CN101606223A - Compact fluorescent lamp - Google Patents
Compact fluorescent lamp Download PDFInfo
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- CN101606223A CN101606223A CNA200880004332XA CN200880004332A CN101606223A CN 101606223 A CN101606223 A CN 101606223A CN A200880004332X A CNA200880004332X A CN A200880004332XA CN 200880004332 A CN200880004332 A CN 200880004332A CN 101606223 A CN101606223 A CN 101606223A
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Abstract
The object of the present invention is to provide a kind of compact fluorescent lamp, its above compact fluorescent lamp of 8 posts for using liquid mercury, and this compact fluorescent lamp forms when lighting as cold spot at the luminous tube cephalic par and is about 50 ℃ part, and then can reduce near the temperature the lamp holder.A kind of compact fluorescent lamp, the luminous tube that its U-shaped pipe constitutes is more than 8, and do not carry out the restriction of mercury air pressure, it is characterized in that: at least 1 top cross-section in the U-shaped pipe is for having fabric width portion and from this fabric width portion to the more and more thinner shape of the cephalic par at top near the crotch of U-shaped pipe, make the tube axial direction inside dimension (L1) at top satisfy 11≤L1≤17 (unit [mm]) (1), make the size (L2) of tube axial direction of the cephalic par near the crotch of U-shaped pipe fabric width portion and top satisfy L1-7≤L2≤L1-2 (unit [mm]) (2).
Description
Technical field
The present invention relates to the above compact fluorescent lamp of 8 posts.
Background technology
In the compact fluorescent lamp of 6 posts, the length of the lamp of the logical 5200lm (lumen) of 70W, light is 220mm, has the problem that is not suitable for narrow place etc. during actual the use.Promptly, aspect vertical baried type downlight, the height in the ceiling is a problem, if lamp surpasses 210mm, has following problems, that is: occur cooperating its ligthing paraphernalia of designing can not be installed to the situation of ceiling, said 210mm is considered to a upper limit.For this reason, people have worked out a kind of scheme (for example, referring to patent documentation 1) that replaces 6 posts and use 8 posts and length is shortened.
Compare with the situation of 6 posts, the energy of the fluorescent tube radiation that the compact fluorescent lamp of 8 posts is mutual and must increase in the conduction heat that lamp holder etc. is located, thus cause temperature to rise.In the type that has imported liquid mercury, because of evaporation not is residual mercury accumulated the temperature of cold portion be higher than optimal value, therefore, mercury air pressure is higher than optimal value, the efficient reduction.For this reason, usually, adopt by importing the method that amalgam reduces mercury air pressure.But, use the mode of this amalgam to have following problems.
(1) when environment that the air flows temperature that is in because of air-conditioning etc. is difficult to rise, temperature can be far below the Optimal Temperature of amalgam, under this state bright (being called the supercooling problem) inadequately.
(2) because Optimal Temperature is higher, use under the situation of common liquid mercury, can be darker before reaching this temperature.
For this reason, people are in mode that adopt to use liquid mercury and improve on the direction of shortcoming of this mode and carried out studying (for example, referring to patent documentation 2).
Patent documentation 1: TOHKEMY 2005-209590 communique
Patent documentation 2: TOHKEMY 2003-217506 communique
As mentioned above, the tendency that high-power lamp has temperature to raise, therefore, cold-point temperature raises, and mercury air pressure is compared with luminous optimal value and is uprised.In order to make this mercury air pressure meet Optimal Temperature for luminous, people have adopted the method that amalgam is set in the appropriate location of lamp.
About using the lamp of amalgam, because of the influence of air-conditioning, extraneous air, the temperature of lamp can not rise sometimes, stagnates the state (being called supercooling) of the optimal value in far below the use amalgam time.In addition,, need the time till reaching its Optimal Temperature after lighting, the luminous flux problem slowly that rises so exist because the optimal value of amalgam is higher.
The tendency that the temperature that the compact fluorescent lamp of 8 posts is compared with 6 posts lamp raises.This be since the volume density of the compact fluorescent lamp of 8 posts than 6 causes that post is big.
Therefore, in order to solve the supercooling problem and to light back luminous flux these two problems of slow problem that rise, use the high liquid mercury of mercury air pressure to be prerequisite to replace amalgam, when using high 8 posts of light temperature instead replacing 6 posts, must form the part of the cold spot that becomes luminous tube that does not have in the amalgam type.
In addition, because lamp holder is resin system, so the problem that resin worsens when existing temperature to uprise.
In addition, the problem of the maximum when using this liquid state mercury be the coldest temperature than optimal value height, about this point, people consider that by the structural design of cold portion be that the structure that temperature is difficult to raise is eliminated.Yet its temperature can further rise when lighting in ligthing paraphernalia, and mercury air pressure rose its optimal value significantly.This rising than the mercury air pressure that temperature rising of amalgam brings is bigger.Occurred the temperature in should ligthing paraphernalia risen and but do not made the undue problem that reduces of efficient.
