JPH1125725A - Fluorescent lamp and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a gap in an abutting part of partitioning pieces, leaking of light from the gap, and marring commercial vale by constructing the abutting part of partition pieces of a face consisting of plural partition pieces so that they overlap each other. SOLUTION: A base 3 is molded from a heat-resistant synthetic resin, and is formed almost cylindrically. Four base pins 5 are protruded on an almost rectangular flat part of the base 3. The base 3 is divided into two parts on the border of the longitudinal plane of the center forming a semicylindrical first partition piece 6 and the second partition piece 7. They are coupled by one screw via screwing boss 6a, 7a formed on the first and the second partition pieces 6, 7 to be form almost into a cylindrical shape. This abutting part of the partition pieces 6, 7 is constituted so as to be superposed by a protrusion 6b and a recession 7b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fluorescent lamp and a lighting fixture using the fluorescent lamp.

[0002]

2. Description of the Related Art Conventionally, a ring-shaped fluorescent lamp is formed by applying a phosphor to the inner surface of a linear glass bulb, sintering the electrodes, sealing electrodes at both ends, forming the bulb into a ring by thermoforming, and further forming a bulb. The inside is evacuated, and mercury and a rare gas are sealed therein.
Thereafter, a base consisting of a pair of semi-cylindrical parts is provided at both ends of the annular valve, and lead wires from electrodes are connected to four terminal pins implanted in the base.

[0003]

However, in the conventional ring-shaped fluorescent lamp, the bases provided at both ends of the annular bulb are formed by simply dividing the pair of semi-cylindrical parts constituting the base into semi-cylindrical sections. Due to the configuration in which the semi-cylindrical pieces abut against each other, there is a gap at the mutual abutment between the semi-cylindrical pieces due to molding errors, difficulty in molding and thermal deformation of the semi-cylindrical pieces. As a result, when the fluorescent lamp is turned on, light leaks from the gap, resulting in a problem of impairing the merchantability.

In view of the above, the present invention has been made to solve the above-mentioned problem, and is configured so that the abutting portions of the split pieces of the base are overlapped with each other so that a gap generated at the abutting portions of the split pieces is generated. To prevent light from leaking from the gap,
An object of the present invention is to provide a fluorescent lamp and a lighting fixture using the fluorescent lamp without impairing the merchantability.

[0005]

According to a first aspect of the present invention, there is provided a glass bulb and a base comprising a plurality of divided pieces provided so as to cover both ends of the glass bulb. Are configured to overlap.

[0006] The overlapping of the abutting portions between the split pieces of the base is not only caused by the uneven ridges, but also in order to prevent the occurrence of gaps generated in the abutting portions.
Various configurations can be applied.

The split pieces of the base are not limited to a pair of semi-cylindrical pieces, but may be formed of three or four split pieces.

According to a second aspect of the present invention, in the fluorescent lamp of the first aspect, the ring outer diameter is 285 to 310 mm and the tube outer diameter is 15 mm.
ガ ラ ス 18 mm, a glass bulb coated with a phosphor on the inner surface side, mercury and a rare gas sealed in the glass bulb, and sealed at both ends in the glass bulb so as to generate a discharge in the glass bulb A pair of electrode means, with a lamp power in the range of 20-40 W, and 10
Lighting is performed at a high frequency of kHz or more.

According to a third aspect of the present invention, in the fluorescent lamp according to the first aspect, the ring outer diameter is 365 to 390 mm and the tube outer diameter is 15 mm.
１８18 mm, an annular glass bulb coated with a phosphor on the inner surface side, mercury and rare gas sealed in the glass bulb, and sealed at both ends in the glass bulb so as to generate a discharge in the glass bulb With a pair of electrode means, the lamp power in the range of 28-50W,
In addition, it is configured to light at a high frequency of 10 kHz or more.

According to a fourth aspect of the present invention, there is provided the fluorescent lamp of the first aspect, wherein the outer ring diameter is 210 to 235 mm and the outer tube diameter is 15 mm.
１８18 mm, an annular glass bulb coated with a phosphor on the inner surface side, mercury and rare gas sealed in the glass bulb, and sealed at both ends in the glass bulb so as to generate a discharge in the glass bulb With a pair of electrode means, with a lamp power in the range of 17-30 W,
In addition, it is configured to light at a high frequency of 10 kHz or more.

