JP2006196282A - Compact self-ballasted fluorescent lamp device and illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact self-ballasted fluorescent lamp device in which generation of oligomers from a holder can be suppressed, even if the temperature at the peripheral region of the holder becomes 145°C or higher. <P>SOLUTION: The fluorescent lamp 14 is projected from a cover 13, that has the base 12 and in which a lighting device is housed. The holder 15 for retaining this fluorescent lamp 14 is positioned in an environment, in which a surface temperature on a fluorescent lamp side becomes 145°C or higher during normal lighting of the fluorescent lamp 14, and forms protective films of a silicone resin 21, at least on the surface of the fluorescent lamp 14 side of the holder 15 so that the generation of oligomers from the holder 15 can be suppressed, even if the surface temperature on the fluorescent lamp side becomes 145°C or higher during normal lighting. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bulb-type fluorescent lamp device and a lighting device which are formed by bending a fluorescent lamp into a bulb shape.

  In general, a light bulb-type fluorescent lamp device has a base having a fluorescent lamp bent into an H-shape, U-shape, or saddle shape to form one meandering discharge path, and the fluorescent lamp is held by a holder. It is formed so as to be connected to a lighting device housed in a synthetic resin cover. In addition, a translucent glove is provided on the cover as needed to cover the fluorescent lamp.

In such a bulb-type fluorescent lamp, oxygen or moisture from the outside enters and exits the globe or cover and the holder may deteriorate. To prevent the deterioration, the polymer resin and nonionic interface are formed on the entire holder surface. Some have formed a protective film made of an activator (see, for example, Patent Document 1).
JP-A-6-139997

  However, in the case of a small and high-power bulb-type fluorescent lamp, the holder holding the fluorescent lamp and the lighting device is easily affected by heat generated from the fluorescent lamp and the lighting device, and the temperature of the holder rises. A conventional bulb-type fluorescent lamp uses PBT (polybutylene terephthalate) as a holder material, and its heat-resistant temperature is about 130 ° C., and it has not been regarded as a problem in conventional bulb-type fluorescent lamps. However, the holder temperature was found to be 145 ° C or higher when it was downsized to approximately the same type as a high-power bulb-type fluorescent lamp or a general bulb, and when PBT was used as the holder material, It was found that low molecular weight substances (oligomers) were generated.

  In particular, in a bulb-type fluorescent lamp device with a globe, the holder may be further heated while the fluorescent lamp is turned on to generate oligomers, or may be discolored or become brittle. In addition, in the case with a glove, when an oligomer is generated from the holder, it adheres to the inner surface of the glove in a powder form and the appearance is deteriorated.

  Thus, it has been considered to use PEI (polyetherimide), which is a heat-resistant synthetic resin having a heat-resistant temperature of about 170 ° C., as a holder material, but the cost increases when PEI is used. On the other hand, as shown in Patent Document 1, it is conceivable to provide a protective film on the holder, but the protective film made of silica-acrylic composite particle emulsion and nonionic surfactant shown in Patent Document 1 has no heat resistance. In a high temperature state of 145 ° C. or higher, the protective film itself is deteriorated.

  An object of the present invention is to provide a bulb-type fluorescent lamp device and an illumination device that can suppress the generation of oligomers from the holder even when the temperature around the holder becomes 145 ° C. or higher.

  The bulb-type fluorescent lamp device according to the first aspect of the present invention includes a cover having a base and housing a lighting device; a fluorescent lamp projecting from the cover; and holding the fluorescent lamp and normally lighting the fluorescent lamp And a holder having a fluorescent lamp side surface temperature of 145 ° C. or higher; and a silicone resin protective film formed on at least the fluorescent lamp side surface of the holder.

  In the present invention and each of the following inventions, the definitions and technical meanings of terms are as follows unless otherwise specified. The base is a base similar to an incandescent lamp provided at one end of the cover, and is inserted into the socket by, for example, a screw type. The cover is formed of resin, for example, and has a base on one end side and a holder for holding the fluorescent lamp on the other end side. A lighting device for lighting the fluorescent lamp is housed inside the cover. The inside of the cover includes the inside of the base in some cases, and includes only the inside of the base in other cases. Therefore, the shape and size of the cover can be arbitrarily designed according to the shape and size of the lighting device and the fluorescent lamp. The fluorescent lamp is held by a holder and protrudes from the cover. The fluorescent lamp is bent into an H shape, a U shape, a saddle shape, a spiral shape, or the like to form one meandering discharge path.

