NL2017507B1 - Discharge lamp - Google Patents
Discharge lamp Download PDFInfo
- Publication number
- NL2017507B1 NL2017507B1 NL2017507A NL2017507A NL2017507B1 NL 2017507 B1 NL2017507 B1 NL 2017507B1 NL 2017507 A NL2017507 A NL 2017507A NL 2017507 A NL2017507 A NL 2017507A NL 2017507 B1 NL2017507 B1 NL 2017507B1
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- Prior art keywords
- discharge lamp
- burner
- antenna
- contact
- electrodes
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
- H01J61/544—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch and an auxiliary electrode outside the vessel
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- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
OctrooicentrumPatent center
NederlandThe Netherlands
(21) Aanvraagnummer: 2017507 © Aanvraag ingediend: 21/09/2016(21) Application number: 2017507 © Application submitted: 21/09/2016
Θ 2017507Θ 2017507
BI OCTROOI @ Int. CL:BI PATENT @ Int. CL:
H01J 61/34 (2017.01) H01J 61/54 (2017.01)H01J 61/34 (2017.01) H01J 61/54 (2017.01)
(54) DISCHARGE LAMP (57) The present disclosure relates to a discharge lamp. The discharge lamp comprises an envelope, a closed off burner in the envelope defining a gas filled chamber, and electrodes extending through the envelope and into the gas filled chamber of the burner. Further, an antenna is arranged on a surface of the burner, extending in a longitudinal direction of the burner. Also a connector having a temperature dependent resistance or capacity is arranged between the antenna and at least one of the electrodes.(54) DISCHARGE LAMP (57) The present disclosure relates to a discharge lamp. The discharge lamp comprises an envelope, a closed off burner in the envelope defining a gas filled chamber, and electrodes extending through the envelope and into the gas filled chamber of the burner. Further, an antenna is arranged on a surface of the burner, extending in a longitudinal direction of the burner. Also a connector having a temperature dependent resistance or capacity is arranged between the antenna and at least one of the electrodes.
NL BI 2017507NL BI 2017507
Dit octrooi is verleend ongeacht het bijgevoegde resultaat van het onderzoek naar de stand van de techniek en schriftelijke opinie. Het octrooischrift komt overeen met de oorspronkelijk ingediende stukken.This patent has been granted regardless of the attached result of the research into the state of the art and written opinion. The patent corresponds to the documents originally submitted.
DISCHARGE LAMPDISCHARGE LAMP
The present disclosure relates to a discharge lamp. The discharge lamp comprises of an envelope, a closed off burner in the envelope defining a gas filled chamber, and electrodes extending through the envelope and into the gas filled chamber of the burner.The present disclosure relates to a discharge lamp. The discharge lamp comprises of an envelope, a closed off burner in the envelope defining a gas filled chamber, and electrodes extending through the envelope and into the gas filled chamber of the burner.
The envelope may be glass or quartz glass or any alternative and suitable material.The envelope may be glass or quartz glass or any alternative and suitable material.
The burner may be a closed-off cylindrical element made of polycrystalline alumina PCA, but may have any alternative shape or form and be made of any alternative and suitable material.The burner may be a closed-off cylindrical element made of polycrystalline alumina PCA, but may have an alternative shape or form and be made or any alternative and suitable material.
Further, an antenna is arranged on a surface of the burner, extending in a longitudinal direction of the burner. The antenna may be made of tungsten (W), but may be made of any alternative and suitable material.Further, an antenna is arranged on a surface of the burner, extending in a longitudinal direction of the burner. The antenna may be made or tungsten (W), but may be made or any alternative and suitable material.
Such an antenna defines an improvement in relation to starting operation of the lamp. In particular, the antenna enables a lower ignition pulse to be used during starting operation of the discharge lamp, and/or enables increased filling gas pressure in the burner.Such an antenna defines an improvement in relation to starting operation of the lamp. In particular, the antenna allows a lower ignition pulse to be used during the starting operation of the discharge lamp, and / or allows increased filling gas pressure in the burner.
