JP2001167609A - Embedded type of illuminator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an embedded type of an illuminator that can reduce the circumferential temperature difference of each of the lamp featuring determination parts even in case using a lamp in which the positions of the lamp featuring determination part are different. SOLUTION: In an embedded type of an illuminator having a reflecting plate (1) and a piece base type of fluorescent lamp (2), the piece base type of fluorescent lamp (2) is constituted so that three pairs of a luminescent tubes (5) are sandwiched in series between bridges (7) and two pairs of a luminous tubes (5) out of the three pairs of the luminous tubes (5) are arranged discontinuous. A filament (9) is formed in the two pairs of the luminous tubes (5), an amalgam portion (6) is formed in the other one pair of luminous tubes (5) and a position determining equipment (4) is formed to be sandwiched between the two pairs of the luminous tubes (5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recessed lighting device, and more particularly, to a recessed lighting device using a single base fluorescent lamp.

[0002]

2. Description of the Related Art As a conventional embedded type lighting apparatus, for example, as shown in FIG. 5, one using a one-base fluorescent lamp (2) is known. ,
Some lamps have different lamp characteristic determining factors.

[0003] One of them is a normal lamp which determines lamp characteristics according to the temperature of the coldest point, and the other is an amalgam lamp which determines lamp characteristics according to the temperature of amalgam.

As shown in FIG. 6, according to a graph showing the characteristics of each lamp of the normal lamp and the amalgam lamp, the amalgam lamp maintains the optimum characteristics over a wide temperature range as compared with the normal lamp. It had characteristics such as good characteristics in a high temperature range.

Next, a description will be given of a lamp characteristic determining unit of the single-base fluorescent lamp (2). As shown in FIG.
The position of the coldest point of the normal lamp when u is lit is the point (14), and the tip (4) of the single base fluorescent lamp (2) becomes the lamp characteristic determining unit (13). As shown in FIG. 8, the position of the amalgam of the amalgam lamp is indicated by the amalgam portion (1).
5), and the base part (3) of the single base fluorescent lamp (2) becomes the lamp characteristic determining part (13). That is, a single-base fluorescent lamp (2) that can be attached to the same recessed lighting device
Therefore, the position of the lamp characteristic determining unit (13) is different. Here, the 42 W lamp (FHT42) of the single-base fluorescent lamp (2) was constructed with the structure of FIG.
100% of the input power at an ambient temperature of 25 ° C. when used in an embedded lighting fixture with a reflector of 100 m (without a reflector). In the use state, the input power and the light output are almost proportional.) In this case, the normal lamp was 96.3% and the amalgam lamp was 93.8%.

[0006] From these results, the decrease in luminous flux when using a normal lamp is relatively small, but when using an amalgam lamp, the luminous flux is supposed to be improved even when the ambient temperature of the lamp is originally high, such as when the lamp is installed. It can be seen that the luminous flux is reduced. This is because the reflector has a wide opening in the direction of the lamp tip and a narrow opening in the direction of the lamp base, and the lamp is mounted so that the lamp base is at the top. Has a temperature gradient that is low at the lamp tip and high at the lamp base, and the ambient temperature of the lamp base is too high.

In other words, the lamp characteristics determining unit (1) of each lamp whose lamp characteristics are designed in the lamp single state.
The position of 3) is different, and the difference in the ambient temperature of each lamp characteristic determining unit (13) at the time of assembling the fixture is a result of increasing the size in a small and highly efficient operation.

Therefore, when using lamps having different positions of the lamp characteristic determining section (13), it has become necessary to reduce the ambient temperature difference between the respective lamp characteristic determining sections (13).

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned facts, and has as its object to be applied to a case where lamps having different positions of the lamp characteristic determining unit are used. Another object of the present invention is to provide an embedded lighting device that can reduce the ambient temperature difference between the lamp characteristic determining units.

[0010]

According to the first aspect of the present invention, there is provided a recessed type lighting apparatus comprising a reflector (1) and a single-base fluorescent lamp (2).
In the embedded lighting apparatus having the above-mentioned structure, the single-base fluorescent lamp (2) includes three sets of arc tubes (5) connected in series via a bridge (7), and the three sets of arc tubes (5). ), Two sets of arc tubes (5) are connected so as to be discontinuous. A filament (9) is formed in the two sets of arc tubes (5), and the remaining one set of arc tubes is formed. An amalgam portion (6) is formed in the arc tube (5), and a positioning tool (4) is provided so as to be interposed between the two sets of arc tubes (5).

According to a second aspect of the present invention, there is provided an embedded lighting device, wherein the positioning tool (4) is attached to an upper portion inside the reflector (1).

