JP5519820B1 - Reflector cold cathode fluorescent lamp - Google Patents

Abstract

【Task】
To provide a reflector cold cathode fluorescent lamp or a reflector cold cathode fluorescent lamp luminaire that can be used as illumination.
[Solution]
In order to solve the problem, a cold cathode fluorescent lamp is installed in the outer tube in which a reflecting material is applied to a part of the inner surface of the cylindrical tube in the longitudinal direction by using an elastic member holder or a holder fixture, and double By adopting a structure, a dazzling and bright reflector cold-cathode fluorescent lamp that suppresses transmission attenuation without changing the emitted light from the cold-cathode fluorescent lamp with completely diffused radiation to directional radiation and does not pass through the tube wall phosphor multiple times. Is to manufacture.
[Selection] Figure 4

Description

    The present invention relates to a reflector cold cathode fluorescent lamp.

Cold cathode fluorescent lamps that are generally sold are inexpensive and have a very long life and high brightness, and are therefore used in backlights for televisions and personal computers. However, since the illuminance is low even at high luminance, the number of manufactures has been drastically reduced due to the widespread use of LED lighting fixtures and LED lamps.
In addition, aperture fluorescent lamps and reflector fluorescent lamps manufactured by directly applying a reflective material to fluorescent lamps as high-power fluorescent lamps are sold at high prices. The aperture fluorescent lamp is a fluorescent lamp that has an opening from which a part of the fluorescent layer is removed after forming the fluorescent layer on the inner surface of the glass tube and emits visible light and ultraviolet light. It is publicly announced that the brightness is 150% to 200% of that of fluorescent lamps, but since the radiation is from a narrow opening, looking directly at the opening makes the emitted light sharp and easily causes glare. Used as lighting and not used as lighting. The ultraviolet light inside the fluorescent lamp passes through the tube wall phosphor portion and becomes visible light, and is emitted outside the fluorescent lamp. The light is reflected from the reflector applied to the outside of the tube wall, passes through the tube wall phosphor portion on the opposite side from the position where it passes through the tube wall phosphor portion, and is emitted from the open portion without the reflecting mirror of the fluorescent lamp. It has been announced that the maximum brightness is about 170% of that of ordinary fluorescent lamps.

Japanese Patent Laid-Open No. 11-67152 JP 2006-127868 A

The problem to be solved by the present invention is that the hot-cathode fluorescent lamp has a low cost for the lamp body and electricity, but has a lifetime of 3000 hours to 12000 hours, and maintenance costs such as fluorescent lamp replacement (fluorescent lamp cost / storage cost and replacement labor cost) Etc.) is a large expense. Further, there is a problem that the light output of the fluorescent lamp decreases when the ambient temperature is low. The total luminous flux of the 14w cold cathode fluorescent lamp is 1000 lm and the lifetime is 50,000 to 100,000 hours. The total luminous flux of the hot cathode fluorescent lamp 20wFL20SD is 1010 lm and the lifetime is 6000 hours with no difference in illuminance but power consumption Is 70%, the calorific value is less than half, and the life is more than 10 times. Even if there was a long-life cold cathode fluorescent lamp, the hot cathode fluorescent lamp was not replaced. This is because the cold cathode fluorescent lamp is difficult to handle and has low illuminance. For this reason, replacement with LED luminaires and LED lamps with a half life has progressed, and the number of manufactured products has been drastically reduced to 30% or less. In addition, hot cathode fluorescent lamps have been shifted to LED fluorescent lamps and reduced in association with the occurrence of many injuries due to the fall or breakage of fluorescent tubes during an earthquake.
However, high-luminance LED lighting fixtures and LED lamps often have LED elements that have a shorter lifetime than the display due to high heat generation temperature, element degradation due to their own ultraviolet rays, solar ultraviolet rays, and heat generation. In addition, non-lighting or the like due to shortening of the lifetime due to variations in individual differences of LED elements has also occurred.