In the eyes of many users, discharge lamps were expected to be obsolete by the fifing date of the present disclosure, in view of alternative fight sources, that have entered the market in the last years, like LED lighting.In the eyes of many users, discharge lamps were expected to be obsolete by the fifty date of the present disclosure, in view of alternative fight sources, that have entered the market in the last years, like LED lighting.
However, in agricultural applications and in particular when lighting greenhouses and/or the like, heat from the traditional discharge lamps was functional to reduce the need for heating using a central heating system. When migrating to LED lighting or the like, any resulting energy savings evaporated in view of a need for more heating from a central heating system and the associated use of more gas or other fuel, which can be environmentally detrimental. After many studies, tests and practical implementations of other more modern fight sources, in particular but not exclusively, the technical field of agriculture began reverting to traditional lighting, for example gas discharge lamps, such as high-pressure discharge lamps (HID), such as high-pressure sodium (HPS) vapor discharge lamps, and more in particular HID or HPS vapor discharge lamps having an integrated ignition antenna (IA or antenna). This reversal to traditional lighting has initiated new developments to achieve higher fight output in operation from higher gas pressures in the burner, whilst simultaneously trying to reduce required start-up or ignition pulses, to protect fixture components, like starters and ballasts, and the like, to which end the antenna provides an outcome.However, in agricultural applications and in particular when lighting greenhouses and / or the like, heat from the traditional discharge lamps was functional to reduce the need for heating using a central heating system. When migrating to LED lighting or the like, any resulting energy savings evaporated in view of a need for more heating from a central heating system and the associated use of more gas or other fuel, which can be environmentally detrimental. After many studies, tests and practical implementations or other more modern fight sources, in particular but not exclusively, the technical field of agriculture, reverting to traditional lighting, for example gas discharge lamps, such as high-pressure discharge lamps (HID), such as high-pressure sodium (HPS) vapor discharge lamps, and more in particular HID or HPS vapor discharge lamps having an integrated ignition antenna (IA or antenna). This reversal to traditional lighting has initiated new developments to achieve higher fight output in operation from higher gas pressures in the burner, while simultaneously trying to reduce required start-up or ignition pulses, to protect fixture components, like starters and ballasts, and the like , to which end the antenna provides an outcome.
With regard to the antenna three conventional types are known, namely active, passive and hybrid antennas. The active antenna is electrically connected to an electrode of the discharge lamp. The passive antenna is not electrically connected to an electrode and therefore electrically floats relative to one or more electrodes of the discharge lamp. A hybrid antenna is an antenna which is resistively or capacitivily connected to one of the electrodes of the discharge lamp.With regard to the antenna three conventional types are known, namely active, passive and hybrid antennas. The active antenna is electrically connected to an electrode or the discharge lamp. The passive antenna is not electrically connected to an electrode and therefore electrically floats relative to one or more electrodes or the discharge lamp. A hybrid antenna is an antenna which is resistively or capacitively connected to one of the electrodes of the discharge lamp.
For optimum performance of the discharge lamp, the antenna needs to be “active” during ignition of the lamp and needs to be “passive” during normal operation after ignition.For optimum performance of the discharge lamp, the antenna needs to be "active" during ignition or the lamp and needs to be "passive" during normal operation after ignition.
To this end the present disclosure further suggests deployment of a connector with a temperature dependent electrical resistance or capacity arranged between the antenna and at least one of the electrodes. In such a way that when the lamp is at a, close to, environmental temperature, the connector enables an electrical conductive connection, whereas when the temperature of the burner during and after ignition thereof increases, the connector will heat up, enabling the antenna to be electrically isolated from the at least one of the electrodes reliably, automatically and elegantly, potentially even mechanically without having to resort to complex, unreliable and costly provisions, that may have detrimental effects on the life of the lamp or the like.To this end the present disclosure further suggested deployment of a connector with a temperature dependent electrical resistance or capacity arranged between the antenna and at least one of the electrodes. In such a way that when the lamp is at a, close to, environmental temperature, the connector enabling an electrical conductive connection, whereas the temperature of the burner during and after ignition increased, the connector will heat up, enabling the antenna to be electrically isolated from the least one of the electrodes reliably, automatically and elegantly, potentially even mechanically without having to resort to complex, unreliable and costly provisions, that may have detrimental effects on the life of the lamp or the like.