  The holder is placed in an environment where the fluorescent lamp side surface temperature is 145 ° C. or higher during normal lighting of the fluorescent lamp. “Normally lit” means that the fluorescent lamp is lit naked, that is, lit in the base-up state without an appliance. For example, the fluorescent lamp is steadily lit and rated lighting has elapsed for 100 hours.

  When high output and miniaturization are achieved, the degree of integration of the components and elements that make up the bulb-type fluorescent lamp device increases, and the heat generated from the fluorescent lamp and lighting device increases, so the temperature of the holder is Get higher. For the holder, for example, plastic resin PBT (polybutylene terephthalate) having a heat resistant temperature of about 130 ° C. is used. In addition, you may use PEI which is a heat resistant synthetic resin.

  The silicone resin as the protective film is formed on at least the fluorescent lamp side surface of the holder. For example, a silicone resin is applied to the fluorescent lamp side surface of the holder. The part of the holder where the fluorescent lamp side surface temperature is 145 ° C. or more during normal lighting of the fluorescent lamp is the fluorescent lamp side surface. Therefore, a silicone resin is applied to the part to form a protective film, and the temperature of the holder is Even if it becomes 145 degreeC or more, an oligomer should not be generated from a holder. Preferably, even if the temperature of the holder is 150 ° C. or higher, a protective film is formed by applying a silicone resin so that oligomers are not generated from the holder.

  The bulb-type fluorescent lamp device according to the invention of claim 2 is characterized in that, in the invention of claim 1, the protective film is aluminum instead of silicone resin.

  In the present invention, aluminum is used as a protective film in place of the silicone resin. When an aluminum film is formed by vapor deposition, for example, an aluminum foil having a thickness of 0.3 mm or less is adhered to the entire surface of the holder on the fluorescent lamp side, or when an aluminum foil is used, to the fluorescent lamp side of the holder. Let The present invention is disadvantageous in that the manufacturing cost is increased as compared with the invention of claim 1, but it is equivalent in that the holder is thermally protected.

  The bulb-type fluorescent lamp apparatus according to the invention of claim 3 is the bulb-type fluorescent lamp apparatus according to claim 1 or 2, wherein the surface on which the protective film of silicone resin or aluminum is formed is only the central part of the holder on the fluorescent lamp side, The holder is thicker and the outer peripheral side of the holder is thinner.

  In the present invention, since the part of the holder where the fluorescent lamp side surface temperature becomes high during normal lighting of the fluorescent lamp is the center part of the holder surface on the fluorescent lamp side in particular, silicone resin or aluminum is applied to the part. It is formed thickly (formation of protection means). Thereby, formation of a protection means can be simplified and material can be saved. Further, even when the temperature of the holder is 145 ° C. or higher, particularly 150 ° C. or higher, oligomers are prevented from being generated from the holder.

  According to a fourth aspect of the present invention, there is provided an illuminating device comprising: a fixture main body having a socket; and the bulb-type fluorescent lamp device according to any one of the first to third aspects mounted on the socket.

  The present invention is an illumination device equipped with the bulb-type fluorescent lamp device according to any one of claims 1 to 3. The instrument main body includes an embedded type on the ceiling or wall, a stand type stand type, a type suspended from the ceiling, and the like. According to the present invention, even when the temperature of the holder is 150 ° C. or higher, since the light bulb-type fluorescent lamp that does not generate oligomer from the holder is used, a long-life lighting device can be provided.

  According to the first aspect of the present invention, the protective film of the silicone resin is formed on the fluorescent lamp side surface of the holder so that the oligomer is not generated from the holder even when the fluorescent lamp side surface temperature becomes 145 ° C. or higher during normal lighting of the fluorescent lamp. Therefore, oligomers generated from the holder during the lighting of the fluorescent lamp can be suppressed.