In order to solve the problem, the illuminance is obtained by irradiating the cold cathode fluorescent lamp, which is a rod-shaped light source of omnidirectional diffused radiation having a long lifetime but low illuminance, only in the target direction.

  In addition, the cold cathode fluorescent lamp is thin and easily broken, so if you fix only both ends of the cold cathode fluorescent lamp, it will bend and bend, causing a lot of damage due to vibration and impact. It is to install using a cold cathode fluorescent lamp holder.

  Furthermore, the cold cathode fluorescent lamp is designed to be resistant to changes in the ambient temperature because the light output decreases when the ambient temperature is low.

In the present invention, the illuminance of the cold cathode fluorescent lamp, which is the omnidirectional diffused radiation of the rod-shaped light source, is controlled by the reflector to greatly increase the illuminance.
Further, as countermeasures against climate change and breakage of the outer tube of the cold cathode fluorescent lamp, it is possible to cope with environmental changes by reducing the amount of heat transfer in reducing the amount of heat transfer material in the tube by lowering the atmospheric pressure in the outer tube from the external pressure.
In addition, in order to reduce scattering of glass fragments when cold cathode fluorescent lamps or cold cathode fluorescent lamp lighting fixtures are dropped or damaged, the outer wall of the outer tube is coated with a resin film to reduce scattering and implosion effect. To increase safety.