Merely by way of example, electrical conductive connection may be a connection with a resistance of less than 200 ohm, and electrically isolated may be a connection with a resistance of more than 1000 ohm. However, other values may be employed without stepping outside the bounds of the scope of the present disclosure.Merely by way of example, electrical conductive connection may be a connection with a resistance of less than 200 ohms, and electrically isolated may be a connection with a resistance of more than 1000 ohms. However, other values may be employed without stepping outside the bounds of the scope of the present disclosure.
The present disclosure introduces a new type of hybrid antenna, being referred to herein as a “thermal switching” hybrid antenna.The present disclosure introduces a new type of hybrid antenna, being referred to as a "thermal switching" hybrid antenna.
There are many preferred embodiments within the scope of the present disclosure. Some of such preferred embodiments will be discussed herein below with reference to the appended drawing, relating to such preferred embodiments, and/or are defined in the appended dependent claims. Nevertheless, no features of the preferred embodiments in the below embodiment description or in the appended dependent claims are to be construed as limiting on the scope of the present disclosure, because the scope of the present disclosure is defined only by the appended independent claim to include obvious alternatives and the like.There are many preferred options within the scope of the present disclosure. Some of such preferred claims will be discussed below with reference to the appended drawing, related to such preferred account, and / or are defined in the appended dependent claims. Nevertheless, no features of the preferred exponent in the below expended description or in the appended dependent claims are to be constructed as limiting on the scope of the present disclosure, because the scope of the present disclosure is defined only by the appended independent claim to include obvious alternatives and the like.
In a preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a contact strip of two or more layers of material having mutually different thermal expansion or contraction coefficients, such as a bi-metal strip, and a counter contact, where the contact strip at a lower temperature at ignition of the lamp contacts the counter contact to electrically connect the at least one of the electrodes and the antenna, and is configured to deflect from the counter contact at higher temperatures occurring after a period of burning to electrically disconnect the at least one of the electrodes and the antenna.In a preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a contact strip or two or more layers of material having mutually different thermal expansion or contraction coefficients, such as a bi-metal strip, and a counter contact, where the contact strip at a lower temperature at ignition of the lamp contact the counter contact at electrically connect the at least one of the electrodes and the antenna, and is configured to deflect from the counter contact at higher temperatures occurring after a period of burning to electrically disconnect the least one of the electrodes and the antenna.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a contact and a counter contact pressed together by spring having a temperature dependent spring constant and configured to electrically connect the at least one of the electrodes and the antenna at a lower temperature at ignition of the lamp, and is configured to electrically disconnect the at least one of the electrodes and the antenna at higher temperatures occurring after a period of burning.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a contact and a counter contact pressed together by spring having a temperature dependent spring constant and configured to electrically connect the at least one of the electrodes and the antenna at a lower temperature at ignition of the lamp, and is configured to electrically disconnect the at least one of the electrodes and the antenna at higher temperatures occurring after a period of burning.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the burner is cylindrical and the antenna is extended to be arranged on an end face of the burner, further comprising a contact disk facing the end face of the burner. In an embodiment with a contact disk the discharge lamp may exhibit a further feature that the contact disk is spring loaded towards the end face of the burner, wherein preferably a spring element to spring load the contact disk towards the end face of the burner has a temperature dependent spring constant. In an embodiment with a contact disk the discharge lamp may exhibit a additionally to or alternatively for the spring loaded disk a feature that the contact disk comprises electrically conductive material, wherein the contact disk preferably comprises a coating of a dielectric material.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the burner is cylindrical and the antenna is extended to be arranged on an end face of the burner, further including a contact disk facing the end face of the burner. In an embodiment with a contact disk the discharge lamp may exhibit a further feature that the contact disk is spring loaded towards the end face of the burner, preferably a spring element to spring load the contact disk towards the end face of the burner has a temperature dependent spring constant. In an embodiment with a contact disc the discharge lamp may exhibit an additionally or alternatively for the spring loaded disc a feature that the contact disc comprises electrically conductive material, the contact disc preferably comprises a coating or a dielectric material.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a coupling embedding therein separated conductor ends of conductors connected respectively to the one of the electrodes and the antenna, wherein the coupling preferably comprises a temperature dependent resistor of PTC or NTC material. In a warm operational state of the lamp, resistance is to be high and preferably approximate infinite. During start up, the resistance is low, to allow the antenna to perform its (active state) task.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector comprises a coupling embedding therein separated conductor ends of conductors connected respectively to the one of the electrodes and the antenna, the coupling preferably comprises a temperature dependent resistor or PTC or NTC material. In a warm operational state of the lamp, resistance is to be high and preferably approximate infinite. During start up, the resistance is low, to allow the antenna to perform its (active state) task.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector is electrically connected with a compressible strain relief conductor portion of the at least one of the electrodes.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the connector is electrically connected with a compressible strain relief conductor portion of the least one of the electrodes.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the antenna comprises tungsten.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the antenna comprises tungsten.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the antenna is arranged on an outer surface of the burner.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the antenna is arranged on an outer surface of the burner.