  According to the invention of claim 2, since the protective film of aluminum is formed instead of the silicone resin, similarly to claim 1, oligomers generated from the holder during the lighting of the fluorescent lamp can be suppressed.

  In addition, according to the invention of claim 3, since the silicone resin or aluminum is thickly formed at the center of the holder on the fluorescent lamp side where the temperature is particularly high, the oligomer generated from the holder is more efficiently suppressed. it can. According to the invention of claim 4, a long-life lighting device can be provided.

  FIG. 1 is a partially cutaway front view of a bulb-type fluorescent lamp apparatus according to a first embodiment of the present invention. The bulb-type fluorescent lamp device 11 includes a cover 13 having a base 12, a fluorescent lamp 14, a holder 15 that holds the fluorescent lamp 14, and a transparent or diffusible globe 16 that covers the fluorescent lamp 14. . A protective film of silicone resin 21 is formed on the surface of the holder 15 on the fluorescent lamp 14 side.

  In the fluorescent lamp 14, for example, a plurality of arc tubes bent in a U shape are connected by a connecting portion to form one meandering discharge path. The fluorescent lamp 14 is held by a holder 15 and protrudes from a cover 13. In the cover 13, an electronic lighting device 22 that houses the fluorescent lamp 14 at high frequency based on power supplied through the base 12 is housed.

  FIG. 2 is a front view of the holder 15, and FIG. 3 is a bottom view of the holder 15. The holder 15 is formed in a bottomed cylindrical shape having a flange portion 17 on the upper surface portion, and the flange portion 17 includes an engaging portion 18 that engages with the cover 13. On the other hand, the bottom portion 19 of the holder 15 is provided with a plurality of through holes 20 through which the U-shaped arc tube of the fluorescent lamp 14 passes. FIG. 3 shows a case where eight through holes 20 are provided, and four U-shaped arc tubes are attached to the eight through holes 20. The bottom surface portion 19 of the holder 15 becomes the surface on the fluorescent lamp 14 side.

  Further, in the first embodiment, the lighting device 22 is formed by mounting an electrical component on a substantially circular substrate, and the substrate is dropped into the holder 15 from the side of the flange 17 so as to be supported by the holder 15. It has become.

  A protective film of silicone resin 21 is formed on the bottom surface portion 19 of the holder 15. 2 and 3 show a case where the silicone resin 21 is applied to the central portion of the holder 15 on the fluorescent lamp 14 side. The bottom surface portion 19 of the holder 15 has a high temperature in the case of a high-power bulb-type fluorescent lamp device. This is because in the case of a high-power bulb-type fluorescent lamp device, the degree of integration of components and elements constituting the device is increased, and heat generated from the fluorescent lamp 14 is increased. That is, the bottom surface portion 19 of the holder 15 is a portion where the fluorescent lamp side surface temperature becomes a high temperature of 145 ° C. or higher during normal lighting of the fluorescent lamp 14. For example, as the material of the holder 15, the heat resistant temperature is about 130 ° C. When the plastic resin PBT is used, an oligomer is generated from the holder 15.

  Therefore, even if the temperature of the holder 15 is 145 ° C. or higher, the silicone resin 21 is applied to form a protective film so that oligomers are not generated from the holder 15. Preferably, the silicone resin 21 is applied so that oligomers are not generated from the holder 15 even when the temperature of the holder 15 is 150 ° C. or higher.

  Silicone may be white or translucent containing a large amount of Ca, and one that securely adheres to the plastic resin PBT of the holder 15 is used. Even if the thickness of the silicone resin 21 is as thin as 1 mm or less, it is effective. In addition, when the discoloration of the silicone resin 21 is worrisome, you may use the thing which has light resistance and heat resistance containing Ti, Ce, etc.

  In addition, during normal lighting, the center portion of the holder 15 is particularly hot, and ultraviolet rays are also emitted from the fluorescent lamp 14, so that the silicone application surface when applying the silicone resin 21 is the holder 15 on the fluorescent lamp 14 side. It is also possible to increase the thickness of only the central portion or the central portion of the holder 15 and reduce the circumferential side of the holder 15. As a method for applying the silicone resin 21, the same silicone resin 21 is used to thicken the central portion and the circumferential side is thinned with respect to the bottom surface portion 19 of the holder. There is a method in which the central portion is applied thickly after coating.