FIG. 1 is a bottom view of a reflector cold-cathode fluorescent lamp in which one straight-tube cold-cathode fluorescent lamp is installed in the outer tube with an elastic member in the outer tube as an example of an embodiment of the present invention. FIG. 2 is an enlarged front view of an elastic member for installing one straight tube cold cathode fluorescent lamp inside the outer tube in an example of the embodiment of the present invention. FIG. 3 is an enlarged front view of an elastic member for installing two straight tube cold cathode fluorescent lamps in the outer tube in an example of the embodiment of the present invention. FIG. 4 is an example of an embodiment of the present invention, which is a cold cathode fluorescent lamp holder fixture with an elastic member having only a ginkgo-shaped cold cathode fluorescent lamp holder inside the outer tube, and rectifies with two cold cathode fluorescent lamps. It is the cross-sectional perspective view seen from the bottom face direction of the reflector cold cathode fluorescent lamp which installed the circuit and the inverter storage case. FIG. 5 is an example of a part constituting the embodiment of the present invention, and a cold cathode with an elastic member having a ginkgo section in which two straight tube cold cathode fluorescent lamps are installed in an outer tube and having only a cold cathode fluorescent lamp holding portion. It is a perspective view of a fluorescent lamp holder fixture. FIG. 6 is a perspective view of a cold cathode fluorescent lamp holder fixture with an elastic member having a ginkgo cross section in which two straight tube cold cathode fluorescent lamps are installed in the outer tube as an example of components constituting the embodiment of the present invention. It is. FIG. 7 is a perspective view of a cold cathode fluorescent lamp holder fixture with an elastic member having a corrugated cross section in which two straight tube cold cathode fluorescent lamps are installed in the outer tube as an example of components constituting the embodiment of the present invention. It is. FIG. 8 is an example of an embodiment of the present invention. The cold cathode fluorescent lamp holder fixture with an elastic member having only the cold cathode fluorescent lamp holder 4a shown in FIG. It is the side view of the reflector cold cathode fluorescent lamp which made the outer tube | pipe transparent and was represented with the dotted line when it installed. FIG. 9 shows an example of an embodiment of the present invention, in which one U-shaped cold cathode fluorescent lamp is fixed to a cold cathode fluorescent lamp holder fixture with an elastic member, and is installed in a rectifier circuit and an inverter storage case in an outer tube. It is a bottom view of a cold cathode fluorescent lamp. FIG. 10 shows an example of an embodiment of the present invention. A reflector cold cathode fluorescent lamp illumination in which one U-shaped cold cathode fluorescent lamp is annularly formed and fixed to a cold cathode fluorescent lamp holder fixture with an elastic member and the cover is removed. It is a bottom view of an instrument. FIG. 11 is a bottom view of a reflector cold cathode fluorescent lamp lighting fixture using a mirror surface fixture made of metal or resin by forming one or a plurality of cold cathode fluorescent lamps in a spiral shape in an example of an embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 shows an example of an embodiment of the present invention in which an outer tube 1 is coated with a reflective material (hereinafter referred to as a mirror surface 3) in a part of the inner surface of an outer cylindrical tube (hereinafter referred to as an outer tube 1) in the longitudinal direction. The cold cathode fluorescent lamp 2 is installed in the vicinity of the tube wall using a plurality of elastic members 4 and fixed connectors 10 to form a double structure, so that the diffused radiant light behind the cold cathode fluorescent lamp 2 can be transmitted to the tube wall. It is the bottom view of the reflector cold cathode fluorescent lamp which reflected only the other side of the mirror surface 3 of this, and increased only the irradiation light quantity. When the 14w cold cathode fluorescent lamp 1 is installed between the focal position on the arcuate central portion (on the mirror axis) of the mirror surface 3 and in the vicinity of the tube wall, the irradiation angle of the emitted light from the cold cathode fluorescent lamp 2 is 360. The irradiation angle was about 115 degrees from the complete diffuse radiation angle of 15 degrees. However, the vertical horizontal luminous intensity 1 m ahead of the cold cathode fluorescent lamp 2 was changed from 101 cd to 384 cd. Since the vertical horizontal luminous intensity 1 m ahead of the 20w hot cathode fluorescent lamp is 101 cd, it is possible to obtain three times or more visible light with 70% power. The ratio of the diameter of the cold cathode fluorescent lamp to the inner diameter of the outer tube is considered best from 3:10 to 1:10. The visible light of the fluorescent lamp is attenuated by about 20% to 30% when passing through the tube wall phosphor portion. In the reflector cold cathode fluorescent lamps that are generally sold, 50% or more of the reflected light from the reflector part is transmitted and attenuated twice through the tube wall phosphor part, and the visible light intensity is increased by only 70% at the maximum. do not do. However, if a structure in which the light emitted from the cold cathode fluorescent lamp of the present invention is reflected by a reflecting mirror is used, the brightness increases by 150% or more, but glare is unlikely to occur because the area of the opening is wide. That is, it is a structure that can increase visible light more than double that is not dazzling. Further, since the rectifier circuit and the inverter installation case 6 can be used externally, a drawing of an external type cold cathode fluorescent lamp is shown. By sealing the cold cathode fluorescent lamp in which the air in the outer tube 1 is lower than the external pressure and the outer tube is coated with a resin film, the temperature is not easily affected by the environmental change from the outside of the outer tube 1, and the impact is reduced. It became a reflector cold cathode fluorescent lamp with implosion at the time of breakage due to reducing the diffusion of fragments.