In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the chamber contains a gas mixture comprising at least a buffer gas, selected from a group containing at least Neon, Xenon, Argon, and Krypton.In an additional or alternative preferred embodiment, a discharge lamp according to the present disclosure exhibits the feature that the chamber contains a gas mixture containing at least a buffer gas, selected from a group containing at least Neon, Xenon, Argon, and Krypton.
Preferably a fischarge lamp according to the present disclosure is a 1000W HPS lamp.A preferred Fischarge lamp according to the present disclosure is a 1000W HPS lamp.
Preferably a discharge lamp according to the present disclosure is configured to be mounted in an agricultural lamp armature.Preferably a discharge lamp according to the present disclosure is configured to be mounted in an agricultural lamp fixture.
Based on the above summary of function, features, elements, components, aspects and parts of the discharge lamp according to the present disclosure in terms of the appended claims, herein below an embodiment description is provided with reference to the appended drawing of preferred embodiments. In the drawing the same or similar aspects, elements, components and features can be designated by the same reference signs, even when referring to distinct embodiments, wherein:Based on the above summary of function, features, elements, components, aspects and parts of the discharge lamp according to the present disclosure in terms of the appended claims, below an edition description is provided with reference to the appended drawing or preferred expander. In the drawing the same or similar aspects, elements, components and features can be designated by the same reference signs, even when referring to distinct,
Figure 1 shows a schematic perspective view of a discharge lamp according to the present disclosure;Figure 1 shows a schematic perspective view of a discharge lamp according to the present disclosure;
Figure 2 shows a detail of figure 1 in a first embodiment;Figure 2 shows a detail of Figure 1 in a first embodiment;
Figure 3 shows a detail of figure 1 in a second embodiment;Figure 3 shows a detail of Figure 1 in a second embodiment;
Figure 4 shows a detail of figure 1 in a third embodiment; andFigure 4 shows a detail of Figure 1 in a third embodiment; and
Figure 5 shows a detail of a bi-metal configuration in figure 2.Figure 5 shows a detail or a bi-metal configuration in Figure 2.
Figure 1 shows a general discharge lamp 1, without particular detail of features based on which the present disclosure distinguishes itself. The general discharge lamp 1 comprising a closed glass envelope 2 and a closed off burner 3 in the envelope 2 defining a gas filled chamber 4. The burner comprises for instance an Aluminium-Oxide tube, closed off at the ends thereof by a bus 7 sealed with glass frit 8. Electrodes 5 extend through the envelope 2 and into the gas filled chamber 4 of the burner 3, through the bus 7 or a connector of the electrode extends through the bus 7 (as in the below described embodiments). An antenna 6 is arranged on an inner or outer surface of the burner 3 and extends in a longitudinal direction of burner 3.Figure 1 shows a general discharge lamp 1, without particular detail or features based on which the present disclosure distinguishes itself. The general discharge lamp 1 including a closed glass envelope 2 and a closed off burner 3 in the envelope 2 defining a gas filled chamber 4. The burner comprises for instance of an Aluminum-Oxide tube, closed off at the ends thereof by a bus 7 sealed with glass frit 8. Electrodes 5 extend through the envelope 2 and into the gas filled chamber 4 of the burner 3, through the bus 7 or a connector of the electrode extends through the bus 7 (as described below). An antenna 6 is arranged on an inner or outer surface of the burner 3 and extends in a longitudinal direction or burner 3.