Summary of the invention
The present invention makes in order to address the above problem, its purpose is to provide a kind of compact fluorescent lamp, its above compact fluorescent lamp of 8 posts for using liquid mercury, this compact fluorescent lamp forms when lighting as cold spot at the luminous tube cephalic par and reaches about 50 ℃ part, and can further reduce near the temperature the lamp holder.
In addition, the present invention makes in order to address the above problem, its purpose is to provide a kind of compact fluorescent lamp, and its above compact fluorescent lamp of 8 posts for using liquid mercury is even this compact fluorescent lamp also can obtain enough total light fluxs in ligthing paraphernalia.
The compact fluorescent lamp that the present invention relates to, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and do not carry out the restriction of mercury air pressure, it is characterized in that, at least 1 top cross-section in the U-shaped pipe is for having fabric width portion and the more and more thinner shape of the cephalic par from fabric width portion to the top near the crotch of U-shaped pipe, make the tube axial direction inside dimension L1 at top satisfy 11≤L1≤17 (unit [mm]) (1), make the size L2 of tube axial direction of the cephalic par near the crotch of U-shaped pipe fabric width portion and top satisfy L1-7≤L2≤L1-2 (unit [mm]) (2).
In addition, the compact fluorescent lamp that the present invention relates to is characterized in that making the same length of the tube axial direction of all U-shaped pipes.
In addition, the compact fluorescent lamp that the present invention relates to is characterized in that the position of crotch of all U-shaped pipes is roughly the same.
In addition, the compact fluorescent lamp that the present invention relates to is characterized in that the shape of opposed U-shaped pipe is identical.
The compact fluorescent lamp that the present invention relates to, wherein the luminous tube of U-shaped pipe formation is more than 8 posts and has charged into liquid mercury, it is characterized in that, the distance of filament and lamp holder baseline is that the junction surface between Lf, the U-shaped pipe and the distance of lamp holder baseline are La, and this Lf, La satisfy so: 11≤Lf≤17 (unit [mm]) (4), Lf-19≤La≤Lf-13 (unit [mm]) (5).
And then, the compact fluorescent lamp that the present invention relates to, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and do not carry out the restriction of mercury air pressure, it is characterized in that the distance L c between the distance L b between the fluorescent tube of U-shaped pipe, U-shaped pipe satisfies 1.5≤Lb≤3 (unit [mm]) (11), 1.5≤Lc≤3 (unit [mm]) (12).
In addition, the compact fluorescent lamp that the present invention relates to, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and do not carry out the restriction of mercury air pressure, it is characterized in that, possess polygonal lamp head shell, lamp head shell has opposed and keep the peristome of luminous tube with polygonal summit, between the polygonal summit of lamp head shell and the peristome apart from the mid point on the circumcircle of s, lamp head shell and a polygonal limit apart from the satisfied 3≤s of p≤6 (unit [mm]) (13), 1≤p (unit [mm]) (14).
The compact fluorescent lamp that the present invention relates to, its top form the shape that the cross section is a wedge shape, and satisfy formula (1)-(2), thus, can form when lighting as cold spot at the luminous tube cephalic par and are about 50 ℃ part.
In addition, the compact fluorescent lamp that the present invention relates to, it is identical shaped making opposed U-shaped pipe, thereby, can guarantee luminous flux.
In addition, the compact fluorescent lamp that the present invention relates to satisfies formula (4)-(5), thus, can reduce near the temperature of lamp holder, and the length on discharge road can not shorten, and need not to worry that cold spot changes to the lamp holder side and cold-point temperature no longer is an Optimal Temperature from U-shaped pipe top 2a.
And then, in the mode of use amalgam in the past, reduce distance L b, the distance L c between the U-shaped pipe between the fluorescent tube of U-shaped pipe in order to suppress supercooling.The compact fluorescent lamp that the present invention relates to is the mercury lead-in mode that does not carry out mercury air pressure restriction, therefore, in order to tackle supercooling, can make distance L b, the distance L c between the U-shaped pipe between the fluorescent tube of U-shaped pipe bigger than in the past.Promptly, make it satisfy formula (11), (12), thereby, under the situation of ligthing paraphernalia of packing into, owing to the convection current around the lamp can successfully be carried out having reduced the temperature rising and improve efficient, and then, the effect of leading to the outside easily towards the light of the inboard of lamp radiation is also arranged, so can improve total light flux.
In addition, the compact fluorescent lamp that the present invention relates to, make and satisfy formula (13), (14) apart from the mid point on the circumcircle of s, lamp head shell and a polygonal limit apart from p between the polygonal summit of lamp head shell and the peristome, thereby, be used under the situation of lighting device, can obtain and lampshade portion between enough spaces, can improve the convection current in the lampshade portion.Thus, the temperature that can suppress compact fluorescent lamp rises, and improves total light flux.
Description of drawings
Fig. 1 is the figure of expression execution mode 1, is the integrally-built figure of expression compact fluorescent lamp 1.
Fig. 2 is the figure of expression execution mode 1, is the vertical view of lamp head shell 3.
Fig. 3 is the figure of expression execution mode 1, is the part longitudinal sectional view of U-shaped pipe 2.
