similar to the case shown in FIG. 11, and the temperature of the portion was measured. In the case of the heat dissipation adapter R1 of the embodiment, it was confirmed that the effect of lowering the temperature by about 20 degrees was exhibited. Of course, if the fin width of the radiation fin F1 is set to 20 mm, which is larger than that of the first embodiment, or if the number of the fins 4 is increased, the temperature of the portion is lowered more than the above case. be able to.

Next, in the case of the heat radiation adapter R2 of the second embodiment shown in FIGS. 7A to 7C, the shape of the heat radiation fin F2 corresponds to the lower half of the tube wall 1. The outer wall surface 12 of the arcuate base 3 at the position is formed vertically downward, and about two lower half fins 4 project from the vertical outer wall surface 12 in the horizontal direction. At this time, the upper fin 4
Are projected in the radial direction, similarly to the case of the radiation fin F1 shown in the first embodiment.

A leaf spring S2 for urging and supporting the two radiating fins F2 facing left and right so as to be freely opened.
Is formed by an arcuate base 7 at the center, an engaging projection 8 and a side projection 9 which are extended and bent back in the left-right horizontal direction. Then, as in the case of the first embodiment described above, the left and right engaging projections 8 of the leaf spring S2 are inserted into the terminal fins 4B at the lower ends of the two radiating fins F2, and then the distal ends thereof are inserted. Is fixed to the engaging recess 5 by caulking.

In the case of the heat-radiating adapter R3 of the third embodiment shown in FIGS. 8A to 8C, an arc-shaped heat-radiating fin F3 having an open upper part is located at the front and rear positions of the inner wall surface 2. The leaf spring S3 has a structure inscribed therein. Specifically, outwardly engaging projections 13 are formed at the left and right central portions of the leaf spring S3, and the outer wall surface 12 of the arc-shaped base 3 of the radiation fin F3 is formed.
The fins 4 project in the horizontal direction (or in the radial direction) from above, and the engagement recess 1 is formed in the center of the inner wall surface 2 of the arc-shaped base 3.
4, the engaging recess 14 is fitted into the engaging projection 13 of the leaf spring S <b> 3, and connected by a rivet 15.

In this case, since the radiation fin F3 is fitted into the tube wall 1 of the fluorescent lamp L1 via the plate spring S3, the plate spring S3 is provided between the tube wall 1 and the radiation fin F3. Is formed, but if the thickness is small, the inner wall surface 2 of the radiation fin F3
However, it can be considered that they are almost in contact with each other, and the heat radiation effect from the mounting portion is not significantly impaired.
Of course, in order to enhance the adhesion of the radiation fins F3 to the tube wall 1, a part of the inner wall surface 2 of the radiation fins F3 can be dealt with by recessing the plate width of the leaf spring S3. .

In the case of the heat radiation adapter R4 of the fluorescent lamp L1 shown in FIGS. 9 (a) to 9 (c), an arc-shaped leaf spring having an open upper part is provided at the center of the inner wall surface 2 of the heat radiation fin F4. S4 has an inscribed structure. Specifically, an outwardly engaging projection 13 is formed at the center of the lower end of the leaf spring S4, and the outer wall surface 12 of the arc-shaped base 3 of the radiation fin F4 is formed.
Fins 4 project radially from the base, and an engaging recess 14 is formed at the lower center position of the inner wall surface 2 of the arc-shaped base 3, and the engaging recess 14 is engaged with the engaging protrusion 13 of the leaf spring S <b> 4.
And are connected by rivets 15.

Also in this case, similarly to the third embodiment, a leaf spring S4 is provided between the tube wall 1 and the radiation fin F4.
Although the gap corresponding to the plate thickness is formed, if the plate thickness is small, it can be considered that the inner wall surfaces 2 of the radiation fins F4 are substantially in contact with and in contact with each other. Further, in order to enhance the adhesion of the radiation fin F4, a part of the inner wall surface 2 of the radiation fin F4 may be formed to be recessed about the plate width of the leaf spring S4.

Finally, the fifth line shown in FIGS. 10 (a) and 10 (b)
In the case of the heat dissipating adapter R5 of the embodiment, a metal powder such as an aluminum powder or a stainless steel powder having excellent thermal conductivity is mixed into a synthetic resin material and heated and melted for injection molding, or is heated and melted. After injection molding, the molded article is sintered at a high temperature to form an integrally molded article. The heat-dissipating adapter R5 includes the heat-dissipating fins F1 to F4 and the leaf springs S1 to S4, as in the first to fourth embodiments.
Instead of assembling the parts, the radiation fins F5 opposed to the left and right and a leaf spring S5 connected to the lower end thereof are provided.
To form a single unit.