Holders 9 keep burner 3 in place in the envelope 2. Strain relief curls 10 are arranged in the electrodes 5 to allow for thermal expansion.Holders 9 keep burner 3 in place in the envelope 2. Strain relief curls 10 are arranged in the electrodes 5 to allow for thermal expansion.
Further, in the below described preferred embodiments, several possible realizations are disclosed of a temperature dependent connector 11 (not shown in figure 1) arranged between the antenna 6 and at least one of the electrodes 5.Further, described in the below preferred preferred, several possible realizations are disclosed of a temperature dependent connector 11 (not shown in figure 1) arranged between the antenna 6 and at least one of the electrodes 5.
Antenna 6 comprises a tungsten strip on the outer surface of burner 3, but could be made of another material. The chamber of the burner contains a gas mixture comprising at least a buffer gas, selected from a group containing at least Neon, Xenon, Argon, and Krypton.Other gasses are equally useable.Antenna 6 comprises a strip strip on the outer surface of burner 3, but could be made of another material. The chamber of the burner contains a gas mixture containing at least a buffer gas, selected from a group containing at least Neon, Xenon, Argon, and Krypton. Other gasses are equally useable.
In figures 2 - 4, a closed and sealed and electrically conducting electrode bus 14 is arranged in the through hole of the bus 7, from where the electrode extends into the chamber 4 of burner 3. For the sake of simplicity of the description, electrodes 5 inside and outside the burner 3 are designated with the same reference.In figures 2 - 4, a closed and sealed and electrically conducting electrode bus 14 is arranged in the through hole of the bus 7, from where the electrode extends into the chamber 4 or burner 3. For the sake of simplicity of the description, electrodes 5 inside and outside the burner 3 are designated with the same reference.
Antenna 6 extends longitudinally over an outer surface of burner 3, and at an end thereof antenna 6 is also arranged under a connector ring 12, from which a conductor 13 leads to temperature dependent connector 11. At a side opposite conductor 13, temperature dependent connector 11 is electrically connected to strain relief curl 10 of electrode 5 at connection 22.Antenna 6 extends longitudinally over an outer surface of burner 3, and at an end thereof antenna 6 is also arranged under a connector ring 12, from which a conductor 13 leads to temperature dependent connector 11. At a side opposite conductor 13, temperature dependent connector 11 is electrically connected to strain relief curl 10 or electrode 5 at connection 22.
The connector 11 comprises, in the embodiment of figure 2 and as shown in more detail in figure 5, a bimetal configuration 15 comprising a cantilevered contact strip 16 of two layers of material having mutually different thermal expansion or contraction coefficients and a contact 17 thereon. Bi-metal strip 16 could be a tri-metal configuration, of any alternative structure. The main issue is that the strip is cantilevered at a temperature dependent angle to contact a counter contact 18, when the contact strip is at a lower temperature, for example at ignition of the lamp. At this low temperature contact 17 of the cantilevered strip 16 contacts the counter contact 18 to electrically connect the strain relief curl 10 of electrode 5 and the antenna 6. Further, the strip 16 is configured to deflect and distance contact 17 from counter contact 18 at higher temperatures occurring after a period of burning to electrically disconnect strain relief curl 10 of the electrode 5 and antenna 6.The connector 11 comprises, in the embodiment of figure 2 and as shown in more detail in figure 5, a bimetal configuration 15 including a cantilevered contact strip 16 or two layers of material having mutually different thermal expansion or contraction coefficients and a contact 17 thereon. Bi-metal strip 16 could be a tri-metal configuration, or any alternative structure. The main issue is that the strip is cantilevered at a temperature dependent angle to contact a counter contact 18, when the contact strip is at a lower temperature, for example at ignition of the lamp. At this low temperature contact 17 of the cantilevered strip 16 contacts the counter contact 18 to electrically connect the strain relief curl 10 or electrode 5 and the antenna 6. Further, the strip 16 is configured to deflect and distance contact 17 from counter contact 18 at higher temperatures occurring after a period of burning to electrically disconnect strain relief curl 10 of the electrode 5 and antenna 6.