Fig. 4 is the figure of expression execution mode 1, is the cutaway view of the U-shaped pipe top 2a of U-shaped pipe 2.
Fig. 5 is the figure of expression execution mode 1, is the figure of expression with the 1st variation of variform U-shaped pipe 20 and 21 combinations of U-shaped pipe.
Fig. 6 is the figure of expression execution mode 1, is the figure of expression with the 2nd variation of variform U-shaped pipe 20 and 22 combinations of U-shaped pipe.
Fig. 7 is the figure of expression execution mode 2, is near the figure of lamp holder baseline of expression compact fluorescent lamp 1.
Fig. 8 is the figure of expression execution mode 3, is the integrally-built figure of expression compact fluorescent lamp 101.
Fig. 9 is the figure of expression execution mode 3, is the vertical view of lamp head shell 103.
Figure 10 is the figure of expression execution mode 3, is the part longitudinal sectional view of U-shaped pipe 102.
Figure 11 is the figure of expression execution mode 4, is the vertical view of lamp head shell 103.
Symbol description: 1,101... compact fluorescent lamp; 2,102...U shape pipe; 2a...U shape pipe top; 2b... fabric width portion; 2c... junction surface; 3,103... lamp head shell; 3a, 103a... sidewall; 3b, 103b... par; 3c, 103c... peristome; 4,104... lamp holder; 4a, 104a... socket pin; 5,105... luminous tube; 6... filament; 102a... junction surface.
Embodiment
Fig. 1 to Fig. 6 is the figure of expression execution mode 1, Fig. 1 is the integrally-built figure ((a) is front view for vertical view, (b)) of expression compact fluorescent lamp 1, Fig. 2 is the lamp head shell vertical view, Fig. 3 is the part longitudinal sectional view of U-shaped pipe 2, Fig. 4 is the cutaway view of the U-shaped pipe top 2a of U-shaped pipe 2, Fig. 5 is the figure of expression with the 1st variation of variform U-shaped pipe 20 and 21 combinations of U-shaped pipe, and Fig. 6 is the figure of expression with the 2nd variation of variform U-shaped pipe 20 and 22 combinations of U-shaped pipe.
As shown in Figure 1, compact fluorescent lamp 1 possesses: with 4 U-shaped pipes 2 (glass lamp) between the sidewall of end (junction surface 2a) each other fusion engage, thereby what is formed by 8 glass lamps is the discharge luminous tube 5 on road of 1 serpentine on inner body; Having the par 3b that fixes this luminous tube 5 by bonding grade is the lamp head shell 3 of octagonal sidewall 3a with the cross section that links to each other with this par 3b; Has lamp holder 4 with this lamp head shell 3 socket pin 4a chimeric and that be electrically connected with the lead-in wire of luminous tube 5.
Though diagram not is provided with filament in 2 U-shaped pipes 2 as the both ends on discharge road.Be coated with electron radiation substance on the filament.Formed the discharge road between 2 filaments.
In addition, the material of lamp head shell 3 is PET (polyethylene terephthalate), LCP (liquid crystal polymer), PBT (polybutylene terepthatlate) etc.
As shown in Figure 2, lamp head shell 3 with par 3b that the end of sidewall 3a links to each other on be provided with 8 peristome 3c, these 8 peristome 3c are used for fixing by bonding grade the luminous tube 5 of 8 posts.
Another of sidewall 3a is open-ended, and the lamp holder 4 with socket pin 4a is embedded in herein.
Here, describe, but the present invention also is applicable to the compact fluorescent lamp that 8 posts such as 10 posts, 12 posts are above with the compact fluorescent lamp 1 of 8 posts.
The compact fluorescent lamp 1 of Fig. 1 is not for to use the type of amalgam, and imported liquid mercury in luminous tube.About using the lamp of amalgam, because the influence of air-conditioning and extraneous air, the temperature of lamp can not rise sometimes, stagnates the state (being called supercooling) of the optimal value in far below the use amalgam time.In addition,, need the time till reaching its Optimal Temperature after lighting, the luminous flux problem slowly that rises so exist because the optimal value of amalgam is higher.Present embodiment is used to address these problems.
The method that imports liquid mercury in luminous tube has following several, but points out the method that mercury moves independently in course of action at least.
(1) directly pack into the method for highly purified liquid mercury.
(2) charge into Hg (mercury) with the form that impregnated among TiZn or the Fe, by lighting or heating, the method that the framework of Hg and TiZn or Fe is moved independently.
Adopt the method for (2) in the present embodiment.
Used the mode of amalgam, except the temperature of adjusting amalgam, can also change mercury air pressure by the ratio of adjusting the element that constitutes amalgam.And then, because amalgam is fixed in pipe, perhaps be fixed in the lead-in wire of supporting filament, thereby the position can be fixed also.This situation is called " carrying out the restriction of mercury air pressure ".
Relative therewith, imported under the situation of liquid mercury, light in the process and only determine mercury air pressure, and because liquid mercury activity, the position that temperature is minimum is free movable, so the position can not be fixed by temperature with the residual mercury of liquid state.This is called " not carrying out the restriction of mercury air pressure ".