According to the second to fourth aspects of the present invention, since the outer diameter (29 mm) of the glass bulb of a generally used annular fluorescent lamp is smaller, lamp characteristics such as total luminous flux and efficiency are improved, and brightness is improved. Can be improved. Here, particularly in such a ring-shaped fluorescent lamp, in order to improve the brightness, a configuration is adopted in which the abutting portions of the base pieces are overlapped with each other, so that a gap generated at the abutting portions of the split pieces is generated. It is effective to prevent light leakage from the gap.

The outer diameter of the glass bulb is 15 to 18 mm.
Is within the range. When bending the glass bulb, it is conceivable that the outer diameter of the tube is slightly reduced and partially deviates from the above range, but it is sufficient if most of the outer diameter is within the above range.

It is generally known that the efficiency of a fluorescent lamp can be improved by reducing its tube diameter. Experiments have shown that in order to improve the lamp efficiency of the conventional annular fluorescent lamp by 10% or more, it is necessary to reduce the tube outer diameter to 65% or less. That is, the thickness is about 1
For a glass bulb of about mm, the outer diameter of the tube may be 18 mm or less. Further, it was visually confirmed that according to the size, the reduction in thickness of the ring-shaped fluorescent lamp was sufficiently satisfied.

When the tube outer diameter is less than 15 mm, the lamp efficiency is numerically satisfactory, but the light output equivalent to that of the conventional ring-shaped fluorescent lamp cannot be obtained. It becomes extremely difficult to bend.

The ring diameter of the glass bulb is ±± the conventional ring outer diameter.
It is desirable to be within 5%. If it corresponds to the 30W type, the outer ring diameter is 210 to 235 mm, and if it corresponds to the 32W type, the outer ring diameter is 285 to 310 mm, 40
The outer ring diameter is 365 to 390 m if it corresponds to W type.
m.

The reason why this range is desirable is that, by reducing the tube outer diameter so as to approximate the conventional ring outer diameter, the lamp can be made thinner while maintaining the image of the size of the conventional ring-shaped fluorescent lamp. is there.

It is not necessary that the ring-shaped fluorescent lamp be lit entirely with a lamp power within a predetermined range, and the desired fluorescent lamp power within this range is determined to be rated lighting or high-output lighting, and is lit. I just need.

According to a fifth aspect of the present invention, there is provided an illuminating apparatus including a luminaire main body and the fluorescent lamp according to any one of the first to fourth aspects disposed on the luminaire main body.

The apparatus main body may be a ceiling-mounted type, a ceiling-hanging type, or a wall-mounted type, to which gloves, shades, reflection shades and the like may be mounted, a device with an exposed fluorescent lamp, and a light guide plate. It may be provided.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fluorescent lamp and a lighting device according to an embodiment of the present invention.

FIGS. 1 to 7 show a first embodiment of the present invention. FIG. 1 is a perspective view of a ring-shaped fluorescent lamp, FIG. 2 is a front view showing a base of the ring-shaped fluorescent lamp taken out, and FIG. FIG. 4 is a plan view, FIG. 4 is a side view, FIG. 5 is a partially exploded perspective view showing the essential part, and FIG. 6 is a partially exploded plan view of a base of the ring-shaped fluorescent lamp.

In FIG. 1, an annular fluorescent lamp 1 has an annular glass bulb 2 in which a discharge medium made of a rare gas and mercury is sealed.
A protective film made of alumina (Al ₂ O ₃ ) fine particles and a phosphor layer made of a three-wavelength phosphor are formed on the inner wall surface of the glass bulb 2, and a filament electrode as an electrode means is provided at both ends of the glass bulb 2. Is provided, and a base 3 is provided so as to cover both ends of the glass bulb 2 so as to extend between both ends.

Here, when the ring-shaped fluorescent lamp 1 is equivalent to the 32 W type, the glass bulb 2 has an outer ring diameter of 299 mm, an inner ring diameter of 267 mm, an outer tube diameter of 16.5 mm, and a thickness of the glass bulb 2 of 1.65 mm. It is formed to 1 mm.

In the case of a 40 W type or equivalent, the glass bulb 2 has a ring outer diameter of 373 mm, a ring inner diameter of 341 mm, and a tube outer diameter of 1 mm.
The thickness of the glass bulb 2 is 6.5 mm, and the thickness of the glass bulb 2 is 1.1 mm.

In the case of the 30W type, the outer diameter of the glass bulb 2 is 225 mm, the inner diameter of the ring is 192 mm, the outer diameter of the tube is 16.5 mm, and the thickness of the glass bulb 2 is 1.1 mm.
Formed.