  In the above description, the case where the protective film is formed by applying the silicone resin 21 to the fluorescent lamp 14 side of the holder 15 has been described, but the protective film may be formed of aluminum instead of the silicone resin 21. When an aluminum film is formed by vapor deposition, for example, an aluminum foil having a thickness of 0.3 mm or less is adhered to the entire surface of the holder on the fluorescent lamp side, or when an aluminum foil is used, to the fluorescent lamp side of the holder. Let

  When it confirmed by experiment using the aluminum foil whose thickness is 0.05 mm, it was confirmed that the temperature of the holder 15 including the temperature of a lighting device falls about 5 degreeC. In addition, even when an aluminum foil protective film is formed, deterioration due to ultraviolet rays can be prevented. An adhesive such as silicone is used for bonding the aluminum foil to the holder 15.

  According to the first embodiment, the fluorescent light of the holder 15 is prevented so that no oligomer is generated from the holder 15 even when the fluorescent lamp side surface temperature is 145 ° C. or higher, preferably 150 ° C. or higher during normal lighting of the fluorescent lamp 14. Since a protective film of silicone resin or aluminum is formed on the surface on the lamp 14 side, oligomers generated from the holder 15 during the lighting of the fluorescent lamp 14 can be suppressed.

  FIG. 4 is a cross-sectional view of a lighting device according to the second embodiment of the present invention. The second embodiment is an illuminating device 24 in which the bulb-type fluorescent lamp device 11 of the first embodiment is mounted on an instrument main body 23. It has a socket 25 in which the bulb-type fluorescent lamp device 11 is mounted, and a reflector 26 that reflects light emitted from the bulb-type fluorescent lamp device 11. The socket 25 is connected to the terminal block 27 with an electric wire 28. In FIG. 4, the instrument body 23 is an embedded type embedded in the ceiling, but may be an embedded type embedded in a wall, a stand type stand type, or a type suspended from the ceiling. May be.

  According to the second embodiment, even when the temperature of the holder becomes 150 ° C. or higher, since the light bulb-type fluorescent lamp that does not generate oligomer from the holder is used, a long-life lighting device can be provided.

1 is a front view of a bulb-type fluorescent lamp device according to a first embodiment of the present invention. The front view of the holder of the lightbulb-type fluorescent lamp apparatus concerning the 1st Embodiment of this invention. 1 is a top view of a holder of a bulb-type fluorescent lamp device according to a first embodiment of the present invention. Sectional drawing of the illuminating device concerning the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Light-bulb-type fluorescent lamp apparatus, 12 ... Base, 13 ... Cover, 14 ... Fluorescent lamp, 15 ... Holder, 16 ... Globe, 17 ... Gutter, 18 ... Locking part, 19 ... Bottom part, 20 ... Through-hole, DESCRIPTION OF SYMBOLS 21 ... Silicone resin, 22 ... Lighting apparatus, 23 ... Appliance main body, 24 ... Illumination device, 25 ... Socket, 26 ... Reflector, 27 ... Terminal block, 28 ... Electric wire

Claims (4)

A cover having a base and containing a lighting device;
A fluorescent lamp protruding from the cover;
A holder that holds the fluorescent lamp and has a fluorescent lamp side surface temperature of 145 ° C. or higher during normal lighting of the fluorescent lamp;
A protective film of silicone resin formed on at least the fluorescent lamp side surface of the holder;
A bulb-type fluorescent lamp device comprising:   2. The bulb-type fluorescent lamp device according to claim 1, wherein the protective film is made of aluminum instead of silicone resin.   3. The light bulb according to claim 1 or 2, wherein the surface on which the protective film of silicone resin or aluminum is formed is formed only in the central portion of the holder on the fluorescent lamp side, or thickened at the central portion of the holder and thinned on the outer peripheral side of the holder. Fluorescent lamp device. An instrument body having a socket;
The bulb-type fluorescent lamp device according to any one of claims 1 to 3, which is attached to a socket;
An illumination device comprising:

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