4 the U-shaped pipes 2 that constitute luminous tube 5 are identical shaped.The external diameter of pipe of U-shaped pipe 2 is 10～15mm, and the length L of compact fluorescent lamp 1 (distance of the head end of the root of socket pin 4a and luminous tube 5 (referring to Fig. 1)) is 150～210mm, but is that example describes with 180mm at this.
If the length L of compact fluorescent lamp 1 is longer, vertical ceiling embedded type downlight may with interference in the ceiling.Therefore 210mm is made as the upper limit.In addition, if shorter, then luminous efficiency reduces.Therefore 150mm is made as lower limit.
If the external diameter of pipe of U-shaped pipe 2 is thinner, then efficient reduces, and discharge voltage is excessive, thereby the restriction in the design of converter is increased.Therefore, 10mm is made as lower limit.In addition, if thicker, then the radial dimension of luminous tube 5 increases, and it is difficult that the design of utensil becomes.Can go wrong aspect the cost of converter because electric current is also excessive.Therefore 15mm is made as the upper limit.
Such as has been described, compare with the length 220mm of 6 post compact fluorescent lamps of 70W, approximately shortened 40mm.
Because luminous tube 5 is 8 posts, thereby the temperature of luminous tube 5 is compared rising to some extent with the lamp of 6 posts of identical wattage.In an example, its difference is 5K (Kelvin).
If be designed to 8 posts, since with basis that temperature that 6 posts are compared luminous tube 5 rises to some extent on use liquid mercury, therefore, if the shape of U-shaped pipe 2 is also identical with 6 posts (U-shaped pipe 2 top cross-section are circular), then can not form the cold spot that mercury air pressure is controlled to be appropriate value, can not obtain desirable luminous flux.
Therefore, people will study the shape that forms such U-shaped pipe 2 tops of cold spot at the top of U-shaped pipe 2.The top of U-shaped pipe 2 also is the part on discharge road.The temperature on discharge road is than the temperature height that is not the part on discharge road.Therefore, for example, as shown in Figure 4, the cross sectional shape of establishing U-shaped pipe top 2a is: have the 2b of fabric width portion and from the more and more thinner shape of head end of the 2b of fabric width portion to U-shaped pipe top 2a near the crotch of U-shaped pipe 2.Promptly, arrive near the thin more and chap crotch of U-shaped pipe 2 of head end more.Thus, near the 2b of fabric width portion the crotch of U-shaped pipe 2 becomes the discharge road.Owing to be not the discharge road near the head end, so temperature is lower than near the 2b of fabric width portion the crotch.
The shape of representing U-shaped pipe top 2a with concrete numerical value.As shown in Figure 3, the tube axial direction inside dimension L1 that establishes U-shaped pipe top 2a meets following formula:
11≤L1≤17 (unit [mm]) (1)
In addition, as shown in Figure 4, the tube axial direction of establishing the cephalic par of near the crotch of U-shaped pipe 2 2b of fabric width portion and U-shaped pipe top 2a is of a size of L2, and then L2 satisfies following formula:
L1-7≤L2≤L1-2 (unit [mm]) (2)
In addition, as shown in Figure 4, the tube axial direction of establishing the crotch of near the crotch of U-shaped pipe 2 2b of fabric width portion and U-shaped pipe 2a is of a size of L3, and then L3 satisfies following formula:
2≤L3≤7 (unit [mm]) (3)
By U-shaped pipe top 2a is designed to shape as described above, near the 2b of the fabric width portion periphery the crotch of U-shaped pipe 2 becomes the discharge road.Because the cephalic par of U-shaped pipe 2a is not the discharge road,, thereby form cold spot herein so temperature is lower than near the 2b of fabric width portion the crotch of U-shaped pipe 2.When temperature is 25 ℃ around, the cold-point temperature of optimum is 50 ℃ when lighting, but by U-shaped pipe top 2a being designed to shape as described above, the cephalic par of U-shaped pipe top 2a can be controlled at this temperature.
The compact fluorescent lamp 1 of 8 posts possesses 4 U-shaped pipes 2.All U-shaped pipes 2 can be designed to satisfy the shape of formula (1)～(3), also part U-shaped pipe 2 can be designed to satisfy the shape of formula (1)～(3). Make 1 or 2 U-shaped pipes 2 satisfy formula (1)～(3), and the short design of the tube axial direction inside dimension L1 that other U-shaped pipes 2 are its top is better on efficient.Below, this variation is described.
The 1st variation shown in Figure 5 is the example that the top is satisfied the tube axial direction inside dimension L1 at U-shaped pipe 20 and top of shape of formula (1)～(3) U-shaped pipe 21 combinations shorter than U-shaped pipe 20.U-shaped pipe 20 is identical with the length of the tube axial direction of U-shaped pipe 21.Can make at least 1 in 4 U-shaped pipes to be U-shaped pipe 20, other are U-shaped pipe 21.When being U-shaped pipe 20 for 2 in 4 U-shaped pipes, preferably with opposed mode configuring u pipe 20.This shape is fit to the situation that level is used compact fluorescent lamp 1.Because, seldom based on the variation of the cold-point temperature of the installation method of compact fluorescent lamp 1.