Next, the base 3 will be described with reference to FIGS. The base 3 is formed of a heat-resistant synthetic resin member made of hollow PBT, polycarbonate, or the like. The base 3 is formed in a substantially arcuate shape so as to form a part of an annular shape following the glass bulb 2 and has a substantially cylindrical shape. . Four base pins 5 electrically connected to the electrodes are protruded from the substantially rectangular flat portion 4 of the base 3. The base pins 5 are disposed on the base 3 so as to form a rectangle with four pins, and a large interval is provided between a pair of pins attached between the filaments.

The distance between the pair of pins attached between the filaments is about 6 mm, and the distance between the pair of pins is about 1 mm.
The distance is set to 0 mm, which is different from the standardized pin spacing of the base, so that the conventional socket is not attached to the base 3 and erroneous insertion can be prevented. By doing so, an improvement in the withstand voltage between the electrodes can be expected.

The base 3 is divided into two parts by a surface extending along the central longitudinal direction, and forms a first semi-cylindrical divided piece 6 and a second divided piece 7 respectively. These split pieces 6 and 7 are assembled so as to abut on each other at the abutting portion 8, and screw bosses 6 a and 7 a formed on the split pieces 6 and 7 are formed.
Through a single screw 9 to form a substantially cylindrical shape. Here, as shown in FIG. 4 and FIG. 5, in the abutting portion 8 between the divided pieces 6 and 7,
b is formed, and a concave stripe 7b is formed on the divided piece 7 side, and they are fitted to each other, and are configured to overlap with each other by the convex stripe 6b and the concave stripe 7b. The fitting between the convex 6b and the concave streak 7b is only required if the convex 6b enters the region of the concave streak 7b, and may be in a contact state with each other or may have some gap. .

Next, FIG. 6 shows the inside of the first divided piece 6 in which the base 3 is provided with a base pin (not shown) on the outside. On the inner peripheral surface of the split piece 6, a rib 3a which is close to or in contact with the end of the glass bulb 2 is protruded in a direction perpendicular to the inner peripheral surface at a height which does not hit the exhaust pipe 2a.

Reference numeral 3b denotes an engagement projection which engages with a small-diameter portion having a node-like shape formed near the end of the glass bulb 2, and prevents the glass bulb 2 from being detached from the base 3.

A pin forming portion 3c is formed in the center of the base 3, and lead wires led out from both ends of the glass bulb are connected to conductive portions of the base pins provided in the pin forming portion 3c. .

When the annular fluorescent lamp 1 is handled, the rib 3a is deformed in a direction in which the glass bulb 2 gets over the engagement of the engagement projection 3b and the two ends approach each other.
a is prevented from contacting the screw bosses 6a and 7a and being damaged.

In particular, it has been found that when the diameter of the tube is smaller than in the conventional case, the glass bulb 2 is more likely to bend in a direction in which the both ends thereof approach each other. Does not largely move to the pin forming portion 3c side.

The rib 3 may be provided only on the side where the exhaust pipe 3a is located, or may be provided on the other side.

As described above, according to the present embodiment, the abutting portion 8 of the split pieces 6 and 7 of the base 3 is
b, so as to prevent the occurrence of a gap generated at the abutting portion 8 between the divided pieces 6 and 7, and
Leakage of light from the gap can be prevented. Further, the rotation of the base 3 between the divided pieces 6 and 7 in the horizontal direction can be suppressed. Further, since the divided pieces 6 and 7 are slightly arcuate, the movement in the axial direction can also be suppressed. Each other can be positioned properly.

Next, second to sixth embodiments of the present invention will be described with reference to FIGS. 7 to 10 are side views showing the abutting portions of the split pieces of the base. First, FIG. 7 shows a second embodiment, in which
A V-shaped ridge is formed on the divided piece 6 of the second divided piece 7.
Are formed so as to form a V-shaped concave strip, and both are superposed. FIG. 8 shows a third embodiment, in which
An L-shaped ridge is formed on the divided piece 6 of the second divided piece 7.
Are formed so that an L-shaped concave stripe is formed and both are superposed. FIG. 9 shows a fourth embodiment, in which the first split piece 6 and the second split piece 6 are brought into an abutting state as if the base of the cylinder was cut at a certain angle with respect to the radial direction of the cylinder. A divided piece 7 is formed, and both are superposed.
FIG. 10 shows a fifth embodiment, in which the first split piece 6 of the base is formed thicker than the second split piece 7 and forms a concave strip. The pieces are fitted so that they overlap. FIG. 11 shows a sixth embodiment, in which the first divided piece 6 of the base has a larger cylindrical diameter than the second divided piece 7, and the first divided piece 6 covers the second divided piece 7. Are configured to be polymerized.