FIG. 2 shows an example of components constituting the embodiment of the present invention. The cold cathode fluorescent lamp 2 has a thin tube wall and is fragile. When only the both ends of the cold cathode fluorescent lamp are fixed, the cold cathode fluorescent lamp 2 is bent or curved and damaged by vibration or impact. Many situations occur. Further, when the outer tube 1 is made of polycarbonate, in the case of a long straight tube, deflection and deformation are caused by the weight of the resin, so that the outer tube 1 is mostly made of a glass tube. In order to prevent breakage, it is necessary to hold the cold cathode fluorescent lamp 2 at a plurality of locations. It is very difficult to process a hole for attaching the holder to the outer tube 1 and install the holder in a small hole inside the outer tube. Therefore, an elastic member 4 (hereinafter simply referred to as an elastic member) such as a forming spring or a torsion spring capable of fixing the cold cathode fluorescent lamp 2 to the tube wall of the outer tube 1 while holding the cold cathode fluorescent lamp 2 near the tube wall in the outer tube 1. It is to be installed using a member). An arc-shaped cold cathode fluorescent lamp holding portion 4a for holding the cold cathode fluorescent lamp 2 is provided at the center portion, and arc-shaped extension portions 4b are provided at both ends of the holding portion for inserting itself into the outer tube 1. It is a front view of the elastic member 4 for one cold cathode fluorescent lamp provided with the instrument insertion hole 4c.
FIG. 3 is a front view of a plurality of elastic members 4 for cold cathode fluorescent lamps as an example of components constituting the embodiment of the present invention. A plurality of holding portions 4a for holding the cold cathode fluorescent lamp 2 are provided at positions shifted from the center portion, and arc-shaped extension portions 4b are provided at both ends of the holding portion of the connection holding portion 4a to remove the elastic member 4. It is a front view of the elastic member 4 for two cold cathode fluorescent lamps provided with the instrument insertion hole 4c for inserting in the pipe | tube 1. FIG.
FIG. 4 is an example of an embodiment of the present invention, and shows a cross section having only two cold cathode fluorescent lamps 2 and a cold cathode fluorescent lamp holding part 4a in the vicinity of the tube wall of the mirror surface 3 in which a reflecting material is applied to the inner surface of the outer tube 1. It is the cross-sectional perspective view seen from the bottom face side of the reflector cold cathode fluorescent lamp which has a rectifier circuit and the inverter storage case 6 in the reflector fluorescent lamp fixed with the cold cathode fluorescent lamp holder fixture 5 with a ginkgo type elastic member. Even if light is incident on one mirror surface from a plurality of light sources, the reflected light is reflected without being influenced by other light sources. Since the mirror surface of the inner surface of the outer tube is an arc-shaped curved surface, when a cold cathode fluorescent lamp is installed near the mirror surface, a straight line connecting the center position of the cold cathode fluorescent lamp and the mirror surface behind the cold cathode fluorescent lamp becomes the mirror axis. A plurality of cold cathode fluorescent lamps can be installed in the outer tube, and most of the irradiation area of each cold cathode fluorescent lamp is irradiated twice.
FIG. 5 is a perspective view of the cold cathode fluorescent lamp holder fixture 5 used in FIG. 4 as an example of the parts constituting the embodiment of the present invention. A plurality of elastic members 4 each having only a holding portion 4a for holding the cold cathode fluorescent lamp 2 are held, and a protruding portion in which a reflective material is applied is provided between the holding portions.
FIG. 6 is an example of a part constituting the embodiment of the present invention, and includes a plurality of elastic members 4 for fixing two straight tube cold cathode fluorescent lamps 2 in the outer tube 1 of the fluorescent lamp of the present invention, and the cross section is ginkgo. It is a perspective view of the cold cathode fluorescent lamp holding fixture fixture 5 of a type | mold elastic member.
FIG. 7 is an example of a part constituting the embodiment of the present invention, and includes a plurality of elastic members 4 for fixing two straight tube cold cathode fluorescent lamps 2 in the outer tube 1 of the fluorescent lamp of the present invention, and the cross section is wavy. It is a perspective view of the cold cathode fluorescent lamp holding fixture fixture 5 of a type | mold elastic member.
FIG. 8 shows an example of an embodiment of the present invention, in which a rectifier circuit and an inverter storage case 6 are coupled to a cold cathode fluorescent lamp holder fixture 5 to which a cold cathode fluorescent lamp 2 of a type using two cold cathode fluorescent lamps is connected. Then, connect to the electrode member 10 with the fixed connector 9 on the opposite side of the rectifier circuit and the inverter storage case 6 and insert it without using a special insertion tool to make the outer tube 1 (cleared for easy understanding) It is the side view of the reflector cold cathode fluorescent lamp which reduced the manufacturing process and the manufacturing cost by having connected to the electrode member 10 inserted in the display connector and connected to the fixed connector 9.
FIG. 9 shows an example of an embodiment of the present invention, in which one U-shaped cold cathode fluorescent lamp 2 is provided in the vicinity of the tube wall on the center portion (on the mirror axis) of the mirror surface 3 in the outer tube 1 and a plurality of elastic members. FIG. 6 is a bottom view of the reflector cold cathode fluorescent lamp when the cold cathode fluorescent lamp holder 5 is fixed and the rectifier circuit and the inverter storage case 6 are installed in the outer tube 1.
FIG. 10 shows an example of an embodiment of the present invention, in which an U-shaped mirror device 7 having an annular shape formed in an upper half of a circular cross section or two-thirds is formed on a cold cathode fluorescent lamp holder 5 with an elastic member. FIG. 6 is a bottom view of a reflector cold cathode fluorescent lamp or reflector cold cathode fluorescent lamp illuminating device in which a letter-shaped cold cathode fluorescent lamp 2 is annularly formed and fixed, and a cover 8 is removed.
FIG. 11 shows one or a plurality of cold cathode fluorescent lamps 2 spirally formed on a mirror surface device 7 in which half of the upper surface side or two-thirds of a circular cross section is spirally formed as an example of the embodiment of the present invention. The bottom surface of the reflector cold cathode fluorescent lamp or the reflector cold cathode fluorescent lamp lighting fixture when the cold cathode fluorescent lamp holding portion 4a is fixed by the elastic member 4 connected in a line in the same direction and the rectifier circuit and the inverter storage case 6 are installed. It is the perspective view seen from the direction. In cold-cathode fluorescent lamps 2 other than straight tubes such as an annular tube, N tube, wave tube, and spiral tube, a curved surface made of resin or metal and a mirror surface 3 portion of the outer tube 1 combined with a straight tube are integrally formed. What is necessary is just to manufacture the mirror surface fixture 7 manufactured as a reflector cold cathode fluorescent lamp which covers the cover 8, or a reflector cold cathode fluorescent lamp lighting fixture.