To under the mode of the tube axial direction inside dimension L1 of U-shaped pipe top 2a than the U-shaped pipe 20 of length and U-shaped pipe 21 combinations of weak point, how about discharge length and efficient change, and show an example here and describe.
(1) U-shaped pipe 20:L1=14mm, L2=8mm
(2) U-shaped pipe 21:L1=9mm, L2=4mm
(1) compact fluorescent lamp 1 that constitutes with 20,3 U-shaped pipes of 1 U-shaped pipe 21 is compared with the compact fluorescent lamp 1 that constitutes with 4 U-shaped pipes 20, and discharge is grown up in 24mm, and luminous efficiency has increased by 2%.
(2) compact fluorescent lamp 1 that constitutes with 20,2 U-shaped pipes of 2 U-shaped pipes 21 is compared with the compact fluorescent lamp 1 that constitutes with 4 U-shaped pipes 20, and discharge is grown up in 16mm, and luminous efficiency has increased by 1.5%.
In addition, with the compact fluorescent lamp 1 that 20,1 U-shaped pipe of 3 U-shaped pipes 21 constitutes, compare with above-mentioned (1), (2), discharge length and luminous efficiency obviously can reduce.
As mentioned above, we can say and use 1 U-shaped pipe 20, and best on compact fluorescent lamp 1 characteristic of other 3 use U-shaped pipes 21.
Variation shown in Figure 6 also is with the example of top for the tube axial direction inside dimension L1 at U-shaped pipe 20 and the top of the shape that satisfies formula (1)～(3) U-shaped pipe 22 combinations shorter than U-shaped pipe 20.Different with Fig. 5 is, U-shaped pipe 20 is different with the length of the tube axial direction of U-shaped pipe 22, but the crotch point of U-shaped pipe 20 is roughly the same.The situation of Fig. 6 also can be that at least 1 in 4 U-shaped pipes is U-shaped pipe 20, and other are U-shaped pipe 22.When being U-shaped pipe 20 for 2 in 4 U-shaped pipes, preferably with opposed mode configuring u pipe 20.This shape is fit to the situation that level is used compact fluorescent lamp 1.Because the installation method of compact fluorescent lamp 1 can not cause the variation of cold-point temperature.
Fig. 7 is the figure of expression execution mode 2, is near the figure of lamp holder baseline of expression compact fluorescent lamp 1.
Because luminous tube 5 is 8 posts, rise to some extent so compare the temperature of luminous tube 5 with the lamp of 6 posts of identical wattage.Therefore, the temperature of lamp holder 4 also rises.The material of lamp head shell 3 is PET etc., so if just the temperature of lamp holder 4 raise and can worsen.Therefore, study the scheme of the temperature that reduces lamp holder 4 in the present embodiment.
With the part of the temperature correlation of lamp holder 4 be filament 6 (Fig. 7) and U-shaped pipe 2 junction surface 2c (Fig. 7) to each other.As the discharge starting point filament 6 and as the discharge road U-shaped pipe 2 junction surface 2c to each other all become high temperature.Make filament 6 and U-shaped pipe 2 junction surface 2c to each other away from lamp holder 4, comparatively effective for the temperature that reduces lamp holder 4.But if over-separation, efficient can reduce because of the contraction in length on whole discharge road, and cold spot can change to lamp holder 4 sides and cold-point temperature will not be an Optimal Temperature also from U-shaped pipe top 2a, therefore will inevitably be limited.In addition, the 1st reason of cold spot being located at head end side rather than this lamp holder side is: the temperature of head end side descends easily, has cold spot in the head end side and more can prolong the discharge road on the whole.The 2nd reason is: be installed under the situation of ligthing paraphernalia, the variations in temperature of lamp holder side is bigger, different according to the difference of ligthing paraphernalia and atmosphere, and luminous fluxes etc. can great changes have taken place, and therefore will cold spot being located at the head end side is in order to reduce such variation.
As shown in Figure 7, if establishing the distance of filament 6 and lamp holder baseline and be the distance of Lf, junction surface 2c and lamp holder baseline is La, the temperature that makes lamp holder 4 so descend but the length on the road of discharging can not shorten and not worry cold spot from U-shaped pipe top 2a change to lamp holder 4 sides and cold-point temperature no longer to be Lf, the La of Optimal Temperature be:
11≤Lf≤17 (unit [mm]) (4)
Lf-19≤La≤Lf-13 (unit [mm]) (5)
Satisfy formula (4), (5) if set the position of filament 6 and U-shaped pipe 2 junction surface 2c to each other, then the temperature of lamp holder 4 descends, the length on discharge road can not shorten and need not to worry that cold spot changes to lamp holder 4 sides and cold-point temperature no longer is an Optimal Temperature from U-shaped pipe top 2a.