FIG. 12 is a sectional view showing a seventh embodiment of the present invention, in which the fluorescent lamp of the present invention is applied to a lighting fixture.

Numeral 11 is an instrument body, and this instrument body 11 is
The outer shape is circular and thin, and a circular opening 12 is formed in the center in the vertical direction.
A storage section 13 having a storage space is formed around the storage section 13, and an annular step portion 14 in which the annular fluorescent lamps 1 a and 1 b are disposed is formed around the storage section 13. The annular plate portion 15 facing above the step portion 14 is formed in a flat plate shape thinner than the thickness of the storage portion 13 in the height direction.

A pair of sockets 16 for connecting the bases 3 of the two ring-shaped fluorescent lamps 1a and 1b are disposed obliquely outward on the step portion 14 of the apparatus main body 11, and the position of the socket 16 is determined. A pair of resin-made or metal-made lamp holders 17 fitted and held on the outer periphery of the glass bulb 2 are arranged at positions symmetrical to the above.

The opening 1 is provided in the storage section 13 of the appliance body 11.
2, a socket 18 is provided.
, A baby ball 19 is screw-connected.

Two annular fluorescent lamps 1a and 1b having different lamp ring diameters are respectively arranged on an annular step portion 14 of the appliance body 11, and a base pin 5 projecting from the base 3 is inserted and connected to a socket 16. The glass bulb 2 on the side opposite to the base 3 is held by a lamp holder 17. A baby ball 19 is connected to the socket 18.

In the space of the storage section 13 of the instrument body 11,
A high-frequency lighting circuit 20 including an inverter lighting circuit is provided. An adapter 21 is electrically connected to a power input side of the high-frequency lighting circuit 20 by an electric wire (not shown) or the like, and each socket 16 is electrically connected to an output side by an electric wire or the like.

The high-frequency lighting circuit 20 turns on the ring-shaped fluorescent lamp 1a by supplying the ring-shaped fluorescent lamp 1a corresponding to the 32W type with a lighting power of 38 W at a high frequency of 45 kHz, for example, a lamp current of about 430 mA and a lamp voltage of about 88 V. Let it. In addition, the ring-shaped fluorescent lamp 1b equivalent to the 40 W
The condition that the lamp power is 48 W at a high frequency of kHz, for example, a lamp current of about 430 mA and a lamp voltage of about 111 V is supplied, and the ring-shaped fluorescent lamp 1b corresponding to the 40 W type is turned on. Further, in the case of the ring-shaped fluorescent lamp 1c corresponding to the 30W type, a condition that the lamp power is 28W at a high frequency of 45kHz, for example, the lamp current is about 430mA and the lamp voltage is about 65
V is supplied to turn on the ring-shaped fluorescent lamp 1c corresponding to the 30 W type.

The adapter 21 is formed in a thin disk shape, and is integrally fixed to the instrument main body 11 via a connecting portion (not shown) at a lower portion inside the opening portion 12 of the instrument main body 11. Are connected to the power supply input side of the discharge lamp lighting device 20 by wires or the like wired along. The adapter 21 is electrically connected and mechanically supported by a rectangular hooking seal 22 installed on a ceiling or the like when the device is mounted.

The shade 23 is attached to the instrument body 11 so as to cover the lower side and the side of the instrument body 11. The shade 23 is made of a translucent milky white material, and is formed in a thin shape that protrudes gently with a large arc surface downward, and has a mounting portion 24 attached to the instrument body 11 at the periphery.
Are formed.

Next, the operation of the present embodiment will be described.

As shown in FIG. 12, the instrument body 11 is supported on the ceiling or the like via an adapter 21 connected to a hooking ceiling 22 installed on the ceiling or the like. The main body 11 side and the hooking sealing 22 side are electrically connected.

When the ring-shaped fluorescent lamps 1a and 1b and the baby ball 19 are turned on, the ring-shaped fluorescent lamps 1a and 1b are turned on.
The light emitted from the baby ball 19 passes through the shade 23 and is illuminated.

Then, the ring-shaped fluorescent lamp 1 equivalent to the 32W type is used.
The ring-shaped fluorescent lamp 1b corresponding to the a and 40W types is lit by supplying a high frequency of 45 kHz and 38W and 48W of lamp power from the high-frequency lighting circuit 20, respectively.
When the ring-shaped fluorescent lamp 1c equivalent to the 30W type is mounted, the high-frequency lighting circuit 20 supplies a high-frequency of 45 kHz and a lamp power of 28W to each of the lamps to light.