DESCRIPTION OF SYMBOLS 1 Outer tube 2 Cold cathode fluorescent lamp 3 Mirror surface 4 Elastic member 5 Cold cathode fluorescent lamp holder with an elastic member 6 Rectifier circuit and inverter storage case 7 Mirror surface device 8 Cover 9 Electrode member 10 Fixed connector

Claims (8)

An outer tube having a reflecting portion on a part of the inner surface in the circumferential direction has an arc-shaped holding portion for holding the cold cathode fluorescent lamp at a position closer to the tube wall side than the focal position of the reflecting portion, and both ends of the holding portion A reflector cold cathode fluorescent lamp provided with a cold cathode fluorescent lamp holder having an arcuate extension.
The reflector cold cathode fluorescent lamp according to claim 1, wherein the cold cathode fluorescent lamp holder has a plurality of the holding portions. The reflector cold-cathode fluorescent lamp according to claim 2, wherein the reflecting portion is formed of a cold-cathode fluorescent lamp holder fixture having a protruding portion coated with a reflective material between the plurality of holding portions. The reflector cold-cathode fluorescent lamp according to claim 1, wherein both ends of the arc-shaped extension of the holder are provided with arc-shaped or circular terminal portions. The reflector cold-cathode fluorescent lamp lighting fixture according to claim 1, wherein the cold-cathode fluorescent lamp holders are connected in series. 4. The reflector cold cathode fluorescent lamp according to claim 3, wherein a fixture for fixing the cold cathode fluorescent lamp holder is coupled to a case for housing the inverter. The reflector cold cathode fluorescent lamp according to claim 1, wherein the pressure in the outer tube is lower than the external pressure. The reflector cold cathode fluorescent lamp according to claim 1, further comprising a protective film on an outer surface of the outer tube.