In present embodiment 2, make the head end side identical with execution mode 1.Identical by setting the head end side with execution mode 1, under the condition of execution mode 2, make cold spot be located at the head end side really, and the cold-point temperature of head end side is optimal conditions, the length on the road of discharging fully increases.But if can design the different felicity condition of cephalic par and execution mode 1, the condition that satisfies the execution mode 2 relevant with the lamp holder side so is effective.
Next embodiments of the present invention 3 are described.
Execution mode 3
Fig. 8～Figure 10 is the figure of expression execution mode 3, and Fig. 8 is the integrally-built figure of expression compact fluorescent lamp 101, and Fig. 9 is the vertical view of lamp head shell 103, and Figure 10 is the part longitudinal sectional view of U-shaped pipe 102.
As shown in Figure 8, compact fluorescent lamp 101 possesses: with 4 U-shaped pipes 102 (glass lamp) between the sidewall of end (junction surface 102a) each other fusion engage, thereby what formed by 8 glass lamps is the luminous tube 105 on 1 serpentine discharge road on inner body, having the par 103b that fixes this luminous tube 105 by bonding grade is the lamp head shell 103 of octagonal sidewall 103a with the cross section that links to each other with this par 103b, has the lamp holder 104 of the socket pin 104a that is embedded in this lamp head shell 103 and is electrically connected with the lead-in wire of luminous tube 105.
Though diagram not is provided with filament in 2 U-shaped pipes 102 as the both ends on discharge road.Be coated with electron radiation substance on the filament.Formed the discharge road between 2 filaments.
In addition, the material of lamp head shell 103 is PET (polyethylene terephthalate), LCP (liquid crystal polymer), PBT (polybutylene terepthatlate) etc.
As shown in Figure 9, lamp head shell 103 with par 103b that the end of sidewall 103a links to each other on be provided with 8 peristome 103c, these 8 peristome 103c are used for fixing by bonding grade the luminous tube 105 of 8 posts.
Another of sidewall 103a is open-ended, and the lamp holder 104 with socket pin 104a is embedded in herein.
Here, describe, but the present invention also is applicable to the compact fluorescent lamp that 8 posts such as 10 posts, 12 posts are above with the compact fluorescent lamp 101 of 8 posts.
The compact fluorescent lamp 101 of Fig. 8 is not for to use the type of amalgam, and imported liquid mercury in luminous tube 105.About using the lamp of amalgam, because of the influence of air-conditioning and extraneous air, the temperature of lamp can not rise sometimes, stagnates the state (being called supercooling) of the optimal value in far below the use amalgam time.In addition,, need the time till reaching its Optimal Temperature after lighting, the luminous flux problem slowly that rises so exist because the optimal value of amalgam is higher.Present embodiment is used to address these problems.
Have following severally as the method that in luminous tube, imports liquid mercury, but point out the method that mercury moves independently in course of action at least.
(1) directly pack into the method for highly purified liquid mercury.
(2) charge into Hg (mercury) with the form that impregnated among TiZn or the Fe, by lighting or heating, the mode that the framework of Hg and TiZn or Fe is moved independently.
Adopt the method for (2) in the present embodiment.
Used the mode of amalgam, except the temperature of adjusting amalgam, can also change mercury air pressure by the ratio of adjusting the element that constitutes amalgam.And then, because amalgam is fixed in pipe, perhaps be fixed in the lead-in wire of supporting filament, thereby the position can be fixed also.This situation is called " carrying out the restriction of mercury air pressure ".Relative therewith, imported under the situation of liquid mercury, light in the process and only determine mercury air pressure, and because liquid mercury activity, the position that temperature is minimum is free movable, so the position can not be fixed by temperature with the residual mercury of liquid state.This is called " not carrying out the restriction of mercury air pressure ".
4 the U-shaped pipes 102 that constitute luminous tube 105 are identical shaped.The external diameter of pipe of U-shaped pipe 102 is 10～15mm, and length (height of U-shaped) is 150～210mm, but is that example describes with 180mm at this.
If the length L of compact fluorescent lamp 101 is longer, vertical ceiling embedded type downlight may with interference in the ceiling.Therefore 210mm is made as the upper limit.In addition, if shorter, then luminous efficiency reduces.Therefore 150mm is made as lower limit.
If the external diameter of pipe of U-shaped pipe 2 is thinner, because efficient reduces, discharge voltage is too high, and the restriction in the design of converter is increased.Therefore, the external diameter of pipe of U-shaped pipe 102 with 10mm as lower limit.In addition, if the external diameter of pipe of U-shaped pipe 102 is thicker, the radial dimension of luminous tube 105 increases so, and it is difficult that the design of utensil becomes.Can go wrong aspect the cost of converter because electric current is also excessive.Therefore, the external diameter of pipe of U-shaped pipe 102 with 15mm as the upper limit.
Such as has been described, the length of 6 post compact fluorescent lamps of 70W in the past is 220mm.The length of 4 U-shaped pipes 102 that constitutes the luminous tube 105 of present embodiment is 180mm, has therefore approximately shortened 40mm by the length of U-shaped pipe 102 more as can be known.