In this case, the terminal fins 4A, 4A, 4F of the radiating fins F1, F2 are provided at portions corresponding to the engaging projections 8 of the leaf springs S1, S2 in the first and second embodiments.
A U-shaped connecting portion 16 is formed by combining B and the engaging projection 8. In short, the heat dissipation adapter R5 of the fifth embodiment is provided with an arc-shaped base 3 having an inner wall surface 2 which is in close contact with a part of the tube wall 1 and protrudes from the surface of the arc-shaped base 3. Fluorescent lamp L1 provided with many fins 4
A leaf spring S5 for radiating the radiating fins F5 to the left and right, and biasing and supporting the left and right radiating fins F5 so as to be freely opened.
Formed by an arc-shaped base 7 having a concentric inner wall surface 6 with a slight gap from the tube wall 1 and a connecting portion 16 bent outward from both ends and bent back into a U-shape. are doing. At this time, the outer piece of the connecting portion 16 is
Also serves as the terminal fin 4A. In addition, FIG.
(B), the inner wall surface 6 of the arc-shaped base 7 of the leaf spring S5.
And the tube wall 1 are formed with a slight gap therebetween. However, even if the inner wall surface 6 is brought into close contact with the tube wall 1 and brought into contact therewith, it does not change the gist of the present invention.

[0031]

According to the present invention, as described above, the fluorescent lamp L
1, a fluorescent lamp having an arc-shaped base 3 having an inner wall surface 2 which is in close contact with a part of a tube wall 1 of L2 and a large number of fins 4 protruding from the surface of the arc-shaped base 3; Since it is a radiating fin, it is effective as a radiating member for lowering the temperature near the tube end of the fluorescent lamp, and has excellent moldability,
It can be provided at a low price.

Further, as described in claim 2, an arc-shaped base 3 having an inner wall surface 2 which is in close contact with the tube wall 1 of the fluorescent lamps L1, L2, and a surface of the arc-shaped base 3 Fluorescent lamps L1, L2 having a large number of projecting fins 4
Radiation fins F1 to F5, and the radiation fins F1 to F5
Is a heat radiation adapter composed of leaf springs S1 to S5 which are fitted into a part of the tube wall 1 of the fluorescent lamps L1 and L2 and biased and supported, so that the fluorescent lamp can be easily mounted and the mounting portion By mounting it near 3 cm from the tube end, it is possible to prevent the temperature rise at the tube end and to suppress the high-temperature deterioration of the fluorescent paint near the tube end, thereby prolonging the life of the fluorescent lamp tube. To contribute.

As described in claim 3, the radiating fins F1 to F3 and F5 facing each other are formed by leaf springs S1 to S5.
3. In S5, the radiating fin F1
To an F-shaped base 3 having an inner wall surface 2 for mounting F3 and F5 in close contact with a part of the tube wall 1 of the fluorescent lamps L1 and L2.
And a number of fins 4 projecting from the surface of the arc-shaped base 3
Since the heat dissipation adapter is formed as an integrally molded product provided with the above, the same practical effects as described above are brought about.

Further, as described in claim 4, the arc-shaped base 7 having the inner wall surface 6 such that the leaf springs S1, S2 are substantially in close contact with the tube wall 1 of the fluorescent lamps L1, L2, and both ends thereof Since this is provided with the engagement protruding piece 8 formed in this manner, it is convenient for the assembling work with the radiation fin.

As described in the fifth aspect, the fluorescent lamps L are provided on the arc-shaped leaf springs S3 and S4 whose upper parts are open.
1. An arc-shaped base 3 having an inner wall surface 2 for fixing the radiation fins F3 and F4 of L2 and fixing the radiation fins F3 and F4 to a part of the tube wall 1 of the fluorescent lamps L1 and L2 substantially in close contact. Also, a heat dissipation adapter formed as an integrally molded product having a large number of fins 4 protruding from the surface of the arc-shaped base 3 exhibits the same practical effect as in the above case.

In addition, as described in claim 6, the tube wall 1
Radiating fins F5 of fluorescent lamps L1 and L2 each including an arc-shaped base 3 having an inner wall surface 2 which is in close contact with a part of the base and a plurality of fins 4 protruding from the surface of the arc-shaped base 3. And a plate spring S5 for urging and supporting the left and right radiating fins F5 so as to be able to open and close is bent at an arc-shaped base 7 having an inner wall surface 6 substantially concentric with the tube wall 1 and at both ends thereof. By providing a heat dissipation adapter integrally formed with the formed connecting portion 16, in addition to the above-described practical effects, by improving the mass productivity of this type of product, it is possible to provide the product at a low price to the market. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a heat dissipation adapter according to a first embodiment.

FIG. 2A is a front view showing a product state before mounting;
(B) is a front view showing a state mounted on the fluorescent lamp,
(C) is a bottom view.