In alternative embodiments, the connector 11 comprises a contact and a counter contact pressed together by a spring having a temperature dependent spring constant and configured to electrically connect the electrode and the antenna at a lower temperature at ignition of the lamp, and configured to electrically disconnect the electrode and the antenna at higher temperatures occurring after a period of burning.In alternative variant, the connector 11 comprises a contact and a counter contact pressed together by a spring having a temperature dependent spring constantly and configured to electrically connect the electrode and the antenna at a lower temperature at ignition of the lamp, and configured to electrically disconnect the electrode and the antenna at higher temperatures occurring after a period of burning.
In the embodiment of figure 3, the burner 3 is cylindrical and the antenna 6 is extended to be arranged on an end face 19 of burner 3. The lamp further comprises a contact disk 20 facing end face 19 of the burner 3 with a coating side of the contact disk 20, covered by a dielectric coatingIn the embodiment of figure 3, the burner 3 is cylindrical and the antenna 6 is extended to be arranged on an end face 19 or burner 3. The lamp further comprises a contact disk 20 facing end face 19 or the burner 3 with a coating side or the contact disk 20, covered by a dielectric coating
21. Here, contact disk 20 is spring loaded towards end face 19 of burner 3, in that a flexible conductor 23 extending between electrically conducting electrode bus 14 and contact disk 20 for contact between the electrically conducting electrode bus 14 and the contact disk 20 at lower temperatures. When temperatures at burner 2 rise, conductor 23 loses pressing force and contact disk 20 is allowed to distance from the portion of antenna 6 extending over end face 19 of burner 3.21. Here, contact disk 20 is spring loaded towards end face 19 or burner 3, in that a flexible conductor 23 extending between electrically conducting electrode bus 14 and contact disk 20 for contact between the electrically conducting electrode bus 14 and the contact disk 20 at lower temperatures. When temperatures at burner 2 rise, conductor 23 loses pressing force and contact disk 20 is allowed to distance from the portion of antenna 6 extending over end face 19 or burner 3.
Consequently, conductor 23 forms a spring element to spring load the contact disk 20 towards the end face 19 of the burner 3 in that it exhibits a temperature dependent spring constant to allow the disk to withdraw from the end face 19 of the burner 3 at an elevated operational temperature. At start-up of the burner a higher operational frequency is employed.Returns, conductor 23 forms a spring element to spring load the contact disk 20 towards the end face 19 of the burner 3 in that it exhibits a temperature dependent spring constant to allow the disk to withdraw from the end face 19 of the burner 3 at an elevated operational temperature. At start-up or the burner a higher operational frequency is employed.
The contact disk 20 comprises electrically conductive material, and the contact disk comprises coating 21 of a dielectric material. Even if distancing of contact disk 20 relative to the end face of the burner based on the temperature dependent spring force leaves wanting, then the capacitive coupling will effectively form a disconnection at the lower operating frequency of the discharge lamp in the operational state of the lamp (after start-up).The contact disk 20 comprises electrically conductive material, and the contact disk comprises coating 21 or a dielectric material. Even if distancing or contact disk 20 relative to the end of the burner based on the temperature dependent spring force leaves wanting, then the capacitive coupling will effectively form a disconnection at the lower operating frequency of the discharge lamp in the operational state of the lamp (after start-up).