Because luminous tube 105 is 8 posts, thereby the temperature of luminous tube 105 is compared rising to some extent with the lamp of 6 posts of identical wattage.In an example, its difference is 5K (Kelvin).If the temperature of luminous tube 105 rises, the temperature of then controlling the cold spot of mercury air pressure also rises, and therefore, total light flux reduces.In order to reduce this temperature of cold portion, in an example of present embodiment, the cross section that makes the top of glass tube is a wedge shape, and makes the coldest as far as possible away from the discharge road.And then, under the situation of ligthing paraphernalia of packing into, have further temperature and rise.This temperature rises can be different because of the kind and the design of ligthing paraphernalia, so general requirement is the little lamp of temperature rising.
In the present embodiment, as under the situation in utensil that the compact fluorescent lamp 101 of 8 posts is packed into, control follows the method for the decline of the total light flux that temperature rises, and is conceived to distance between the fluorescent tube of U-shaped pipe 102 and the distance between the U-shaped pipe 102.
As shown in figure 10, establishing distance between the fluorescent tube of U-shaped pipe 102 is that the distance of 102 of Lb, U-shaped pipe is Lc.
≤ Lb≤3 1.5 (unit [mm]) (11)
≤ Lc≤3 1.5 (unit [mm]) (12)
By setting above-mentioned condition, more active under the situation in the ligthing paraphernalia of packing into by the convection current between the fluorescent tube, thereby the temperature rising is little, efficient reduces less.And then, because the interval between this fluorescent tube is bigger, also easily leads to the outside so the light that sends to the inside holds, thereby improved efficient.Lb, Lc be during less than 1.5mm, and light is difficult to from penetrating and the total light flux step-down between the fluorescent tube, and convection current takes place hardly, can't see the effect that temperature is difficult to rise in the time of in the utensil of packing into.In addition, if Lb, Lc surpass 3mm, the processing at the junction surface that so oversize and U-shaped pipe is 102 also will be difficult to carry out.
As mentioned above, according to present embodiment, be 8 posts, and take to use under the situation of mode of liquid mercury, in the time of in being located at ligthing paraphernalia, can solve the rise problem of the decrease in efficiency that causes of temperature as follows for luminous tube 105.Promptly, make the distance L c of 102 of distance L b, U-shaped pipes between the fluorescent tube of U-shaped pipe 102 satisfy following formula, thereby can obtain high luminous luminous flux.
≤ Lb≤3 1.5 (unit [mm]) (11)
≤ Lc≤3 1.5 (unit [mm]) (12)
Figure 11 is the figure of expression execution mode 4, is the vertical view of lamp head shell 103.
As shown in Embodiment 3, if the distance L c of 102 of the distance L b between the fluorescent tube of U-shaped pipe 102, U-shaped pipe is bigger than in the past, then luminous tube 105 increases.For example: if on the lighting device of the compact fluorescent lamp 101 that uses 6 posts, use the compact fluorescent lamp 101 of 8 such posts of execution mode 3, have following problems: the lampshade portion of lighting device and the space between the compact fluorescent lamp 101 narrow down, thereby the convection current in the lampshade portion worsens, and the temperature of compact fluorescent lamp 101 rises and the total light flux step-down.
Therefore, in the present embodiment, the radial dimension of lamp holder 104 is dwindled in research, increases the lampshade portion of lighting device and the space between the compact fluorescent lamp 101, thereby improves the scheme of the convection current in the lampshade portion.
Figure 11 is the vertical view of lamp head shell 103, and the profile of lamp head shell 103 is an octagon.And, be provided with peristome 103c opposed to each other on octagonal each summit.In addition, this octagon is with the angle chamfering of apex portion and form fillet.Imagine a circumscribed circle, will be defined as the summit, the part that connects adjacent vertex is defined as the limit with the tangent part of this circle.Be positioned at inboard summary octagon if obviously separate with this circumscribed circle on this each limit, then regard octagon as.At first symbol is defined.
D: the diameter of fluorescent tube
D: the circumscribed diameter of lamp head shell 103
S: the octagonal summit of lamp head shell 103 and the distance between the peristome 103c
P: the distance of the mid point on the circumcircle of lamp head shell 103 and an octagonal limit
Make s and p satisfy following formula:
3≤s≤6 (unit [mm]) (13)
1≤p (unit [mm]) (14)
The size of luminous tube 105, by the distance L b between the fluorescent tube of the diameter d of fluorescent tube, U-shaped pipe 102, distance L c decision between the U-shaped pipe 102, therefore, between octagonal summit by establishing lamp head shell 103 and the peristome 103c apart from the mid point on the circumcircle of s, lamp head shell 103 and an octagonal limit satisfy formula (13), (14) apart from p, can dwindle the diameter of lamp head shell 103.