The annular fluorescent lamps 1a and 1b are a conventional 32W
Because the outer diameter of the ring is almost the same as the shape, 40W type and 30W type, the image of the size of the conventional type instrument body remains,
It is possible to reduce the thickness, and the conventional 32W
It is possible to obtain light output almost equivalent to that of the ring-shaped fluorescent lamps of the 40-W, 40-W and 30-W types.

In such a lighting state of the lighting equipment,
Since the abutting portions 8 of the split pieces 6 and 7 of the base 3 are configured to overlap each other, light does not leak from the abutting portions.

In each of the above embodiments, a ring-shaped fluorescent lamp having an improved tube brightness of 16.5 mm has been described. However, the present invention relates to a generally used tube having a tube outer diameter of 29 mm. Needless to say, the present invention can be applied to a ring-shaped fluorescent lamp and a compact fluorescent lamp.

[0053]

According to the fluorescent lamp of the present invention, it is possible to prevent the occurrence of a gap at the abutting portion between the divided pieces of the base,
It is possible to provide a fluorescent lamp that prevents light from leaking from the gap and does not impair productability, and a lighting fixture using the fluorescent lamp.

[Brief description of the drawings]

FIG. 1 is a perspective view of a ring-shaped fluorescent lamp according to a first embodiment of the present invention.

FIG. 2 is a front view showing a base of the ring-shaped fluorescent lamp.

FIG. 3 is a plan view showing a base of the ring-shaped fluorescent lamp.

FIG. 4 is a side view showing a base of the ring-shaped fluorescent lamp.

FIG. 5 is an exploded perspective view showing a main part of a base of the ring-shaped fluorescent lamp.

FIG. 6 is an exploded plan view showing a base of the ring-shaped fluorescent lamp.

FIG. 7 is a partial side view of a base of a ring-shaped fluorescent lamp according to a second embodiment of the present invention.

FIG. 8 is a partial side view of a base of a ring-shaped fluorescent lamp according to a third embodiment of the present invention.

FIG. 9 is a partial side view of a base of a ring-shaped fluorescent lamp according to a fourth embodiment of the present invention.

FIG. 10 is a partial side view of a base of a ring-shaped fluorescent lamp according to a fifth embodiment of the present invention.

FIG. 11 is a partial side view of a base of a ring-shaped fluorescent lamp showing a sixth embodiment of the present invention.

FIG. 12 is a sectional view of a lighting fixture showing a seventh embodiment of the present invention. 1, 1a, 1b: annular fluorescent lamp, 2: glass bulb, 3: base, 6: first split piece, 7: second split piece, 8: opposition Joint part, 11 ... appliance body.

Claims (5)

[Claims] A glass bulb; and a base comprising a plurality of divided pieces provided so as to cover both ends of the glass bulb;
Wherein the abutting portions of the split pieces of the base are overlapped with each other. 2. A glass bulb having a ring outer diameter of 285 to 310 mm, a tube outer diameter of 15 to 18 mm, and a phosphor applied to an inner surface thereof; mercury and a rare gas sealed in the glass bulb; A pair of electrode means sealed at both ends in the glass bulb so as to generate a discharge therein, with a lamp power in the range of 20 to 40 W, and
The fluorescent lamp according to claim 1, wherein the fluorescent lamp is configured to be lit at a high frequency of 10 kHz or more. 3. An annular glass bulb having a ring outer diameter of 365 to 390 mm, a tube outer diameter of 15 to 18 mm, and a phosphor applied to an inner surface thereof; mercury and a rare gas sealed in the glass bulb; A pair of electrode means sealed at both ends in the glass bulb so as to generate a discharge in the glass bulb; and a lamp power in the range of 28 to 50 W and a high frequency of 10 kHz or more. The fluorescent lamp according to claim 1, wherein the fluorescent lamp is configured to be turned on. 4. An annular glass bulb having an outer ring diameter of 210 to 235 mm, an outer tube diameter of 15 to 18 mm, and a phosphor applied to an inner surface thereof; mercury and a rare gas sealed in the glass bulb; A pair of electrode means sealed at both ends in the glass bulb so as to generate a discharge in the glass bulb; and a lamp power in the range of 17 to 30 W and a high frequency of 10 kHz or more. The fluorescent lamp according to claim 1, wherein the fluorescent lamp is configured to be turned on. 5. A lighting device comprising: a device main body; and the fluorescent lamp according to claim 1 disposed on the device main body.