[0012] In a third aspect of the present invention, there is provided an embedded lighting device, wherein the positioning tool (4) is formed to have a substantially L-shaped cross section.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings according to embodiments.

FIG. 1 is a cross-sectional view showing an embedded lighting device according to one embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state when the embedded lighting fixture according to one embodiment of the present invention is attached. FIG. 3 is a cross-sectional view showing a state immediately before the mounting of the recessed lighting device according to the embodiment of the present invention. FIG. 4A is a cross-sectional view showing a state after the single-base fluorescent lamp and the positioning metal fitting according to one embodiment used in the recessed lighting device of the present invention have been attached,
FIG. 4B is a side view of FIG.

As shown in FIGS. 1 to 4, the recessed lighting device of the present invention is a recessed lighting device having a reflector (1) and a one-piece fluorescent lamp (2). (2) The three arc tubes (5) are connected in series via the bridge (7), and two of the three arc tubes (5) are discontinuously connected. A filament (9) is formed on the two sets of arc tubes (5), and an amalgam portion (6) is formed on the other set of arc tubes (5). A positioning tool (4) is provided so as to be interposed between the two sets of arc tubes (5).

The reflector (1) is not particularly limited as long as it can reflect light, and may be made of metal or resin. It doesn't matter.

The single-base fluorescent lamp (2) includes lamps having different lamp characteristic determining factors.
The normal lamp determines the lamp characteristics according to the temperature of the coldest point (8), and the amalgam lamp determines the lamp characteristics according to the temperature of the amalgam. Incidentally, in the normal lamp, as shown in FIGS. 1 to 3 and FIG. 4 (b), the tip of the single-base fluorescent lamp (2) is the coldest point (8). In addition, as the single-ended fluorescent lamp (2), for example, the filament (9) may be exposed.

As shown in FIGS. 1 and 4 (a), the single-ended fluorescent lamp (2) has three sets of arc tubes (5) connected in series via a bridge (7). Moreover, of the three sets of arc tubes (5), two sets of arc tubes (5)
Are connected so as to be discontinuous. Each of the arc tubes (5) has a U-shaped outer shape and is placed horizontally. The one-piece fluorescent lamp (2) composed of the three sets of arc tubes (5) is inserted and attached to the plug-in socket (3) as shown in FIGS.

In the present invention, as shown in FIGS. 1 to 4, a filament (9) is formed in the two sets of arc tubes (5), and an amalgam portion (6) is formed in the remaining one set of arc tubes (5). ).

The positioning tool (4) is shown in FIGS.
(A), the two sets of arc tubes (5) are provided so as to be interposed between them. That is, the positioning tool (4) is interposed between two sets of arc tubes (5) not connected by the bridge (7). As the positioning tool (4), generally, a metal tool, that is, a metal fitting is used. However, a resin tool may be used as long as it has heat resistance or the like. It is not limited.

According to the present invention, the single base fluorescent lamp is positioned by the positioning tool (4) provided so as to be interposed between two sets of arc tubes (5) connected so as to be discontinuous. As the lamp (2), the mounting direction is always kept constant, and the lamp (2) has the filament (9) formed in the two sets of arc tubes (5) and the remaining one (1).
By forming the amalgam portion (6) in the set of arc tubes (5), the amalgam portion (6) is not affected by the heat generated by the heat generated by the filament (9). The temperature of the amalgam portion (6) of the lamp (2) is reduced. Then, the temperature difference between the respective lamp characteristic determining sections is reduced, and the characteristics when the normal lamp is attached are hardly changed, and the characteristics when the amalgam lamp is attached are improved.

According to the present invention, by adopting such a configuration, even when lamps having different positions of the lamp characteristic determining section are used, the difference in ambient temperature between the respective lamp characteristic determining sections can be reduced. Things.

Further, as shown in FIGS. 1 to 4, when the positioning tool (4) is attached to an upper portion inside the reflector (1), the positioning tool (4) inside the reflector (1) is mounted. The positioning tool (4) attached to the upper portion does not interrupt the illumination of the single-base fluorescent lamp (2) and does not affect the lighting effect. The two arc tubes (5) forming the filament (9) are connected so as to be discontinuous at the upper side in the height direction, and the amalgam portion (6) is formed. The one-piece fluorescent lamp (2) is attached in a fixed direction so that the remaining one set of the arc tubes (5) is downward in the height direction, and the effect of heat generated by the filament (9) is amalgamated. Not reliably received in part (6), so that It becomes the temperature reduction of the amalgam portion (6) of the mouthpiece a fluorescent lamp (2) is prompted more reliably. Then, the temperature difference between the respective lamp characteristic determining sections is further reduced, and the characteristics when the normal lamp is attached are hardly changed, and the characteristics when the amalgam lamp is attached are more reliably improved.