According to such formation, the radial dimension of lamp holder 104 be can dwindle and the lampshade portion of lighting device and the space between the compact fluorescent lamp 101 increased, thereby improve the convection current in the lampshade portion, the temperature that can suppress compact fluorescent lamp 101 rises, and improves total light flux.Usually, fluorescent tube is when 2 become 6 left and right sides, and the shape of lamp head shell is not a polygon prism cylindrical but that match with the arrangement of this fluorescent tube.Its reason is: it more can cut down the material of lamp head shell, and is not only highly beneficial on weight and cost, and seems better appearance, and design is also satisfactory.If surpass 8 posts, both made lamp holder had been designed to polygon, the reduction effect on the material is also less, nor can be little of seeming degree attractive in appearance.On the contrary, be designed to cylindrically, but have the injection mould that is easy to manufactured materials etc. and reduce dysgenic advantage, and also the someone thinks that to use slick and sly fillet more excellent in design.For this reason, people have studied columniform lamp holder.On the other hand, as with the lamp holder of ligthing paraphernalia near the cross section of the vertical face of axle, almost need not be designed to the polygon that matches with the lamp holder of lamp, in fact most of situation be a circle.In this embodiment, corresponding with the cross sectional shape of the circle of this ligthing paraphernalia, be conceived to the space between the cross section of the lamp head shell of lamp and ligthing paraphernalia, be designed to polygon by cross sectional shape with lamp head shell, increase the space, thereby increase convection current.
As mentioned above, according to present embodiment, make and satisfy 3≤s≤6 (unit [mm]) apart from s between the octagonal summit of lamp head shell 103 and the peristome 103c, make the circumcircle of lamp head shell 103 and an octagonal limit the center satisfy 1≤p (unit [mm]) apart from p, thus, the radial dimension of lamp holder 104 reduces, the lampshade portion of lighting device and the space between the compact fluorescent lamp 101 increase, thereby can improve the convection current in the lampshade portion, the temperature that can suppress compact fluorescent lamp 101 rises, and improves luminous flux.
In addition, though shown octagonal lamp head shell, the profile of lamp head shell 103 can be arbitrary polygon.
Claims (7)
1. compact fluorescent lamp, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and does not carry out the restriction of mercury air pressure, it is characterized in that,
The cross section at least 1 top in the above-mentioned U-shaped pipe is for having fabric width portion and from this fabric width portion to the more and more thinner shape of the cephalic par at above-mentioned top near the crotch of above-mentioned U-shaped pipe,
The tube axial direction inside dimension L1 at above-mentioned top is satisfied
11≤L1≤17 (unit [mm]) (1),
Make near the fabric width portion the crotch of above-mentioned U-shaped pipe satisfied with the size L2 of the tube axial direction of the cephalic par at above-mentioned top
L1-7≤L2≤L1-2 (unit [mm]) (2).
2. compact fluorescent lamp according to claim 1 is characterized in that, makes the same length of the tube axial direction of above-mentioned all U-shaped pipe.
3. compact fluorescent lamp according to claim 1 is characterized in that, the position of the crotch of above-mentioned all U-shaped pipe is roughly the same.
4. according to claim 2 or 3 described compact fluorescent lamps, it is characterized in that the shape of opposed above-mentioned U-shaped pipe is identical.
5. compact fluorescent lamp, wherein the luminous tube that constitutes of U-shaped pipe is that 8 posts are above and enclosed liquid mercury, it is characterized in that,
The distance of filament and lamp holder baseline be Lf, above-mentioned U-shaped pipe to each other the junction surface and the distance of lamp holder baseline be La, this Lf, La satisfy so:
11≤Lf≤17 (unit [mm]) (4),
Lf-19≤La≤Lf-13 (unit [mm]) (5).
6. compact fluorescent lamp, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and does not carry out the restriction of mercury air pressure, it is characterized in that,
Distance L c between the distance L b between the fluorescent tube of above-mentioned U-shaped pipe, above-mentioned U-shaped pipe satisfies:
≤ Lb≤3 1.5 (unit [mm]) (11),
≤ Lc≤3 1.5 (unit [mm]) (12).
7. compact fluorescent lamp, wherein the luminous tube that constitutes of U-shaped pipe is 8 more than the post, and does not carry out mercury air pressure, it is characterized in that,
Possesses polygonal lamp head shell, this lamp head shell has opposed and keep the peristome of above-mentioned luminous tube with polygonal summit, the satisfying apart from p apart from the mid point on the circumcircle of s, above-mentioned lamp head shell and an above-mentioned polygonal limit of the polygonal summit of above-mentioned lamp head shell and above-mentioned peristome:
3≤s≤6 (unit [mm]) (13),
1≤p (unit [mm]) (14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007049082A JP2008210759A (en) | 2007-02-28 | 2007-02-28 | Compact fluorescent lamp |
| JP048672/2007 | 2007-02-28 | ||
| JP049082/2007 | 2007-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101606223A true CN101606223A (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200880004332XA Pending CN101606223A (en) | 2007-02-28 | 2008-02-26 | Compact fluorescent lamp |
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| Country | Link |
|---|---|
| JP (1) | JP2008210759A (en) |
| CN (1) | CN101606223A (en) |
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2007
- 2007-02-28 JP JP2007049082A patent/JP2008210759A/en active Pending
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2008
- 2008-02-26 CN CNA200880004332XA patent/CN101606223A/en active Pending
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| JP2008210759A (en) | 2008-09-11 |
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Open date: 20091216 |