3A is a front view of a radiation fin, and FIG. 3B is a bottom view.

4 (a) is a front view of a leaf spring, FIG. 4 (b) is a plan view showing a spring end from obliquely above, and FIG. 4 (c) is a bottom view.

FIG. 5 is a perspective view showing a state in which a heat-dissipating adapter is attached to a straight tube type fluorescent lamp attached to a lighting fixture.

FIG. 6 is a perspective view showing a state in which a radiator adapter is mounted on a circline type fluorescent lamp mounted on a lighting fixture.

FIGS. 7A and 7B are views showing a second embodiment of the heat dissipation adapter, wherein FIG. 7A is a front view, FIG.
(C) is a side view.

FIG. 8 is a view showing a third embodiment of the heat dissipation adapter, wherein (a) is a front view, (b) is a bottom view,
(C) is a side view.

FIGS. 9A and 9B are views showing a fourth embodiment of the heat dissipation adapter, wherein FIG. 9A is a front view, FIG. 9B is a bottom view,
(C) is a side view.

FIGS. 10A and 10B are views showing a fifth embodiment of a heat radiation adapter integrally formed by injection, wherein FIG. 10A is a front view showing a product state before being mounted, and FIG. It is a front view showing the state where it did.

FIG. 11 (a) is a diagram showing measurement points of a straight tube type fluorescent lamp, and FIG. 11 (b) is measurement data showing a temperature distribution of the fluorescent lamp.

[Explanation of symbols]

 R1 to R5 Heat dissipation adapter F1 to F5 Heat dissipation fins S1 to S5 Leaf spring L1, L2 Fluorescent lamp K1, K2 Lighting equipment 1 Tube wall 2, 6 Inner wall surface 3, 7 Arc base 4 Fin 4A, 4B Terminal fin 5, 14 Mating recess 8 Engagement projection 9 Side projection 10 Opening 11 Opening opening 12 Outer wall 13 Engagement projection 15 Rivet 16 Connecting part

Claims (6)

[Claims] 1. An arc-shaped base 3 having an inner wall surface 2 which is substantially in close contact with a part of a tube wall 1 of the fluorescent lamps L1, L2.
And a number of fins 4 projecting from the surface of the arc-shaped base 3
A fin for radiating a fluorescent lamp, comprising: 2. An arc-shaped base 3 having an inner wall surface 2 which is in close contact with the tube wall 1 of the fluorescent lamps L1 and L2, and a large number of fins 4 projecting from the surface of the arc-shaped base 3. The radiating fins F1 to F5 of the fluorescent lamps L1 and L2, and the radiating fins F1 to F5 are connected to the tube wall 1 of the fluorescent lamps L1 and L2.
A heat-dissipating adapter for a fluorescent lamp, comprising: leaf springs S1 to S5 which are fitted into a part of and are biased and supported. 3. The radiating fins F1 to F3, F5 opposed to each other.
Is urged and supported by leaf springs S1 to S3 and S5 so as to be freely opened,
The radiation fins F1 to F3, F5 are connected to the fluorescent lamp L1,
A fluorescent lamp as an integrally molded product having an arc-shaped base 3 having an inner wall surface 2 to be attached to a part of the tube wall 1 of L2 substantially in close contact, and a number of fins 4 protruding from the surface of the arc-shaped base 3. Adapter for heat dissipation. 4. The plate springs S1 and S2 are connected to the fluorescent lamps L1 and L2.
The fluorescent lamp according to claim 2, further comprising an arc-shaped base having an inner wall surface that is substantially in close contact with a part of the tube wall of L <b> 2, and engaging projections formed at both ends thereof. Adapter for heat dissipation. 5. An arc-shaped leaf spring S3 having an open upper portion.
4, the radiation fins F3 and F4 of the fluorescent lamps L1 and L2 are fixed, and the radiation fins F3 and F4 are connected to the fluorescent lamp L.
1, an arc-shaped base 3 having an inner wall surface 2 to be attached to a part of the tube wall 1 of L2 substantially in close contact, and a plurality of fins 4 protruding from the surface of the arc-shaped base 3 as an integrally molded product. Adapter for heat radiation of fluorescent lamp. 6. A fluorescent light comprising: an arc-shaped base 3 having an inner wall surface 2 substantially in contact with a part of a tube wall 1; and a number of fins 4 protruding from the surface of the arc-shaped base 3. Lamp L
1. A leaf spring S5 for opposing the radiating fins F5 of L2 and biasing and supporting the left and right radiating fins F5 so as to be freely opened.
A base 7 having an inner wall 6 substantially concentric with the tube wall 1.
And a connecting portion 16 formed by bending at both ends thereof, and a heat radiation adapter for a fluorescent lamp.