In the embodiment of figure 4, connector 11 comprises a coupling 24 embedding therein separated conductor ends of conductors 13, 23 connected respectively to electrode 5 via electrically conducting electrode bus 14 and antenna 6. Although conductor 25 may seem comparable with conductor 23 in figure 3, it does not have a flexible or resilient function to press contacts together.In the embodiment of figure 4, connector 11 comprises a coupling 24 embedding therein separated conductor ends of conductors 13, 23 connected respectively to electrode 5 via electrically conducting electrode bus 14 and antenna 6. Although conductor 25 may seem comparable with conductor 23 in figure 3 , it does not have a flexible or resilient function to press contacts together.
Coupling 24 comprises a temperature dependent resistor of PTC or NTC material, depending on the desired functionality of disconnecting the antenna from the electrode at higher temperatures, whilst connecting these elements at lower temperatures to facilitate ignition and allow at least the conventional but preferably higher gas pressures against at most the same and preferably lower ignition pulses.Coupling 24 comprises a temperature dependent resistor or PTC or NTC material, depending on the desired functionality or disconnecting the antenna from the electrode at higher temperatures, while connecting these elements at lower temperatures to facilitate ignition and allow at least the conventional but preferably higher gas pressures against at most the same and preferably lower ignition pulses.
Above embodiments of the present disclosure are provided, but the scope of protection is 5 exclusively determined on the basis of the appended independent claim, which scope even encompasses alternatives for features defined therein. The dependent claims and the embodiment description relate merely to preferred embodiments, without any limitation on the scope of protection resulting from said preferred embodiments and dependent claims.The above scope of the present disclosure is provided, but the scope of protection is 5 exclusively determined on the basis of the appended independent claim, which scope equally and compasses alternatives for features defined therein. The dependent claims and the embodiment description relate merely to preferred, without any limitation on the scope of protection resulting from said preferred and dependent claims.
Claims (16)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2017507A NL2017507B1 (en) | 2016-09-21 | 2016-09-21 | Discharge lamp |
| PCT/NL2017/050631 WO2018056818A2 (en) | 2016-09-21 | 2017-09-21 | Discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2017507A NL2017507B1 (en) | 2016-09-21 | 2016-09-21 | Discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2017507B1 true NL2017507B1 (en) | 2018-03-29 |
Family
ID=57629634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2017507A NL2017507B1 (en) | 2016-09-21 | 2016-09-21 | Discharge lamp |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL2017507B1 (en) |
| WO (1) | WO2018056818A2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3610983A (en) * | 1968-08-21 | 1971-10-05 | Patent Trevhand Ges Fur Elektr | Restarting arrangement for high-pressure mercury-vapor lamp which includes metallic halide additives |
| US5079479A (en) * | 1990-04-27 | 1992-01-07 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh | Dual-envelope high-pressure discharge lamp with thermostatically controlled starting strip |
| US5355053A (en) * | 1992-11-24 | 1994-10-11 | Osram Sylvania Inc. | High pressure sodium lamp starting aid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS587029B2 (en) * | 1979-06-18 | 1983-02-08 | 株式会社日立製作所 | high pressure metal vapor discharge lamp |
| US4780649A (en) * | 1984-08-24 | 1988-10-25 | Gte Products Corporation | Metal vapor lamp having low starting voltage |
| JP5578526B2 (en) | 2008-07-10 | 2014-08-27 | コーニンクレッカ フィリップス エヌ ヴェ | High pressure sodium discharge lamp with hybrid antenna |
-
2016
- 2016-09-21 NL NL2017507A patent/NL2017507B1/en not_active IP Right Cessation
-
2017
- 2017-09-21 WO PCT/NL2017/050631 patent/WO2018056818A2/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3610983A (en) * | 1968-08-21 | 1971-10-05 | Patent Trevhand Ges Fur Elektr | Restarting arrangement for high-pressure mercury-vapor lamp which includes metallic halide additives |
| US5079479A (en) * | 1990-04-27 | 1992-01-07 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh | Dual-envelope high-pressure discharge lamp with thermostatically controlled starting strip |
| US5355053A (en) * | 1992-11-24 | 1994-10-11 | Osram Sylvania Inc. | High pressure sodium lamp starting aid |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018056818A2 (en) | 2018-03-29 |
| WO2018056818A3 (en) | 2018-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Lapsed because of non-payment of the annual fee |
Effective date: 20221001 |