Further, as shown in FIG. 1, if the positioning tool (4) is formed to have a substantially L-shaped cross section,
The positioning tool (4) can be easily attached while one side of the positioning tool (4) having a substantially L-shaped cross section is brought into contact with the inside of the reflector (1). Installation of 4) becomes very easy.

According to the recessed lighting apparatus according to the present invention, as shown in FIGS. 1 to 4, in the recessed lighting apparatus having a reflector (1) and a one-piece fluorescent lamp (2), A fluorescent lamp (2) includes three sets of arc tubes (5) connected in series via a bridge (7), and three sets of arc tubes (5).
Of these, two sets of light emitting tubes (5) are connected so as to be discontinuous. A filament (9) is formed in the two sets of light emitting tubes (5), and the remaining one set of light emitting tubes is formed. An amalgam portion (6) is formed in the tube (5), and the positioning tool (4) is provided so as to be interposed between the two sets of arc tubes (5), so that the connection is made discontinuously. The one-piece fluorescent lamp (2) is always mounted in a fixed direction with a positioning tool (4) provided so as to be interposed between the two sets of arc tubes (5). In addition, a filament (9) is formed in the two sets of arc tubes (5), and an amalgam portion (6) is formed in the other set of arc tubes (5).
The amalgam portion (6) is not affected by heat due to the heat generated by the filament (9), and as a result, the temperature of the amalgam portion (6) of the single-ended fluorescent lamp (2) is promoted. Then, the temperature difference between the respective lamp characteristic determining sections is reduced, and the characteristics when the normal lamp is attached are hardly changed, and the characteristics when the amalgam lamp is attached are improved.

That is, according to the present invention, even when lamps having different positions of the lamp characteristic determining section are used, the ambient temperature difference between the respective lamp characteristic determining sections can be reduced.

[0027]

According to the recessed lighting device of the first aspect of the present invention, even when the lamps having different positions are used, the difference in ambient temperature between the lamp characteristic determining units can be reduced. It can be made smaller.

According to the recessed lighting device of the second aspect of the present invention, in addition to the case of the first aspect, even when the lamps having different positions of the lamp characteristic determining unit are used, each lamp is used. The difference in the ambient temperature of the characteristic determining section can be more reliably reduced, and the improvement effect when the amalgam lamp is attached is further increased.

According to the recessed lighting device of the third aspect of the present invention, in addition to the case of the first or second aspect,
The positioning tool (4) can be easily attached while one side of the positioning tool (4) having a substantially L-shaped cross section is brought into contact with the inside of the reflector (1). Installation of 4) becomes very easy.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an embedded lighting device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state when the embedded lighting fixture according to one embodiment of the present invention is attached.

FIG. 3 is a cross-sectional view showing a state immediately before completion of mounting of the recessed lighting device according to one embodiment of the present invention.

FIG. 4A is a cross-sectional view showing a state after a single-base fluorescent lamp and a positioning metal fitting according to an embodiment used in the recessed lighting device of the present invention are attached, and FIG. )
(A) is a side view.

FIG. 5 is a cross-sectional view showing an embedded lighting device according to a conventional example.

FIG. 6 is a graph showing the relationship between ambient temperature and luminous flux in an embedded lighting device according to a conventional example.

FIGS. 7A and 7B are schematic diagrams showing the position of the coldest point of the normal lamp and the lamp characteristic determining unit when the Bu is turned on in the embedded lighting fixture according to the conventional example.

8 (a) and 8 (b) are schematic diagrams showing a position of an amalgam of an amalgam lamp and a lamp characteristic determining unit in an embedded lighting device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reflector 2 Single-ended fluorescent lamp 4 Positioning tool 5 Arc tube 6 Amalgam part 7 Bridge 9 Filament

Claims (3)

[Claims] 1. An embedded lighting device having a reflector and a single-base fluorescent lamp, wherein the single-base fluorescent lamp includes three sets of light-emitting tubes connected in series via a bridge and three sets of light-emitting tubes. In the tube, two sets of arc tubes are connected so as to be discontinuous. A filament is formed in the above two sets of arc tubes, and an amalgam portion is formed in the remaining one set of arc tubes. And a positioning tool provided between the two sets of arc tubes. 2. The recessed lighting device according to claim 1, wherein the positioning tool is attached to an upper portion inside the reflection plate. 3. An embedded lighting device according to claim 1, wherein said positioning tool is formed in a substantially L-shaped cross section.